minimize more

## Summary

Fixes #20774 by tracking whether an `InterpolatedStringState` element is
nested inside of another interpolated element. This feels like kind of a
naive fix, so I'm welcome to other ideas. But it resolves the problem in
the issue and clears up the syntax error in the black compatibility
test, without affecting many other cases.

The other affected case is actually interesting too because the
[input](96b156303b/crates/ruff_python_formatter/resources/test/fixtures/ruff/expression/fstring.py (L707))
is invalid, but the previous quote selection fixed the invalid syntax:

```pycon
Python 3.11.13 (main, Sep  2 2025, 14:20:25) [Clang 20.1.4 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> f'{1: abcd "{'aa'}" }'  # input
  File "<stdin>", line 1
    f'{1: abcd "{'aa'}" }'
                  ^^
SyntaxError: f-string: expecting '}'
>>> f'{1: abcd "{"aa"}" }'  # old output
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Invalid format specifier ' abcd "aa" ' for object of type 'int'
>>> f'{1: abcd "{'aa'}" }'  # new output
  File "<stdin>", line 1
    f'{1: abcd "{'aa'}" }'
                  ^^
SyntaxError: f-string: expecting '}'
```

We now preserve the invalid syntax in the input.

Unfortunately, this also seems to be another edge case I didn't consider
in https://github.com/astral-sh/ruff/pull/20867 because we don't flag
this as a syntax error after 0.14.1:

<details><summary>Shell output</summary>
<p>

```
> uvx ruff@0.14.0 check --ignore ALL --target-version py311 - <<EOF
f'{1: abcd "{'aa'}" }'
EOF
invalid-syntax: Cannot reuse outer quote character in f-strings on Python 3.11 (syntax was added in Python 3.12)
 --> -:1:14
  |
1 | f'{1: abcd "{'aa'}" }'
  |              ^
  |

Found 1 error.
> uvx ruff@0.14.1 check --ignore ALL --target-version py311 - <<EOF
f'{1: abcd "{'aa'}" }'
EOF
All checks passed!
> uvx python@3.11 -m ast <<EOF
f'{1: abcd "{'aa'}" }'
EOF
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/home/brent/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/ast.py", line 1752, in <module>
    main()
  File "/home/brent/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/ast.py", line 1748, in main
    tree = parse(source, args.infile.name, args.mode, type_comments=args.no_type_comments)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/brent/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/ast.py", line 50, in parse
    return compile(source, filename, mode, flags,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<stdin>", line 1
    f'{1: abcd "{'aa'}" }'
                  ^^
SyntaxError: f-string: expecting '}'
```

</p>
</details> 


I assumed that was the same `ParseError` as the one caused by
`f"{1:""}"`, but this is a nested interpolation inside of the format
spec.

## Test Plan

New test copied from the black compatibility test. I guess this is a
duplicate now, I started working on this branch before the new black
tests were imported, so I could delete the separate test in our fixtures
if that's preferable.

.config/nextest.toml

@@ -1,3 +1,12 @@
+# Define serial test group for running tests sequentially.
+[test-groups]
+serial = { max-threads = 1 }
+
+# Run ty file watching tests sequentially to avoid race conditions.
+[[profile.default.overrides]]
+filter = 'binary(file_watching)'
+test-group = 'serial'
+
 [profile.ci]
 # Print out output for failing tests as soon as they fail, and also at the end
 # of the run (for easy scrollability).

.editorconfig

@@ -10,7 +10,7 @@ indent_style = space
 insert_final_newline = true
 indent_size = 2
 
-[*.{rs,py,pyi}]
+[*.{rs,py,pyi,toml}]
 indent_size = 4
 
 [*.snap]
@@ -18,6 +18,3 @@ trim_trailing_whitespace = false
 
 [*.md]
 max_line_length = 100
-
-[*.toml]
-indent_size = 4

.github/workflows/build-docker.yml

@@ -40,7 +40,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -131,7 +131,7 @@ jobs:
             type=pep440,pattern={{ version }},value=${{ fromJson(inputs.plan).announcement_tag }}
             type=pep440,pattern={{ major }}.{{ minor }},value=${{ fromJson(inputs.plan).announcement_tag }}
 
-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -169,7 +169,7 @@ jobs:
     steps:
       - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -276,7 +276,7 @@ jobs:
             type=pep440,pattern={{ version }},value=${{ fromJson(inputs.plan).announcement_tag }}
             type=pep440,pattern={{ major }}.{{ minor }},value=${{ fromJson(inputs.plan).announcement_tag }}
 
-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}

.github/workflows/ci.yaml

@@ -12,6 +12,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 env:
   CARGO_INCREMENTAL: 0
   CARGO_NET_RETRY: 10
@@ -19,6 +23,7 @@ env:
   RUSTUP_MAX_RETRIES: 10
   PACKAGE_NAME: ruff
   PYTHON_VERSION: "3.13"
+  NEXTEST_PROFILE: ci
 
 jobs:
   determine_changes:
@@ -142,7 +147,7 @@ jobs:
         env:
           MERGE_BASE: ${{ steps.merge_base.outputs.sha }}
         run: |
-          if git diff --quiet "${MERGE_BASE}...HEAD" -- 'python/py_fuzzer/**' \
+          if git diff --quiet "${MERGE_BASE}...HEAD" -- 'python/py-fuzzer/**' \
           ; then
               echo "changed=false" >> "$GITHUB_OUTPUT"
           else
@@ -225,7 +230,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: |
           rustup component add clippy
@@ -237,7 +242,7 @@ jobs:
 
   cargo-test-linux:
     name: "cargo test (linux)"
-    runs-on: depot-ubuntu-22.04-16
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-16' || 'ubuntu-latest' }}
     needs: determine_changes
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
@@ -245,21 +250,21 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-insta
       - name: "Install uv"
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
         with:
           enable-cache: "true"
       - name: ty mdtests (GitHub annotations)
@@ -271,9 +276,6 @@ jobs:
         # This step is just to get nice GitHub annotations on the PR diff in the files-changed tab.
         run: cargo test -p ty_python_semantic --test mdtest || true
       - name: "Run tests"
-        shell: bash
-        env:
-          NEXTEST_PROFILE: "ci"
         run: cargo insta test --all-features --unreferenced reject --test-runner nextest
 
       # Check for broken links in the documentation.
@@ -299,40 +301,41 @@ jobs:
 
   cargo-test-linux-release:
     name: "cargo test (linux, release)"
+    # release builds timeout on GitHub runners, so this job is just skipped on forks in the `if` check
     runs-on: depot-ubuntu-22.04-16
     needs: determine_changes
-    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
+    if: |
+      github.repository == 'astral-sh/ruff' &&
+      !contains(github.event.pull_request.labels.*.name, 'no-test') &&
+      (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main')
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-insta
       - name: "Install uv"
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
         with:
           enable-cache: "true"
       - name: "Run tests"
-        shell: bash
-        env:
-          NEXTEST_PROFILE: "ci"
         run: cargo insta test --release --all-features --unreferenced reject --test-runner nextest
 
   cargo-test-windows:
     name: "cargo test (windows)"
-    runs-on: depot-windows-2022-16
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-windows-2022-16' || 'windows-latest' }}
     needs: determine_changes
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
@@ -340,27 +343,53 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-nextest
       - name: "Install uv"
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
         with:
           enable-cache: "true"
       - name: "Run tests"
-        shell: bash
         env:
-          NEXTEST_PROFILE: "ci"
           # Workaround for <https://github.com/nextest-rs/nextest/issues/1493>.
           RUSTUP_WINDOWS_PATH_ADD_BIN: 1
         run: |
           cargo nextest run --all-features --profile ci
           cargo test --all-features --doc
 
+  cargo-test-macos:
+    name: "cargo test (macos)"
+    runs-on: macos-latest
+    needs: determine_changes
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Install mold"
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install cargo nextest"
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        with:
+          tool: cargo-nextest
+      - name: "Install uv"
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        with:
+          enable-cache: "true"
+      - name: "Run tests"
+        run: |
+          cargo nextest run --all-features --profile ci
+          cargo test --all-features --doc
+
   cargo-test-wasm:
     name: "cargo test (wasm)"
     runs-on: ubuntu-latest
@@ -371,7 +400,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
@@ -391,26 +420,9 @@ jobs:
           cd crates/ty_wasm
           wasm-pack test --node
 
-  cargo-build-release:
-    name: "cargo build (release)"
-    runs-on: macos-latest
-    if: ${{ github.ref == 'refs/heads/main' }}
-    timeout-minutes: 20
-    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-        with:
-          persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - name: "Install Rust toolchain"
-        run: rustup show
-      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-      - name: "Build"
-        run: cargo build --release --locked
-
   cargo-build-msrv:
     name: "cargo build (msrv)"
-    runs-on: depot-ubuntu-latest-8
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-latest-8' || 'ubuntu-latest' }}
     needs: determine_changes
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
@@ -423,7 +435,7 @@ jobs:
         with:
           file: "Cargo.toml"
           field: "workspace.package.rust-version"
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         env:
           MSRV: ${{ steps.msrv.outputs.value }}
@@ -431,7 +443,6 @@ jobs:
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Build tests"
-        shell: bash
         env:
           MSRV: ${{ steps.msrv.outputs.value }}
         run: cargo "+${MSRV}" test --no-run --all-features
@@ -446,13 +457,13 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "fuzz -> target"
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo-binstall"
-        uses: cargo-bins/cargo-binstall@38e8f5e4c386b611d51e8aa997b9a06a3c8eb67a # v1.15.6
+        uses: cargo-bins/cargo-binstall@a66119fbb1c952daba62640c2609111fe0803621 # v1.15.7
       - name: "Install cargo-fuzz"
         # Download the latest version from quick install and not the github releases because github releases only has MUSL targets.
         run: cargo binstall cargo-fuzz --force  --disable-strategies crate-meta-data --no-confirm
@@ -472,7 +483,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download Ruff binary to test
         id: download-cached-binary
@@ -506,7 +517,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup component add rustfmt
       # Run all code generation scripts, and verify that the current output is
@@ -524,7 +535,7 @@ jobs:
 
   ecosystem:
     name: "ecosystem"
-    runs-on: depot-ubuntu-latest-8
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-latest-8' || 'ubuntu-latest' }}
     needs:
       - cargo-test-linux
       - determine_changes
@@ -649,13 +660,13 @@ jobs:
 
   fuzz-ty:
     name: "Fuzz for new ty panics"
-    runs-on: depot-ubuntu-22.04-16
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-16' || 'ubuntu-latest' }}
     needs:
       - cargo-test-linux
       - determine_changes
     # Only runs on pull requests, since that is the only we way we can find the base version for comparison.
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && github.event_name == 'pull_request' && (needs.determine_changes.outputs.ty == 'true' || needs.determine_changes.outputs.py-fuzzer == 'true') }}
-    timeout-minutes: 20
+    timeout-minutes: 5
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
@@ -673,7 +684,7 @@ jobs:
           branch: ${{ github.event.pull_request.base.ref }}
           workflow: "ci.yaml"
           check_artifacts: true
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: Fuzz
         env:
           FORCE_COLOR: 1
@@ -703,10 +714,28 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: cargo-bins/cargo-binstall@38e8f5e4c386b611d51e8aa997b9a06a3c8eb67a # v1.15.6
+      - uses: cargo-bins/cargo-binstall@a66119fbb1c952daba62640c2609111fe0803621 # v1.15.7
       - run: cargo binstall --no-confirm cargo-shear
       - run: cargo shear
 
+  ty-completion-evaluation:
+    name: "ty completion evaluation"
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-16' || 'ubuntu-latest' }}
+    needs: determine_changes
+    if: ${{ needs.determine_changes.outputs.ty == 'true' || github.ref == 'refs/heads/main' }}
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Run ty completion evaluation"
+        run: cargo run --release --package ty_completion_eval -- all --threshold 0.4 --tasks /tmp/completion-evaluation-tasks.csv
+      - name: "Ensure there are no changes"
+        run: diff ./crates/ty_completion_eval/completion-evaluation-tasks.csv /tmp/completion-evaluation-tasks.csv
+
   python-package:
     name: "python package"
     runs-on: ubuntu-latest
@@ -720,7 +749,7 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Prep README.md"
         run: python scripts/transform_readme.py --target pypi
       - name: "Build wheels"
@@ -737,19 +766,19 @@ jobs:
 
   pre-commit:
     name: "pre-commit"
-    runs-on: depot-ubuntu-22.04-16
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-16' || 'ubuntu-latest' }}
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
       - name: "Cache pre-commit"
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: ~/.cache/pre-commit
           key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
@@ -777,7 +806,7 @@ jobs:
       - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.13"
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Add SSH key"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
         uses: webfactory/ssh-agent@a6f90b1f127823b31d4d4a8d96047790581349bd # v0.9.1
@@ -786,7 +815,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
       - name: Install uv
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: "Install Insiders dependencies"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
         run: uv pip install -r docs/requirements-insiders.txt --system
@@ -816,7 +845,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Run checks"
@@ -886,7 +915,7 @@ jobs:
           persist-credentials: false
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
@@ -911,8 +940,12 @@ jobs:
     runs-on: ubuntu-24.04
     needs: determine_changes
     if: |
-      github.ref == 'refs/heads/main' || 
-      (needs.determine_changes.outputs.formatter == 'true' || needs.determine_changes.outputs.linter == 'true')
+      github.repository == 'astral-sh/ruff' &&
+      (
+        github.ref == 'refs/heads/main' ||
+        needs.determine_changes.outputs.formatter == 'true' ||
+        needs.determine_changes.outputs.linter == 'true'
+      )
     timeout-minutes: 20
     steps:
       - name: "Checkout Branch"
@@ -920,22 +953,22 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-codspeed
 
       - name: "Build benchmarks"
-        run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark formatter lexer linter parser
+        run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark --bench formatter --bench lexer --bench linter --bench parser
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
+        uses: CodSpeedHQ/action@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
         with:
           mode: instrumentation
           run: cargo codspeed run
@@ -946,8 +979,11 @@ jobs:
     runs-on: ubuntu-24.04
     needs: determine_changes
     if: |
-      github.ref == 'refs/heads/main' || 
-      needs.determine_changes.outputs.ty == 'true'
+      github.repository == 'astral-sh/ruff' &&
+      (
+        github.ref == 'refs/heads/main' ||
+        needs.determine_changes.outputs.ty == 'true'
+      )
     timeout-minutes: 20
     steps:
       - name: "Checkout Branch"
@@ -955,48 +991,52 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-codspeed
 
       - name: "Build benchmarks"
-        run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark ty
+        run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark --bench ty
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
+        uses: CodSpeedHQ/action@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
         with:
           mode: instrumentation
           run: cargo codspeed run
           token: ${{ secrets.CODSPEED_TOKEN }}
 
   benchmarks-walltime:
+    name: "benchmarks walltime (${{ matrix.benchmarks }})"
     runs-on: codspeed-macro
     needs: determine_changes
     if: ${{ github.repository == 'astral-sh/ruff' && !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.ty == 'true' || github.ref == 'refs/heads/main') }}
     timeout-minutes: 20
-    env:
-      TY_LOG: ruff_benchmark=debug
+    strategy:
+      matrix:
+        benchmarks:
+          - "medium|multithreaded"
+          - "small|large"
     steps:
       - name: "Checkout Branch"
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
         with:
           tool: cargo-codspeed
 
@@ -1004,7 +1044,7 @@ jobs:
         run: cargo codspeed build --features "codspeed,walltime" --no-default-features -p ruff_benchmark
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
+        uses: CodSpeedHQ/action@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
         env:
           # enabling walltime flamegraphs adds ~6 minutes to the CI time, and they don't
           # appear to provide much useful insight for our walltime benchmarks right now
@@ -1012,5 +1052,5 @@ jobs:
           CODSPEED_PERF_ENABLED: false
         with:
           mode: walltime
-          run: cargo codspeed run
+          run: cargo codspeed run --bench ty_walltime "${{ matrix.benchmarks }}"
           token: ${{ secrets.CODSPEED_TOKEN }}

.github/workflows/daily_fuzz.yaml

@@ -34,12 +34,12 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
       - name: Build ruff
         # A debug build means the script runs slower once it gets started,
         # but this is outweighed by the fact that a release build takes *much* longer to compile in CI

.github/workflows/mypy_primer.yaml

@@ -19,6 +19,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
   cancel-in-progress: true
 
+defaults:
+  run:
+    shell: bash
+
 env:
   CARGO_INCREMENTAL: 0
   CARGO_NET_RETRY: 10
@@ -29,7 +33,7 @@ env:
 jobs:
   mypy_primer:
     name: Run mypy_primer
-    runs-on: depot-ubuntu-22.04-32
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-32' || 'ubuntu-latest' }}
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -39,9 +43,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "ruff"
 
@@ -49,7 +53,6 @@ jobs:
         run: rustup show
 
       - name: Run mypy_primer
-        shell: bash
         env:
           PRIMER_SELECTOR: crates/ty_python_semantic/resources/primer/good.txt
           DIFF_FILE: mypy_primer.diff
@@ -72,7 +75,7 @@ jobs:
 
   memory_usage:
     name: Run memory statistics
-    runs-on: depot-ubuntu-22.04-32
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-32' || 'ubuntu-latest' }}
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -82,9 +85,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "ruff"
 
@@ -92,7 +95,6 @@ jobs:
         run: rustup show
 
       - name: Run mypy_primer
-        shell: bash
         env:
           TY_MAX_PARALLELISM: 1 # for deterministic memory numbers
           TY_MEMORY_REPORT: mypy_primer

.github/workflows/publish-docs.yml

@@ -68,7 +68,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
 
       - name: "Install Insiders dependencies"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}

.github/workflows/publish-pypi.yml

@@ -22,7 +22,7 @@ jobs:
       id-token: write
     steps:
       - name: "Install uv"
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           pattern: wheels-*

.github/workflows/sync_typeshed.yaml

@@ -16,8 +16,10 @@ name: Sync typeshed
 # 3. Once the Windows worker is done, a MacOS worker:
 #    a. Checks out the branch created by the Linux worker
 #    b. Syncs all docstrings available on MacOS that are not available on Linux or Windows
-#    c. Commits the changes and pushes them to the same upstream branch
-#    d. Creates a PR against the `main` branch using the branch all three workers have pushed to
+#    c. Attempts to update any snapshots that might have changed
+#       (this sub-step is allowed to fail)
+#    d. Commits the changes and pushes them to the same upstream branch
+#    e. Creates a PR against the `main` branch using the branch all three workers have pushed to
 # 4. If any of steps 1-3 failed, an issue is created in the `astral-sh/ruff` repository
 
 on:
@@ -26,8 +28,18 @@ on:
     # Run on the 1st and the 15th of every month:
     - cron: "0 0 1,15 * *"
 
+defaults:
+  run:
+    shell: bash
+
 env:
-  FORCE_COLOR: 1
+  # Don't set this flag globally for the workflow: it does strange things
+  # to the snapshots in the `cargo insta test --accept` step in the MacOS job.
+  #
+  # FORCE_COLOR: 1
+
+  CARGO_TERM_COLOR: always
+  NEXTEST_PROFILE: "ci"
   GH_TOKEN: ${{ github.token }}
 
   # The name of the upstream branch that the first worker creates,
@@ -65,7 +77,7 @@ jobs:
         run: |
           git config --global user.name typeshedbot
           git config --global user.email '<>'
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: Sync typeshed stubs
         run: |
           rm -rf "ruff/${VENDORED_TYPESHED}"
@@ -86,6 +98,8 @@ jobs:
           git commit -m "Sync typeshed. Source commit: https://github.com/python/typeshed/commit/$(git -C ../typeshed rev-parse HEAD)" --allow-empty
       - name: Sync Linux docstrings
         if: ${{ success() }}
+        env:
+          FORCE_COLOR: 1
         run: |
           cd ruff
           ./scripts/codemod_docstrings.sh
@@ -117,14 +131,15 @@ jobs:
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot
           git config --global user.email '<>'
       - name: Sync Windows docstrings
         id: docstrings
-        shell: bash
+        env:
+          FORCE_COLOR: 1
         run: ./scripts/codemod_docstrings.sh
       - name: Commit the changes
         if: ${{ steps.docstrings.outcome == 'success' }}
@@ -155,32 +170,69 @@ jobs:
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot
           git config --global user.email '<>'
       - name: Sync macOS docstrings
-        run: ./scripts/codemod_docstrings.sh
-      - name: Commit and push the changes
         if: ${{ success() }}
+        env:
+          FORCE_COLOR: 1
         run: |
+          ./scripts/codemod_docstrings.sh
           git commit -am "Sync macOS docstrings" --allow-empty
-
+      - name: Format the changes
+        if: ${{ success() }}
+        env:
+          FORCE_COLOR: 1
+        run: |
           # Here we just reformat the codemodded stubs so that they are
           # consistent with the other typeshed stubs around them.
           # Typeshed formats code using black in their CI, so we just invoke
           # black on the stubs the same way that typeshed does.
           uvx black "${VENDORED_TYPESHED}/stdlib" --config "${VENDORED_TYPESHED}/pyproject.toml" || true
           git commit -am "Format codemodded docstrings" --allow-empty
-
-          rm "${VENDORED_TYPESHED}/pyproject.toml"
-          git commit -am "Remove pyproject.toml file"
-
-          git push
-      - name: Create a PR
+      - name: Remove typeshed pyproject.toml file
         if: ${{ success() }}
         run: |
+          rm "${VENDORED_TYPESHED}/pyproject.toml"
+          git commit -am "Remove pyproject.toml file"
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - name: "Install Rust toolchain"
+        if: ${{ success() }}
+        run: rustup show
+      - name: "Install mold"
+        if: ${{ success() }}
+        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+      - name: "Install cargo nextest"
+        if: ${{ success() }}
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        with:
+          tool: cargo-nextest
+      - name: "Install cargo insta"
+        if: ${{ success() }}
+        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        with:
+          tool: cargo-insta
+      - name: Update snapshots
+        if: ${{ success() }}
+        run: |
+          # The `cargo insta` docs indicate that `--unreferenced=delete` might be a good option,
+          # but from local testing it appears to just revert all changes made by `cargo insta test --accept`.
+          #
+          # If there were only snapshot-related failures, `cargo insta test --accept` will have exit code 0,
+          # but if there were also other mdtest failures (for example), it will return a nonzero exit code.
+          # We don't care about other tests failing here, we just want snapshots updated where possible,
+          # so we use `|| true` here to ignore the exit code.
+          cargo insta test --accept --color=always --all-features --test-runner=nextest || true
+      - name: Commit snapshot changes
+        if: ${{ success() }}
+        run: git commit -am "Update snapshots" || echo "No snapshot changes to commit"
+      - name: Push changes upstream and create a PR
+        if: ${{ success() }}
+        run: |
+          git push
           gh pr list --repo "${GITHUB_REPOSITORY}" --head "${UPSTREAM_BRANCH}" --json id --jq length | grep 1 && exit 0 # exit if there is existing pr
           gh pr create --title "[ty] Sync vendored typeshed stubs" --body "Close and reopen this PR to trigger CI" --label "ty"
 

.github/workflows/ty-ecosystem-analyzer.yaml

@@ -22,7 +22,7 @@ env:
 jobs:
   ty-ecosystem-analyzer:
     name: Compute diagnostic diff
-    runs-on: depot-ubuntu-22.04-32
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-32' || 'ubuntu-latest' }}
     timeout-minutes: 20
     if: contains(github.event.label.name, 'ecosystem-analyzer')
     steps:
@@ -33,9 +33,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "ruff"
 
@@ -64,12 +64,12 @@ jobs:
 
           cd ..
 
-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@279f8a15b0e7f77213bf9096dbc2335a19ef89c5"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@908758da02a73ef3f3308e1dbb2248510029bbe4"
 
           ecosystem-analyzer \
             --repository ruff \
             diff \
-            --profile=release \
+            --profile=profiling \
             --projects-old ruff/projects_old.txt \
             --projects-new ruff/projects_new.txt \
             --old old_commit \

.github/workflows/ty-ecosystem-report.yaml

@@ -19,7 +19,7 @@ env:
 jobs:
   ty-ecosystem-report:
     name: Create ecosystem report
-    runs-on: depot-ubuntu-22.04-32
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-32' || 'ubuntu-latest' }}
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -29,9 +29,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "ruff"
 
@@ -49,13 +49,13 @@ jobs:
 
           cd ..
 
-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@279f8a15b0e7f77213bf9096dbc2335a19ef89c5"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@908758da02a73ef3f3308e1dbb2248510029bbe4"
 
           ecosystem-analyzer \
             --verbose \
             --repository ruff \
             analyze \
-            --profile=release \
+            --profile=profiling \
             --projects ruff/crates/ty_python_semantic/resources/primer/good.txt \
             --output ecosystem-diagnostics.json
 

.github/workflows/typing_conformance.yaml

@@ -29,7 +29,7 @@ env:
 jobs:
   typing_conformance:
     name: Compute diagnostic diff
-    runs-on: depot-ubuntu-22.04-32
+    runs-on: ${{ github.repository == 'astral-sh/ruff' && 'depot-ubuntu-22.04-32' || 'ubuntu-latest' }}
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -45,7 +45,7 @@ jobs:
           path: typing
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
         with:
           workspaces: "ruff"
 

.pre-commit-config.yaml

@@ -16,7 +16,8 @@ exclude: |
     crates/ruff_python_formatter/resources/.*|
     crates/ruff_python_formatter/tests/snapshots/.*|
     crates/ruff_python_resolver/resources/.*|
-    crates/ruff_python_resolver/tests/snapshots/.*
+    crates/ruff_python_resolver/tests/snapshots/.*|
+    crates/ty_completion_eval/truth/.*
   )$
 
 repos:

BREAKING_CHANGES.md

@@ -1,5 +1,21 @@
 # Breaking Changes
 
+## 0.14.0
+
+- **Default to Python 3.10**
+
+    Ruff now defaults to Python 3.10 instead of 3.9 if no explicit Python
+    version is configured using [`ruff.target-version`](https://docs.astral.sh/ruff/settings/#target-version)
+    or [`project.requires-python`](https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#python-requires)
+    ([#20725](https://github.com/astral-sh/ruff/pull/20725))
+
+- **Default to Python 3.14 for syntax errors**
+
+    Ruff will default to the _latest_ supported Python version (3.14) when
+    checking for syntax errors without a Python version configured. The default
+    in all other cases, like applying lint rules, remains at the minimum
+    supported Python version (3.10).
+
 ## 0.13.0
 
 - **Several rules can now add `from __future__ import annotations` automatically**

CHANGELOG.md

@@ -1,223 +1,104 @@
 # Changelog
 
-## 0.13.2
+## 0.14.1
 
-Released on 2025-09-25.
+Released on 2025-10-16.
 
 ### Preview features
 
-- \[`flake8-async`\] Implement `blocking-path-method` (`ASYNC240`) ([#20264](https://github.com/astral-sh/ruff/pull/20264))
-- \[`flake8-bugbear`\] Implement `map-without-explicit-strict` (`B912`) ([#20429](https://github.com/astral-sh/ruff/pull/20429))
-- \[`flake8-bultins`\] Detect class-scope builtin shadowing in decorators, default args, and attribute initializers (`A003`) ([#20178](https://github.com/astral-sh/ruff/pull/20178))
-- \[`ruff`\] Implement `logging-eager-conversion` (`RUF065`) ([#19942](https://github.com/astral-sh/ruff/pull/19942))
-- Include `.pyw` files by default when linting and formatting ([#20458](https://github.com/astral-sh/ruff/pull/20458))
+- [formatter] Remove parentheses around multiple exception types on Python 3.14+ ([#20768](https://github.com/astral-sh/ruff/pull/20768))
+- \[`flake8-bugbear`\] Omit annotation in preview fix for `B006` ([#20877](https://github.com/astral-sh/ruff/pull/20877))
+- \[`flake8-logging-format`\] Avoid dropping implicitly concatenated pieces in the `G004` fix ([#20793](https://github.com/astral-sh/ruff/pull/20793))
+- \[`pydoclint`\] Implement `docstring-extraneous-parameter` (`DOC102`) ([#20376](https://github.com/astral-sh/ruff/pull/20376))
+- \[`pyupgrade`\] Extend `UP019` to detect `typing_extensions.Text` (`UP019`) ([#20825](https://github.com/astral-sh/ruff/pull/20825))
+- \[`pyupgrade`\] Fix false negative for `TypeVar` with default argument in `non-pep695-generic-class` (`UP046`) ([#20660](https://github.com/astral-sh/ruff/pull/20660))
 
 ### Bug fixes
 
-- Deduplicate input paths ([#20105](https://github.com/astral-sh/ruff/pull/20105))
-- \[`flake8-comprehensions`\] Preserve trailing commas for single-element lists (`C409`) ([#19571](https://github.com/astral-sh/ruff/pull/19571))
-- \[`flake8-pyi`\] Avoid syntax error from conflict with `PIE790` (`PYI021`) ([#20010](https://github.com/astral-sh/ruff/pull/20010))
-- \[`flake8-simplify`\] Correct fix for positive `maxsplit` without separator (`SIM905`) ([#20056](https://github.com/astral-sh/ruff/pull/20056))
-- \[`pyupgrade`\] Fix `UP008` not to apply when `__class__` is a local variable ([#20497](https://github.com/astral-sh/ruff/pull/20497))
-- \[`ruff`\] Fix `B004` to skip invalid `hasattr`/`getattr` calls ([#20486](https://github.com/astral-sh/ruff/pull/20486))
-- \[`ruff`\] Replace `-nan` with `nan` when using the value to construct a `Decimal` (`FURB164` ) ([#20391](https://github.com/astral-sh/ruff/pull/20391))
-
-### Documentation
-
-- Add 'Finding ways to help' to CONTRIBUTING.md ([#20567](https://github.com/astral-sh/ruff/pull/20567))
-- Update import path to `ruff-wasm-web` ([#20539](https://github.com/astral-sh/ruff/pull/20539))
-- \[`flake8-bandit`\] Clarify the supported hashing functions (`S324`) ([#20534](https://github.com/astral-sh/ruff/pull/20534))
-
-### Other changes
-
-- \[`playground`\] Allow hover quick fixes to appear for overlapping diagnostics ([#20527](https://github.com/astral-sh/ruff/pull/20527))
-- \[`playground`\] Fix non‑BMP code point handling in quick fixes and markers ([#20526](https://github.com/astral-sh/ruff/pull/20526))
-
-### Contributors
-
-- [@BurntSushi](https://github.com/BurntSushi)
-- [@mtshiba](https://github.com/mtshiba)
-- [@second-ed](https://github.com/second-ed)
-- [@danparizher](https://github.com/danparizher)
-- [@ShikChen](https://github.com/ShikChen)
-- [@PieterCK](https://github.com/PieterCK)
-- [@GDYendell](https://github.com/GDYendell)
-- [@RazerM](https://github.com/RazerM)
-- [@TaKO8Ki](https://github.com/TaKO8Ki)
-- [@amyreese](https://github.com/amyreese)
-- [@ntbre](https://github.com/ntBre)
-- [@MichaReiser](https://github.com/MichaReiser)
-
-## 0.13.1
-
-Released on 2025-09-18.
-
-### Preview features
-
-- \[`flake8-simplify`\] Detect unnecessary `None` default for additional key expression types (`SIM910`) ([#20343](https://github.com/astral-sh/ruff/pull/20343))
-- \[`flake8-use-pathlib`\] Add fix for `PTH123` ([#20169](https://github.com/astral-sh/ruff/pull/20169))
-- \[`flake8-use-pathlib`\] Fix `PTH101`, `PTH104`, `PTH105`, `PTH121` fixes ([#20143](https://github.com/astral-sh/ruff/pull/20143))
-- \[`flake8-use-pathlib`\] Make `PTH111` fix unsafe because it can change behavior ([#20215](https://github.com/astral-sh/ruff/pull/20215))
-- \[`pycodestyle`\] Fix `E301` to only trigger for functions immediately within a class ([#19768](https://github.com/astral-sh/ruff/pull/19768))
-- \[`refurb`\] Mark `single-item-membership-test` fix as always unsafe (`FURB171`) ([#20279](https://github.com/astral-sh/ruff/pull/20279))
-
-### Bug fixes
-
-- Handle t-strings for token-based rules and suppression comments ([#20357](https://github.com/astral-sh/ruff/pull/20357))
-- \[`flake8-bandit`\] Fix truthiness: dict-only `**` displays not truthy for `shell` (`S602`, `S604`, `S609`) ([#20177](https://github.com/astral-sh/ruff/pull/20177))
-- \[`flake8-simplify`\] Fix diagnostic to show correct method name for `str.rsplit` calls (`SIM905`) ([#20459](https://github.com/astral-sh/ruff/pull/20459))
-- \[`flynt`\] Use triple quotes for joined raw strings with newlines (`FLY002`) ([#20197](https://github.com/astral-sh/ruff/pull/20197))
-- \[`pyupgrade`\] Fix false positive when class name is shadowed by local variable (`UP008`) ([#20427](https://github.com/astral-sh/ruff/pull/20427))
-- \[`pyupgrade`\] Prevent infinite loop with `I002` and `UP026` ([#20327](https://github.com/astral-sh/ruff/pull/20327))
-- \[`ruff`\] Recognize t-strings, generators, and lambdas in `invalid-index-type` (`RUF016`) ([#20213](https://github.com/astral-sh/ruff/pull/20213))
+- Fix false negatives in `Truthiness::from_expr` for lambdas, generators, and f-strings ([#20704](https://github.com/astral-sh/ruff/pull/20704))
+- Fix syntax error false positives for escapes and quotes in f-strings ([#20867](https://github.com/astral-sh/ruff/pull/20867))
+- Fix syntax error false positives on parenthesized context managers ([#20846](https://github.com/astral-sh/ruff/pull/20846))
+- \[`fastapi`\] Fix false positives for path parameters that FastAPI doesn't recognize (`FAST003`) ([#20687](https://github.com/astral-sh/ruff/pull/20687))
+- \[`flake8-pyi`\] Fix operator precedence by adding parentheses when needed (`PYI061`) ([#20508](https://github.com/astral-sh/ruff/pull/20508))
+- \[`ruff`\] Suppress diagnostic for f-string interpolations with debug text (`RUF010`) ([#20525](https://github.com/astral-sh/ruff/pull/20525))
 
 ### Rule changes
 
-- \[`RUF102`\] Respect rule redirects in invalid rule code detection ([#20245](https://github.com/astral-sh/ruff/pull/20245))
-- \[`flake8-bugbear`\] Mark the fix for `unreliable-callable-check` as always unsafe (`B004`) ([#20318](https://github.com/astral-sh/ruff/pull/20318))
-- \[`ruff`\] Allow dataclass attribute value instantiation from nested frozen dataclass (`RUF009`) ([#20352](https://github.com/astral-sh/ruff/pull/20352))
-
-### CLI
-
-- Add fixes to `output-format=sarif` ([#20300](https://github.com/astral-sh/ruff/pull/20300))
-- Treat panics as fatal diagnostics, sort panics last ([#20258](https://github.com/astral-sh/ruff/pull/20258))
+- \[`airflow`\] Add warning to `airflow.datasets.DatasetEvent` usage (`AIR301`) ([#20551](https://github.com/astral-sh/ruff/pull/20551))
+- \[`flake8-bugbear`\] Mark `B905` and `B912` fixes as unsafe ([#20695](https://github.com/astral-sh/ruff/pull/20695))
+- Use `DiagnosticTag` for more rules - changes display in editors ([#20758](https://github.com/astral-sh/ruff/pull/20758),[#20734](https://github.com/astral-sh/ruff/pull/20734))
 
 ### Documentation
 
-- \[`ruff`\] Add `analyze.string-imports-min-dots` to settings ([#20375](https://github.com/astral-sh/ruff/pull/20375))
-- Update README.md with Albumentations new repository URL ([#20415](https://github.com/astral-sh/ruff/pull/20415))
+- Update Python compatibility from 3.13 to 3.14 in README.md ([#20852](https://github.com/astral-sh/ruff/pull/20852))
+- Update `lint.flake8-type-checking.quoted-annotations` docs ([#20765](https://github.com/astral-sh/ruff/pull/20765))
+- Update setup instructions for Zed 0.208.0+ ([#20902](https://github.com/astral-sh/ruff/pull/20902))
+- \[`flake8-datetimez`\] Clarify docs for several rules ([#20778](https://github.com/astral-sh/ruff/pull/20778))
+- Fix typo in `RUF015` description ([#20873](https://github.com/astral-sh/ruff/pull/20873))
 
 ### Other changes
 
-- Bump MSRV to Rust 1.88 ([#20470](https://github.com/astral-sh/ruff/pull/20470))
-- Enable inline noqa for multiline strings in playground ([#20442](https://github.com/astral-sh/ruff/pull/20442))
+- Reduce binary size ([#20863](https://github.com/astral-sh/ruff/pull/20863))
+- Improved error recovery for unclosed strings (including f- and t-strings) ([#20848](https://github.com/astral-sh/ruff/pull/20848))
 
 ### Contributors
 
-- [@chirizxc](https://github.com/chirizxc)
-- [@danparizher](https://github.com/danparizher)
-- [@IDrokin117](https://github.com/IDrokin117)
-- [@amyreese](https://github.com/amyreese)
-- [@AlexWaygood](https://github.com/AlexWaygood)
-- [@dylwil3](https://github.com/dylwil3)
-- [@njhearp](https://github.com/njhearp)
-- [@woodruffw](https://github.com/woodruffw)
-- [@dcreager](https://github.com/dcreager)
-- [@TaKO8Ki](https://github.com/TaKO8Ki)
-- [@BurntSushi](https://github.com/BurntSushi)
-- [@salahelfarissi](https://github.com/salahelfarissi)
+- [@ntBre](https://github.com/ntBre)
+- [@Paillat-dev](https://github.com/Paillat-dev)
+- [@terror](https://github.com/terror)
+- [@pieterh-oai](https://github.com/pieterh-oai)
 - [@MichaReiser](https://github.com/MichaReiser)
+- [@TaKO8Ki](https://github.com/TaKO8Ki)
+- [@ageorgou](https://github.com/ageorgou)
+- [@danparizher](https://github.com/danparizher)
+- [@mgaitan](https://github.com/mgaitan)
+- [@augustelalande](https://github.com/augustelalande)
+- [@dylwil3](https://github.com/dylwil3)
+- [@Lee-W](https://github.com/Lee-W)
+- [@injust](https://github.com/injust)
+- [@CarrotManMatt](https://github.com/CarrotManMatt)
 
-## 0.13.0
+## 0.14.0
 
-Check out the [blog post](https://astral.sh/blog/ruff-v0.13.0) for a migration
-guide and overview of the changes!
+Released on 2025-10-07.
 
 ### Breaking changes
 
-- **Several rules can now add `from __future__ import annotations` automatically**
-
-    `TC001`, `TC002`, `TC003`, `RUF013`, and `UP037` now add `from __future__ import annotations` as part of their fixes when the
-    `lint.future-annotations` setting is enabled. This allows the rules to move
-    more imports into `TYPE_CHECKING` blocks (`TC001`, `TC002`, and `TC003`),
-    use PEP 604 union syntax on Python versions before 3.10 (`RUF013`), and
-    unquote more annotations (`UP037`).
-
-- **Full module paths are now used to verify first-party modules**
-
-    Ruff now checks that the full path to a module exists on disk before
-    categorizing it as a first-party import. This change makes first-party
-    import detection more accurate, helping to avoid false positives on local
-    directories with the same name as a third-party dependency, for example. See
-    the [FAQ
-    section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) on import categorization for more details.
-
-- **Deprecated rules must now be selected by exact rule code**
-
-    Ruff will no longer activate deprecated rules selected by their group name
-    or prefix. As noted below, the two remaining deprecated rules were also
-    removed in this release, so this won't affect any current rules, but it will
-    still affect any deprecations in the future.
-
-- **The deprecated macOS configuration directory fallback has been removed**
-
-    Ruff will no longer look for a user-level configuration file at
-    `~/Library/Application Support/ruff/ruff.toml` on macOS. This feature was
-    deprecated in v0.5 in favor of using the [XDG
-    specification](https://specifications.freedesktop.org/basedir-spec/latest/)
-    (usually resolving to `~/.config/ruff/ruff.toml`), like on Linux. The
-    fallback and accompanying deprecation warning have now been removed.
-
-### Removed Rules
-
-The following rules have been removed:
-
-- [`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name) (`PD901`)
-- [`non-pep604-isinstance`](https://docs.astral.sh/ruff/rules/non-pep604-isinstance) (`UP038`)
-
-### Stabilization
-
-The following rules have been stabilized and are no longer in preview:
-
-- [`airflow-dag-no-schedule-argument`](https://docs.astral.sh/ruff/rules/airflow-dag-no-schedule-argument)
-    (`AIR002`)
-- [`airflow3-removal`](https://docs.astral.sh/ruff/rules/airflow3-removal) (`AIR301`)
-- [`airflow3-moved-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-moved-to-provider)
-    (`AIR302`)
-- [`airflow3-suggested-update`](https://docs.astral.sh/ruff/rules/airflow3-suggested-update)
-    (`AIR311`)
-- [`airflow3-suggested-to-move-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-suggested-to-move-to-provider)
-    (`AIR312`)
-- [`long-sleep-not-forever`](https://docs.astral.sh/ruff/rules/long-sleep-not-forever) (`ASYNC116`)
-- [`f-string-number-format`](https://docs.astral.sh/ruff/rules/f-string-number-format) (`FURB116`)
-- [`os-symlink`](https://docs.astral.sh/ruff/rules/os-symlink) (`PTH211`)
-- [`generic-not-last-base-class`](https://docs.astral.sh/ruff/rules/generic-not-last-base-class)
-    (`PYI059`)
-- [`redundant-none-literal`](https://docs.astral.sh/ruff/rules/redundant-none-literal) (`PYI061`)
-- [`pytest-raises-ambiguous-pattern`](https://docs.astral.sh/ruff/rules/pytest-raises-ambiguous-pattern)
-    (`RUF043`)
-- [`unused-unpacked-variable`](https://docs.astral.sh/ruff/rules/unused-unpacked-variable)
-    (`RUF059`)
-- [`useless-class-metaclass-type`](https://docs.astral.sh/ruff/rules/useless-class-metaclass-type)
-    (`UP050`)
-
-The following behaviors have been stabilized:
-
-- [`assert-raises-exception`](https://docs.astral.sh/ruff/rules/assert-raises-exception) (`B017`)
-    now checks for direct calls to `unittest.TestCase.assert_raises` and `pytest.raises` instead of
-    only the context manager forms.
-- [`missing-trailing-comma`](https://docs.astral.sh/ruff/rules/missing-trailing-comma) (`COM812`)
-    and [`prohibited-trailing-comma`](https://docs.astral.sh/ruff/rules/prohibited-trailing-comma)
-    (`COM819`) now check for trailing commas in PEP 695 type parameter lists.
-- [`raw-string-in-exception`](https://docs.astral.sh/ruff/rules/raw-string-in-exception) (`EM101`)
-    now also checks for byte strings in exception messages.
-- [`invalid-mock-access`](https://docs.astral.sh/ruff/rules/invalid-mock-access) (`PGH005`) now
-    checks for `AsyncMock` methods like `not_awaited` in addition to the synchronous variants.
-- [`useless-import-alias`](https://docs.astral.sh/ruff/rules/useless-import-alias) (`PLC0414`) no
-    longer applies to `__init__.py` files, where it conflicted with one of the suggested fixes for
-    [`unused-import`](https://docs.astral.sh/ruff/rules/unused-import) (`F401`).
-- [`bidirectional-unicode`](https://docs.astral.sh/ruff/rules/bidirectional-unicode) (`PLE2502`) now
-    also checks for U+061C (Arabic Letter Mark).
-- The fix for
-    [`multiple-with-statements`](https://docs.astral.sh/ruff/rules/multiple-with-statements)
-    (`SIM117`) is now marked as always safe.
+- Update default and latest Python versions for 3.14 ([#20725](https://github.com/astral-sh/ruff/pull/20725))
 
 ### Preview features
 
-- \[`pyupgrade`\] Enable `UP043` in stub files ([#20027](https://github.com/astral-sh/ruff/pull/20027))
+- \[`flake8-bugbear`\] Include certain guaranteed-mutable expressions: tuples, generators, and assignment expressions (`B006`) ([#20024](https://github.com/astral-sh/ruff/pull/20024))
+- \[`refurb`\] Add fixes for `FURB101` and `FURB103` ([#20520](https://github.com/astral-sh/ruff/pull/20520))
+- \[`ruff`\] Extend `FA102` with listed PEP 585-compatible APIs ([#20659](https://github.com/astral-sh/ruff/pull/20659))
 
 ### Bug fixes
 
-- \[`pyupgrade`\] Apply `UP008` only when the `__class__` cell exists ([#19424](https://github.com/astral-sh/ruff/pull/19424))
-- \[`ruff`\] Fix empty f-string detection in `in-empty-collection` (`RUF060`) ([#20249](https://github.com/astral-sh/ruff/pull/20249))
-
-### Server
-
-- Add support for using uv as an alternative formatter backend ([#19665](https://github.com/astral-sh/ruff/pull/19665))
+- \[`flake8-annotations`\] Fix return type annotations to handle shadowed builtin symbols (`ANN201`, `ANN202`, `ANN204`, `ANN205`, `ANN206`) ([#20612](https://github.com/astral-sh/ruff/pull/20612))
+- \[`flynt`\] Fix f-string quoting for mixed quote joiners (`FLY002`) ([#20662](https://github.com/astral-sh/ruff/pull/20662))
+- \[`isort`\] Fix inserting required imports before future imports (`I002`) ([#20676](https://github.com/astral-sh/ruff/pull/20676))
+- \[`ruff`\] Handle argfile expansion errors gracefully ([#20691](https://github.com/astral-sh/ruff/pull/20691))
+- \[`ruff`\] Skip `RUF051` if `else`/`elif` block is present ([#20705](https://github.com/astral-sh/ruff/pull/20705))
+- \[`ruff`\] Improve handling of intermixed comments inside from-imports ([#20561](https://github.com/astral-sh/ruff/pull/20561))
 
 ### Documentation
 
-- \[`pep8-naming`\] Fix formatting of `__all__` (`N816`) ([#20301](https://github.com/astral-sh/ruff/pull/20301))
+- \[`flake8-comprehensions`\] Clarify fix safety documentation (`C413`) ([#20640](https://github.com/astral-sh/ruff/pull/20640))
+
+### Contributors
+
+- [@danparizher](https://github.com/danparizher)
+- [@terror](https://github.com/terror)
+- [@TaKO8Ki](https://github.com/TaKO8Ki)
+- [@ntBre](https://github.com/ntBre)
+- [@njhearp](https://github.com/njhearp)
+- [@amyreese](https://github.com/amyreese)
+- [@IDrokin117](https://github.com/IDrokin117)
+- [@chirizxc](https://github.com/chirizxc)
+
+## 0.13.x
+
+See [changelogs/0.13.x](./changelogs/0.13.x.md)
 
 ## 0.12.x
 

CONTRIBUTING.md

@@ -321,10 +321,16 @@ them to [PyPI](https://pypi.org/project/ruff/).
 Ruff follows the [semver](https://semver.org/) versioning standard. However, as pre-1.0 software,
 even patch releases may contain [non-backwards-compatible changes](https://semver.org/#spec-item-4).
 
-### Creating a new release
+### Installing tools
 
 1. Install `uv`: `curl -LsSf https://astral.sh/uv/install.sh | sh`
 
+1. Install `npm`: `brew install npm` or similar
+
+### Creating a new release
+
+Commit each step of this process separately for easier review.
+
 1. Run `./scripts/release.sh`; this command will:
 
     - Generate a temporary virtual environment with `rooster`
@@ -337,6 +343,7 @@ even patch releases may contain [non-backwards-compatible changes](https://semve
 
     - Often labels will be missing from pull requests they will need to be manually organized into the proper section
     - Changes should be edited to be user-facing descriptions, avoiding internal details
+    - Square brackets (eg, `[ruff]` project name) will be automatically escaped by `pre-commit`
 
     Additionally, for minor releases:
 
@@ -376,13 +383,13 @@ even patch releases may contain [non-backwards-compatible changes](https://semve
 
 1. Verify the GitHub release:
 
-    1. The Changelog should match the content of `CHANGELOG.md`
-    1. Append the contributors from the `scripts/release.sh` script
+    1. The changelog should match the content of `CHANGELOG.md`
 
 1. If needed, [update the schemastore](https://github.com/astral-sh/ruff/blob/main/scripts/update_schemastore.py).
 
     1. One can determine if an update is needed when
         `git diff old-version-tag new-version-tag -- ruff.schema.json` returns a non-empty diff.
+    1. Run `uv run --only-dev --no-sync scripts/update_schemastore.py --proto <https|ssh>`
     1. Once run successfully, you should follow the link in the output to create a PR.
 
 1. If needed, update the [`ruff-lsp`](https://github.com/astral-sh/ruff-lsp) and

Cargo.lock

@@ -50,9 +50,9 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.20"
+version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ae563653d1938f79b1ab1b5e668c87c76a9930414574a6583a7b7e11a8e6192"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -65,9 +65,9 @@ dependencies = [
 
 [[package]]
 name = "anstyle"
-version = "1.0.11"
+version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "862ed96ca487e809f1c8e5a8447f6ee2cf102f846893800b20cebdf541fc6bbd"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
 
 [[package]]
 name = "anstyle-lossy"
@@ -214,15 +214,6 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
-[[package]]
-name = "bincode"
-version = "1.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bincode"
 version = "2.0.1"
@@ -243,6 +234,26 @@ dependencies = [
  "virtue",
 ]
 
+[[package]]
+name = "bindgen"
+version = "0.72.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
+dependencies = [
+ "bitflags 2.9.4",
+ "cexpr",
+ "clang-sys",
+ "itertools 0.10.5",
+ "log",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -316,9 +327,9 @@ dependencies = [
 
 [[package]]
 name = "camino"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1de8bc0aa9e9385ceb3bf0c152e3a9b9544f6c4a912c8ae504e80c1f0368603"
+checksum = "276a59bf2b2c967788139340c9f0c5b12d7fd6630315c15c217e559de85d2609"
 dependencies = [
  "serde_core",
 ]
@@ -350,6 +361,15 @@ dependencies = [
  "shlex",
 ]
 
+[[package]]
+name = "cexpr"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.3"
@@ -400,6 +420,17 @@ dependencies = [
  "half",
 ]
 
+[[package]]
+name = "clang-sys"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b023947811758c97c59bf9d1c188fd619ad4718dcaa767947df1cadb14f39f4"
+dependencies = [
+ "glob",
+ "libc",
+ "libloading",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.48"
@@ -486,16 +517,17 @@ dependencies = [
 
 [[package]]
 name = "codspeed"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35584c5fcba8059780748866387fb97c5a203bcfc563fc3d0790af406727a117"
+checksum = "d0f62ea8934802f8b374bf691eea524c3aa444d7014f604dd4182a3667b69510"
 dependencies = [
  "anyhow",
- "bincode 1.3.3",
+ "bindgen",
+ "cc",
  "colored 2.2.0",
  "glob",
  "libc",
- "nix 0.29.0",
+ "nix 0.30.1",
  "serde",
  "serde_json",
  "statrs",
@@ -504,20 +536,22 @@ dependencies = [
 
 [[package]]
 name = "codspeed-criterion-compat"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78f6c1c6bed5fd84d319e8b0889da051daa361c79b7709c9394dfe1a882bba67"
+checksum = "d87efbc015fc0ff1b2001cd87df01c442824de677e01a77230bf091534687abb"
 dependencies = [
+ "clap",
  "codspeed",
  "codspeed-criterion-compat-walltime",
  "colored 2.2.0",
+ "regex",
 ]
 
 [[package]]
 name = "codspeed-criterion-compat-walltime"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c989289ce6b1cbde72ed560496cb8fbf5aa14d5ef5666f168e7f87751038352e"
+checksum = "ae5713ace440123bb4f1f78dd068d46872cb8548bfe61f752e7b2ad2c06d7f00"
 dependencies = [
  "anes",
  "cast",
@@ -540,20 +574,22 @@ dependencies = [
 
 [[package]]
 name = "codspeed-divan-compat"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adf64eda57508448d59efd940bad62ede7c50b0d451a150b8d6a0eca642792a6"
+checksum = "95b4214b974f8f5206497153e89db90274e623f06b00bf4b9143eeb7735d975d"
 dependencies = [
+ "clap",
  "codspeed",
  "codspeed-divan-compat-macros",
  "codspeed-divan-compat-walltime",
+ "regex",
 ]
 
 [[package]]
 name = "codspeed-divan-compat-macros"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "058167258e819b16a4ba601fdfe270349ef191154758dbce122c62a698f70ba8"
+checksum = "a53f34a16cb70ce4fd9ad57e1db016f0718e434f34179ca652006443b9a39967"
 dependencies = [
  "divan-macros",
  "itertools 0.14.0",
@@ -565,9 +601,9 @@ dependencies = [
 
 [[package]]
 name = "codspeed-divan-compat-walltime"
-version = "3.0.5"
+version = "4.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48f9866ee3a4ef9d2868823ea5811886763af244f2df584ca247f49281c43f1f"
+checksum = "e8a5099050c8948dce488b8eaa2e68dc5cf571cb8f9fce99aaaecbdddb940bcd"
 dependencies = [
  "cfg-if",
  "clap",
@@ -818,6 +854,27 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "csv"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acdc4883a9c96732e4733212c01447ebd805833b7275a73ca3ee080fd77afdaf"
+dependencies = [
+ "csv-core",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
+[[package]]
+name = "csv-core"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d02f3b0da4c6504f86e9cd789d8dbafab48c2321be74e9987593de5a894d93d"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "ctrlc"
 version = "3.5.0"
@@ -1506,7 +1563,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
 dependencies = [
  "equivalent",
- "hashbrown 0.16.0",
+ "hashbrown 0.15.5",
  "serde",
  "serde_core",
 ]
@@ -1780,15 +1837,15 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.175"
+version = "0.2.177"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
+checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
 
 [[package]]
 name = "libcst"
-version = "1.8.4"
+version = "1.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "052ef5d9fc958a51aeebdf3713573b36c6fd6eed0bf0e60e204d2c0f8cf19b9f"
+checksum = "9d56bcd52d9b5e5f43e7fba20eb1f423ccb18c84cdf1cb506b8c1b95776b0b49"
 dependencies = [
  "annotate-snippets",
  "libcst_derive",
@@ -1801,14 +1858,24 @@ dependencies = [
 
 [[package]]
 name = "libcst_derive"
-version = "1.8.4"
+version = "1.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a91a751afee92cbdd59d4bc6754c7672712eec2d30a308f23de4e3287b2929cb"
+checksum = "3fcf5a725c4db703660124fe0edb98285f1605d0b87b7ee8684b699764a4f01a"
 dependencies = [
  "quote",
  "syn",
 ]
 
+[[package]]
+name = "libloading"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7c4b02199fee7c5d21a5ae7d8cfa79a6ef5bb2fc834d6e9058e89c825efdc55"
+dependencies = [
+ "cfg-if",
+ "windows-link 0.2.0",
+]
+
 [[package]]
 name = "libmimalloc-sys"
 version = "0.1.44"
@@ -1950,9 +2017,9 @@ checksum = "2f926ade0c4e170215ae43342bf13b9310a437609c81f29f86c5df6657582ef9"
 
 [[package]]
 name = "memchr"
-version = "2.7.5"
+version = "2.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
 
 [[package]]
 name = "memoffset"
@@ -2461,6 +2528,16 @@ dependencies = [
  "yansi",
 ]
 
+[[package]]
+name = "prettyplease"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "3.4.0"
@@ -2492,9 +2569,9 @@ dependencies = [
 
 [[package]]
 name = "pyproject-toml"
-version = "0.13.6"
+version = "0.13.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec768e063102b426e8962989758115e8659485124de9207bc365fab524125d65"
+checksum = "f6d755483ad14b49e76713b52285235461a5b4f73f17612353e11a5de36a5fd2"
 dependencies = [
  "indexmap",
  "pep440_rs",
@@ -2692,9 +2769,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.11.2"
+version = "1.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23d7fd106d8c02486a8d64e778353d1cffe08ce79ac2e82f540c86d0facf6912"
+checksum = "8b5288124840bee7b386bc413c487869b360b2b4ec421ea56425128692f2a82c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2704,9 +2781,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.10"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b9458fa0bfeeac22b5ca447c63aaf45f28439a709ccd244698632f9aa6394d6"
+checksum = "833eb9ce86d40ef33cb1306d8accf7bc8ec2bfea4355cbdebb3df68b40925cad"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2738,12 +2815,12 @@ dependencies = [
 
 [[package]]
 name = "ruff"
-version = "0.13.2"
+version = "0.14.1"
 dependencies = [
  "anyhow",
  "argfile",
  "assert_fs",
- "bincode 2.0.1",
+ "bincode",
  "bitflags 2.9.4",
  "cachedir",
  "clap",
@@ -2777,6 +2854,7 @@ dependencies = [
  "ruff_python_ast",
  "ruff_python_formatter",
  "ruff_python_parser",
+ "ruff_python_trivia",
  "ruff_server",
  "ruff_source_file",
  "ruff_text_size",
@@ -2994,7 +3072,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_linter"
-version = "0.13.2"
+version = "0.14.1"
 dependencies = [
  "aho-corasick",
  "anyhow",
@@ -3348,7 +3426,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_wasm"
-version = "0.13.2"
+version = "0.14.1"
 dependencies = [
  "console_error_panic_hook",
  "console_log",
@@ -3462,8 +3540,8 @@ checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 
 [[package]]
 name = "salsa"
-version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=29ab321b45d00daa4315fa2a06f7207759a8c87e#29ab321b45d00daa4315fa2a06f7207759a8c87e"
+version = "0.24.0"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=ef9f9329be6923acd050c8dddd172e3bc93e8051#ef9f9329be6923acd050c8dddd172e3bc93e8051"
 dependencies = [
  "boxcar",
  "compact_str",
@@ -3486,13 +3564,13 @@ dependencies = [
 
 [[package]]
 name = "salsa-macro-rules"
-version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=29ab321b45d00daa4315fa2a06f7207759a8c87e#29ab321b45d00daa4315fa2a06f7207759a8c87e"
+version = "0.24.0"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=ef9f9329be6923acd050c8dddd172e3bc93e8051#ef9f9329be6923acd050c8dddd172e3bc93e8051"
 
 [[package]]
 name = "salsa-macros"
-version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=29ab321b45d00daa4315fa2a06f7207759a8c87e#29ab321b45d00daa4315fa2a06f7207759a8c87e"
+version = "0.24.0"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=ef9f9329be6923acd050c8dddd172e3bc93e8051#ef9f9329be6923acd050c8dddd172e3bc93e8051"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4227,6 +4305,26 @@ dependencies = [
  "ty_python_semantic",
 ]
 
+[[package]]
+name = "ty_completion_eval"
+version = "0.0.0"
+dependencies = [
+ "anyhow",
+ "bstr",
+ "clap",
+ "csv",
+ "regex",
+ "ruff_db",
+ "ruff_text_size",
+ "serde",
+ "tempfile",
+ "toml",
+ "ty_ide",
+ "ty_project",
+ "ty_python_semantic",
+ "walkdir",
+]
+
 [[package]]
 name = "ty_ide"
 version = "0.0.0"
@@ -4401,6 +4499,7 @@ dependencies = [
  "colored 3.0.0",
  "insta",
  "memchr",
+ "path-slash",
  "regex",
  "ruff_db",
  "ruff_index",
@@ -4449,6 +4548,7 @@ dependencies = [
  "ruff_source_file",
  "ruff_text_size",
  "serde-wasm-bindgen",
+ "tracing",
  "ty_ide",
  "ty_project",
  "ty_python_semantic",

Cargo.toml

@@ -43,6 +43,7 @@ ruff_workspace = { path = "crates/ruff_workspace" }
 
 ty = { path = "crates/ty" }
 ty_combine = { path = "crates/ty_combine" }
+ty_completion_eval = { path = "crates/ty_completion_eval" }
 ty_ide = { path = "crates/ty_ide" }
 ty_project = { path = "crates/ty_project", default-features = false }
 ty_python_semantic = { path = "crates/ty_python_semantic" }
@@ -69,8 +70,9 @@ camino = { version = "1.1.7" }
 clap = { version = "4.5.3", features = ["derive"] }
 clap_complete_command = { version = "0.6.0" }
 clearscreen = { version = "4.0.0" }
-divan = { package = "codspeed-divan-compat", version = "3.0.2" }
-codspeed-criterion-compat = { version = "3.0.2", default-features = false }
+csv = { version = "1.3.1" }
+divan = { package = "codspeed-divan-compat", version = "4.0.4" }
+codspeed-criterion-compat = { version = "4.0.4", default-features = false }
 colored = { version = "3.0.0" }
 console_error_panic_hook = { version = "0.1.7" }
 console_log = { version = "1.0.0" }
@@ -144,7 +146,7 @@ regex-automata = { version = "0.4.9" }
 rustc-hash = { version = "2.0.0" }
 rustc-stable-hash = { version = "0.1.2" }
 # When updating salsa, make sure to also update the revision in `fuzz/Cargo.toml`
-salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "29ab321b45d00daa4315fa2a06f7207759a8c87e", default-features = false, features = [
+salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "ef9f9329be6923acd050c8dddd172e3bc93e8051", default-features = false, features = [
     "compact_str",
     "macros",
     "salsa_unstable",
@@ -203,7 +205,7 @@ wild = { version = "2" }
 zip = { version = "0.6.6", default-features = false }
 
 [workspace.metadata.cargo-shear]
-ignored = ["getrandom", "ruff_options_metadata", "uuid", "get-size2"]
+ignored = ["getrandom", "ruff_options_metadata", "uuid", "get-size2", "ty_completion_eval"]
 
 
 [workspace.lints.rust]
@@ -266,12 +268,7 @@ large_stack_arrays = "allow"
 
 
 [profile.release]
-# Note that we set these explicitly, and these values
-# were chosen based on a trade-off between compile times
-# and runtime performance[1].
-#
-# [1]: https://github.com/astral-sh/ruff/pull/9031
-lto = "thin"
+lto = "fat"
 codegen-units = 16
 
 # Some crates don't change as much but benefit more from
@@ -281,6 +278,8 @@ codegen-units = 16
 codegen-units = 1
 [profile.release.package.ruff_python_ast]
 codegen-units = 1
+[profile.release.package.salsa]
+codegen-units = 1
 
 [profile.dev.package.insta]
 opt-level = 3
@@ -296,11 +295,30 @@ opt-level = 3
 [profile.dev.package.ruff_python_parser]
 opt-level = 1
 
+# This profile is meant to mimic the `release` profile as closely as
+# possible, but using settings that are more beneficial for iterative
+# development. That is, the `release` profile is intended for actually
+# building the release, where as `profiling` is meant for building ty/ruff
+# for running benchmarks.
+#
+# The main differences here are to avoid stripping debug information
+# and disabling fat lto. This does result in a mismatch between our release
+# configuration and our benchmarking configuration, which is unfortunate.
+# But compile times with `lto = fat` are completely untenable.
+#
+# This setup does risk that we are measuring something in benchmarks
+# that we aren't shipping, but in order to make those two the same, we'd
+# either need to make compile times way worse for development, or take
+# a hit to binary size and a slight hit to runtime performance in our
+# release builds.
+#
 # Use the `--profile profiling` flag to show symbols in release mode.
 # e.g. `cargo build --profile profiling`
 [profile.profiling]
 inherits = "release"
-debug = 1
+strip = false
+debug = "full"
+lto = false
 
 # The profile that 'cargo dist' will build with.
 [profile.dist]

README.md

@@ -28,7 +28,7 @@ An extremely fast Python linter and code formatter, written in Rust.
 - ⚡️ 10-100x faster than existing linters (like Flake8) and formatters (like Black)
 - 🐍 Installable via `pip`
 - 🛠️ `pyproject.toml` support
-- 🤝 Python 3.13 compatibility
+- 🤝 Python 3.14 compatibility
 - ⚖️ Drop-in parity with [Flake8](https://docs.astral.sh/ruff/faq/#how-does-ruffs-linter-compare-to-flake8), isort, and [Black](https://docs.astral.sh/ruff/faq/#how-does-ruffs-formatter-compare-to-black)
 - 📦 Built-in caching, to avoid re-analyzing unchanged files
 - 🔧 Fix support, for automatic error correction (e.g., automatically remove unused imports)
@@ -148,8 +148,8 @@ curl -LsSf https://astral.sh/ruff/install.sh | sh
 powershell -c "irm https://astral.sh/ruff/install.ps1 | iex"
 
 # For a specific version.
-curl -LsSf https://astral.sh/ruff/0.13.2/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.13.2/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.14.1/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.14.1/install.ps1 | iex"
 ```
 
 You can also install Ruff via [Homebrew](https://formulae.brew.sh/formula/ruff), [Conda](https://anaconda.org/conda-forge/ruff),
@@ -182,7 +182,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com/) hook via [`ruff
 ```yaml
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
-  rev: v0.13.2
+  rev: v0.14.1
   hooks:
     # Run the linter.
     - id: ruff-check

_typos.toml

@@ -31,6 +31,7 @@ extend-ignore-re = [
     "typ",
     # TODO: Remove this once the `TYP` redirects are removed from `rule_redirects.rs`
     "TYP",
+    "ntBre"
 ]
 
 [default.extend-identifiers]

changelogs/0.13.x.md

@@ -0,0 +1,263 @@
+# Changelog 0.13.x
+
+## 0.13.0
+
+Check out the [blog post](https://astral.sh/blog/ruff-v0.13.0) for a migration
+guide and overview of the changes!
+
+### Breaking changes
+
+- **Several rules can now add `from __future__ import annotations` automatically**
+
+    `TC001`, `TC002`, `TC003`, `RUF013`, and `UP037` now add `from __future__ import annotations` as part of their fixes when the
+    `lint.future-annotations` setting is enabled. This allows the rules to move
+    more imports into `TYPE_CHECKING` blocks (`TC001`, `TC002`, and `TC003`),
+    use PEP 604 union syntax on Python versions before 3.10 (`RUF013`), and
+    unquote more annotations (`UP037`).
+
+- **Full module paths are now used to verify first-party modules**
+
+    Ruff now checks that the full path to a module exists on disk before
+    categorizing it as a first-party import. This change makes first-party
+    import detection more accurate, helping to avoid false positives on local
+    directories with the same name as a third-party dependency, for example. See
+    the [FAQ
+    section](https://docs.astral.sh/ruff/faq/#how-does-ruff-determine-which-of-my-imports-are-first-party-third-party-etc) on import categorization for more details.
+
+- **Deprecated rules must now be selected by exact rule code**
+
+    Ruff will no longer activate deprecated rules selected by their group name
+    or prefix. As noted below, the two remaining deprecated rules were also
+    removed in this release, so this won't affect any current rules, but it will
+    still affect any deprecations in the future.
+
+- **The deprecated macOS configuration directory fallback has been removed**
+
+    Ruff will no longer look for a user-level configuration file at
+    `~/Library/Application Support/ruff/ruff.toml` on macOS. This feature was
+    deprecated in v0.5 in favor of using the [XDG
+    specification](https://specifications.freedesktop.org/basedir-spec/latest/)
+    (usually resolving to `~/.config/ruff/ruff.toml`), like on Linux. The
+    fallback and accompanying deprecation warning have now been removed.
+
+### Removed Rules
+
+The following rules have been removed:
+
+- [`pandas-df-variable-name`](https://docs.astral.sh/ruff/rules/pandas-df-variable-name) (`PD901`)
+- [`non-pep604-isinstance`](https://docs.astral.sh/ruff/rules/non-pep604-isinstance) (`UP038`)
+
+### Stabilization
+
+The following rules have been stabilized and are no longer in preview:
+
+- [`airflow-dag-no-schedule-argument`](https://docs.astral.sh/ruff/rules/airflow-dag-no-schedule-argument)
+    (`AIR002`)
+- [`airflow3-removal`](https://docs.astral.sh/ruff/rules/airflow3-removal) (`AIR301`)
+- [`airflow3-moved-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-moved-to-provider)
+    (`AIR302`)
+- [`airflow3-suggested-update`](https://docs.astral.sh/ruff/rules/airflow3-suggested-update)
+    (`AIR311`)
+- [`airflow3-suggested-to-move-to-provider`](https://docs.astral.sh/ruff/rules/airflow3-suggested-to-move-to-provider)
+    (`AIR312`)
+- [`long-sleep-not-forever`](https://docs.astral.sh/ruff/rules/long-sleep-not-forever) (`ASYNC116`)
+- [`f-string-number-format`](https://docs.astral.sh/ruff/rules/f-string-number-format) (`FURB116`)
+- [`os-symlink`](https://docs.astral.sh/ruff/rules/os-symlink) (`PTH211`)
+- [`generic-not-last-base-class`](https://docs.astral.sh/ruff/rules/generic-not-last-base-class)
+    (`PYI059`)
+- [`redundant-none-literal`](https://docs.astral.sh/ruff/rules/redundant-none-literal) (`PYI061`)
+- [`pytest-raises-ambiguous-pattern`](https://docs.astral.sh/ruff/rules/pytest-raises-ambiguous-pattern)
+    (`RUF043`)
+- [`unused-unpacked-variable`](https://docs.astral.sh/ruff/rules/unused-unpacked-variable)
+    (`RUF059`)
+- [`useless-class-metaclass-type`](https://docs.astral.sh/ruff/rules/useless-class-metaclass-type)
+    (`UP050`)
+
+The following behaviors have been stabilized:
+
+- [`assert-raises-exception`](https://docs.astral.sh/ruff/rules/assert-raises-exception) (`B017`)
+    now checks for direct calls to `unittest.TestCase.assert_raises` and `pytest.raises` instead of
+    only the context manager forms.
+- [`missing-trailing-comma`](https://docs.astral.sh/ruff/rules/missing-trailing-comma) (`COM812`)
+    and [`prohibited-trailing-comma`](https://docs.astral.sh/ruff/rules/prohibited-trailing-comma)
+    (`COM819`) now check for trailing commas in PEP 695 type parameter lists.
+- [`raw-string-in-exception`](https://docs.astral.sh/ruff/rules/raw-string-in-exception) (`EM101`)
+    now also checks for byte strings in exception messages.
+- [`invalid-mock-access`](https://docs.astral.sh/ruff/rules/invalid-mock-access) (`PGH005`) now
+    checks for `AsyncMock` methods like `not_awaited` in addition to the synchronous variants.
+- [`useless-import-alias`](https://docs.astral.sh/ruff/rules/useless-import-alias) (`PLC0414`) no
+    longer applies to `__init__.py` files, where it conflicted with one of the suggested fixes for
+    [`unused-import`](https://docs.astral.sh/ruff/rules/unused-import) (`F401`).
+- [`bidirectional-unicode`](https://docs.astral.sh/ruff/rules/bidirectional-unicode) (`PLE2502`) now
+    also checks for U+061C (Arabic Letter Mark).
+- The fix for
+    [`multiple-with-statements`](https://docs.astral.sh/ruff/rules/multiple-with-statements)
+    (`SIM117`) is now marked as always safe.
+
+### Preview features
+
+- \[`pyupgrade`\] Enable `UP043` in stub files ([#20027](https://github.com/astral-sh/ruff/pull/20027))
+
+### Bug fixes
+
+- \[`pyupgrade`\] Apply `UP008` only when the `__class__` cell exists ([#19424](https://github.com/astral-sh/ruff/pull/19424))
+- \[`ruff`\] Fix empty f-string detection in `in-empty-collection` (`RUF060`) ([#20249](https://github.com/astral-sh/ruff/pull/20249))
+
+### Server
+
+- Add support for using uv as an alternative formatter backend ([#19665](https://github.com/astral-sh/ruff/pull/19665))
+
+### Documentation
+
+- \[`pep8-naming`\] Fix formatting of `__all__` (`N816`) ([#20301](https://github.com/astral-sh/ruff/pull/20301))
+
+## 0.13.1
+
+Released on 2025-09-18.
+
+### Preview features
+
+- \[`flake8-simplify`\] Detect unnecessary `None` default for additional key expression types (`SIM910`) ([#20343](https://github.com/astral-sh/ruff/pull/20343))
+- \[`flake8-use-pathlib`\] Add fix for `PTH123` ([#20169](https://github.com/astral-sh/ruff/pull/20169))
+- \[`flake8-use-pathlib`\] Fix `PTH101`, `PTH104`, `PTH105`, `PTH121` fixes ([#20143](https://github.com/astral-sh/ruff/pull/20143))
+- \[`flake8-use-pathlib`\] Make `PTH111` fix unsafe because it can change behavior ([#20215](https://github.com/astral-sh/ruff/pull/20215))
+- \[`pycodestyle`\] Fix `E301` to only trigger for functions immediately within a class ([#19768](https://github.com/astral-sh/ruff/pull/19768))
+- \[`refurb`\] Mark `single-item-membership-test` fix as always unsafe (`FURB171`) ([#20279](https://github.com/astral-sh/ruff/pull/20279))
+
+### Bug fixes
+
+- Handle t-strings for token-based rules and suppression comments ([#20357](https://github.com/astral-sh/ruff/pull/20357))
+- \[`flake8-bandit`\] Fix truthiness: dict-only `**` displays not truthy for `shell` (`S602`, `S604`, `S609`) ([#20177](https://github.com/astral-sh/ruff/pull/20177))
+- \[`flake8-simplify`\] Fix diagnostic to show correct method name for `str.rsplit` calls (`SIM905`) ([#20459](https://github.com/astral-sh/ruff/pull/20459))
+- \[`flynt`\] Use triple quotes for joined raw strings with newlines (`FLY002`) ([#20197](https://github.com/astral-sh/ruff/pull/20197))
+- \[`pyupgrade`\] Fix false positive when class name is shadowed by local variable (`UP008`) ([#20427](https://github.com/astral-sh/ruff/pull/20427))
+- \[`pyupgrade`\] Prevent infinite loop with `I002` and `UP026` ([#20327](https://github.com/astral-sh/ruff/pull/20327))
+- \[`ruff`\] Recognize t-strings, generators, and lambdas in `invalid-index-type` (`RUF016`) ([#20213](https://github.com/astral-sh/ruff/pull/20213))
+
+### Rule changes
+
+- \[`RUF102`\] Respect rule redirects in invalid rule code detection ([#20245](https://github.com/astral-sh/ruff/pull/20245))
+- \[`flake8-bugbear`\] Mark the fix for `unreliable-callable-check` as always unsafe (`B004`) ([#20318](https://github.com/astral-sh/ruff/pull/20318))
+- \[`ruff`\] Allow dataclass attribute value instantiation from nested frozen dataclass (`RUF009`) ([#20352](https://github.com/astral-sh/ruff/pull/20352))
+
+### CLI
+
+- Add fixes to `output-format=sarif` ([#20300](https://github.com/astral-sh/ruff/pull/20300))
+- Treat panics as fatal diagnostics, sort panics last ([#20258](https://github.com/astral-sh/ruff/pull/20258))
+
+### Documentation
+
+- \[`ruff`\] Add `analyze.string-imports-min-dots` to settings ([#20375](https://github.com/astral-sh/ruff/pull/20375))
+- Update README.md with Albumentations new repository URL ([#20415](https://github.com/astral-sh/ruff/pull/20415))
+
+### Other changes
+
+- Bump MSRV to Rust 1.88 ([#20470](https://github.com/astral-sh/ruff/pull/20470))
+- Enable inline noqa for multiline strings in playground ([#20442](https://github.com/astral-sh/ruff/pull/20442))
+
+### Contributors
+
+- [@chirizxc](https://github.com/chirizxc)
+- [@danparizher](https://github.com/danparizher)
+- [@IDrokin117](https://github.com/IDrokin117)
+- [@amyreese](https://github.com/amyreese)
+- [@AlexWaygood](https://github.com/AlexWaygood)
+- [@dylwil3](https://github.com/dylwil3)
+- [@njhearp](https://github.com/njhearp)
+- [@woodruffw](https://github.com/woodruffw)
+- [@dcreager](https://github.com/dcreager)
+- [@TaKO8Ki](https://github.com/TaKO8Ki)
+- [@BurntSushi](https://github.com/BurntSushi)
+- [@salahelfarissi](https://github.com/salahelfarissi)
+- [@MichaReiser](https://github.com/MichaReiser)
+
+## 0.13.2
+
+Released on 2025-09-25.
+
+### Preview features
+
+- \[`flake8-async`\] Implement `blocking-path-method` (`ASYNC240`) ([#20264](https://github.com/astral-sh/ruff/pull/20264))
+- \[`flake8-bugbear`\] Implement `map-without-explicit-strict` (`B912`) ([#20429](https://github.com/astral-sh/ruff/pull/20429))
+- \[`flake8-bultins`\] Detect class-scope builtin shadowing in decorators, default args, and attribute initializers (`A003`) ([#20178](https://github.com/astral-sh/ruff/pull/20178))
+- \[`ruff`\] Implement `logging-eager-conversion` (`RUF065`) ([#19942](https://github.com/astral-sh/ruff/pull/19942))
+- Include `.pyw` files by default when linting and formatting ([#20458](https://github.com/astral-sh/ruff/pull/20458))
+
+### Bug fixes
+
+- Deduplicate input paths ([#20105](https://github.com/astral-sh/ruff/pull/20105))
+- \[`flake8-comprehensions`\] Preserve trailing commas for single-element lists (`C409`) ([#19571](https://github.com/astral-sh/ruff/pull/19571))
+- \[`flake8-pyi`\] Avoid syntax error from conflict with `PIE790` (`PYI021`) ([#20010](https://github.com/astral-sh/ruff/pull/20010))
+- \[`flake8-simplify`\] Correct fix for positive `maxsplit` without separator (`SIM905`) ([#20056](https://github.com/astral-sh/ruff/pull/20056))
+- \[`pyupgrade`\] Fix `UP008` not to apply when `__class__` is a local variable ([#20497](https://github.com/astral-sh/ruff/pull/20497))
+- \[`ruff`\] Fix `B004` to skip invalid `hasattr`/`getattr` calls ([#20486](https://github.com/astral-sh/ruff/pull/20486))
+- \[`ruff`\] Replace `-nan` with `nan` when using the value to construct a `Decimal` (`FURB164` ) ([#20391](https://github.com/astral-sh/ruff/pull/20391))
+
+### Documentation
+
+- Add 'Finding ways to help' to CONTRIBUTING.md ([#20567](https://github.com/astral-sh/ruff/pull/20567))
+- Update import path to `ruff-wasm-web` ([#20539](https://github.com/astral-sh/ruff/pull/20539))
+- \[`flake8-bandit`\] Clarify the supported hashing functions (`S324`) ([#20534](https://github.com/astral-sh/ruff/pull/20534))
+
+### Other changes
+
+- \[`playground`\] Allow hover quick fixes to appear for overlapping diagnostics ([#20527](https://github.com/astral-sh/ruff/pull/20527))
+- \[`playground`\] Fix non‑BMP code point handling in quick fixes and markers ([#20526](https://github.com/astral-sh/ruff/pull/20526))
+
+### Contributors
+
+- [@BurntSushi](https://github.com/BurntSushi)
+- [@mtshiba](https://github.com/mtshiba)
+- [@second-ed](https://github.com/second-ed)
+- [@danparizher](https://github.com/danparizher)
+- [@ShikChen](https://github.com/ShikChen)
+- [@PieterCK](https://github.com/PieterCK)
+- [@GDYendell](https://github.com/GDYendell)
+- [@RazerM](https://github.com/RazerM)
+- [@TaKO8Ki](https://github.com/TaKO8Ki)
+- [@amyreese](https://github.com/amyreese)
+- [@ntbre](https://github.com/ntBre)
+- [@MichaReiser](https://github.com/MichaReiser)
+
+## 0.13.3
+
+Released on 2025-10-02.
+
+### Preview features
+
+- Display diffs for `ruff format --check` and add support for different output formats ([#20443](https://github.com/astral-sh/ruff/pull/20443))
+- \[`pyflakes`\] Handle some common submodule import situations for `unused-import` (`F401`) ([#20200](https://github.com/astral-sh/ruff/pull/20200))
+- \[`ruff`\] Do not flag `%r` + `repr()` combinations (`RUF065`) ([#20600](https://github.com/astral-sh/ruff/pull/20600))
+
+### Bug fixes
+
+- \[`cli`\] Add conflict between `--add-noqa` and `--diff` options ([#20642](https://github.com/astral-sh/ruff/pull/20642))
+- \[`pylint`\] Exempt required imports from `PLR0402` ([#20381](https://github.com/astral-sh/ruff/pull/20381))
+- \[`pylint`\] Fix missing `max-nested-blocks` in settings display ([#20574](https://github.com/astral-sh/ruff/pull/20574))
+- \[`pyupgrade`\] Prevent infinite loop with `I002` and `UP026` ([#20634](https://github.com/astral-sh/ruff/pull/20634))
+
+### Rule changes
+
+- \[`flake8-simplify`\] Improve help message clarity (`SIM105`) ([#20548](https://github.com/astral-sh/ruff/pull/20548))
+
+### Documentation
+
+- Add the *The Basics* title back to CONTRIBUTING.md ([#20624](https://github.com/astral-sh/ruff/pull/20624))
+- Fixed documentation for try_consider_else ([#20587](https://github.com/astral-sh/ruff/pull/20587))
+- \[`isort`\] Clarify dependency between `order-by-type` and `case-sensitive` settings ([#20559](https://github.com/astral-sh/ruff/pull/20559))
+- \[`pylint`\] Clarify fix safety to include left-hand hashability (`PLR6201`) ([#20518](https://github.com/astral-sh/ruff/pull/20518))
+
+### Other changes
+
+- \[`playground`\] Fix quick fixes for empty ranges in playground ([#20599](https://github.com/astral-sh/ruff/pull/20599))
+
+### Contributors
+
+- [@TaKO8Ki](https://github.com/TaKO8Ki)
+- [@ntBre](https://github.com/ntBre)
+- [@dylwil3](https://github.com/dylwil3)
+- [@MichaReiser](https://github.com/MichaReiser)
+- [@danparizher](https://github.com/danparizher)
+- [@LilMonk](https://github.com/LilMonk)
+- [@mgiovani](https://github.com/mgiovani)
+- [@IDrokin117](https://github.com/IDrokin117)

crates/ruff/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.13.2"
+version = "0.14.1"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }
@@ -72,6 +72,7 @@ dunce = { workspace = true }
 indoc = { workspace = true }
 insta = { workspace = true, features = ["filters", "json"] }
 insta-cmd = { workspace = true }
+ruff_python_trivia = { workspace = true }
 tempfile = { workspace = true }
 test-case = { workspace = true }
 

crates/ruff/src/diagnostics.rs

@@ -13,7 +13,6 @@ use log::{debug, warn};
 use ruff_db::diagnostic::Diagnostic;
 use ruff_linter::codes::Rule;
 use ruff_linter::linter::{FixTable, FixerResult, LinterResult, ParseSource, lint_fix, lint_only};
-use ruff_linter::message::create_syntax_error_diagnostic;
 use ruff_linter::package::PackageRoot;
 use ruff_linter::pyproject_toml::lint_pyproject_toml;
 use ruff_linter::settings::types::UnsafeFixes;
@@ -103,11 +102,7 @@ impl Diagnostics {
                 let name = path.map_or_else(|| "-".into(), Path::to_string_lossy);
                 let dummy = SourceFileBuilder::new(name, "").finish();
                 Self::new(
-                    vec![create_syntax_error_diagnostic(
-                        dummy,
-                        err,
-                        TextRange::default(),
-                    )],
+                    vec![Diagnostic::invalid_syntax(dummy, err, TextRange::default())],
                     FxHashMap::default(),
                 )
             }

crates/ruff/src/main.rs

@@ -1,6 +1,7 @@
 use std::io::Write;
 use std::process::ExitCode;
 
+use anyhow::Context;
 use clap::Parser;
 use colored::Colorize;
 
@@ -39,39 +40,46 @@ pub fn main() -> ExitCode {
     }
 
     let args = wild::args_os();
-    let args = argfile::expand_args_from(args, argfile::parse_fromfile, argfile::PREFIX).unwrap();
+    let args = match argfile::expand_args_from(args, argfile::parse_fromfile, argfile::PREFIX)
+        .context("Failed to read CLI arguments from files")
+    {
+        Ok(args) => args,
+        Err(err) => return report_error(&err),
+    };
 
     let args = Args::parse_from(args);
 
     match run(args) {
         Ok(code) => code.into(),
-        Err(err) => {
-            {
-                // Exit "gracefully" on broken pipe errors.
-                //
-                // See: https://github.com/BurntSushi/ripgrep/blob/bf63fe8f258afc09bae6caa48f0ae35eaf115005/crates/core/main.rs#L47C1-L61C14
-                for cause in err.chain() {
-                    if let Some(ioerr) = cause.downcast_ref::<std::io::Error>() {
-                        if ioerr.kind() == std::io::ErrorKind::BrokenPipe {
-                            return ExitCode::from(0);
-                        }
-                    }
-                }
-
-                // Use `writeln` instead of `eprintln` to avoid panicking when the stderr pipe is broken.
-                let mut stderr = std::io::stderr().lock();
-
-                // This communicates that this isn't a linter error but ruff itself hard-errored for
-                // some reason (e.g. failed to resolve the configuration)
-                writeln!(stderr, "{}", "ruff failed".red().bold()).ok();
-                // Currently we generally only see one error, but e.g. with io errors when resolving
-                // the configuration it is help to chain errors ("resolving configuration failed" ->
-                // "failed to read file: subdir/pyproject.toml")
-                for cause in err.chain() {
-                    writeln!(stderr, "  {} {cause}", "Cause:".bold()).ok();
-                }
-            }
-            ExitStatus::Error.into()
-        }
+        Err(err) => report_error(&err),
     }
 }
+
+fn report_error(err: &anyhow::Error) -> ExitCode {
+    {
+        // Exit "gracefully" on broken pipe errors.
+        //
+        // See: https://github.com/BurntSushi/ripgrep/blob/bf63fe8f258afc09bae6caa48f0ae35eaf115005/crates/core/main.rs#L47C1-L61C14
+        for cause in err.chain() {
+            if let Some(ioerr) = cause.downcast_ref::<std::io::Error>() {
+                if ioerr.kind() == std::io::ErrorKind::BrokenPipe {
+                    return ExitCode::from(0);
+                }
+            }
+        }
+
+        // Use `writeln` instead of `eprintln` to avoid panicking when the stderr pipe is broken.
+        let mut stderr = std::io::stderr().lock();
+
+        // This communicates that this isn't a linter error but ruff itself hard-errored for
+        // some reason (e.g. failed to resolve the configuration)
+        writeln!(stderr, "{}", "ruff failed".red().bold()).ok();
+        // Currently we generally only see one error, but e.g. with io errors when resolving
+        // the configuration it is help to chain errors ("resolving configuration failed" ->
+        // "failed to read file: subdir/pyproject.toml")
+        for cause in err.chain() {
+            writeln!(stderr, "  {} {cause}", "Cause:".bold()).ok();
+        }
+    }
+    ExitStatus::Error.into()
+}

crates/ruff/tests/cli/main.rs

@@ -0,0 +1,177 @@
+//! Test fixture utilities for ruff CLI tests
+//!
+//! The core concept is borrowed from ty/tests/cli/main.rs and can be extended
+//! with more functionality from there in the future if needed.
+
+#![cfg(not(target_family = "wasm"))]
+
+use anyhow::{Context as _, Result};
+use insta::internals::SettingsBindDropGuard;
+use insta_cmd::get_cargo_bin;
+use std::{
+    fs,
+    path::{Path, PathBuf},
+    process::Command,
+};
+use tempfile::TempDir;
+
+mod lint;
+
+const BIN_NAME: &str = "ruff";
+
+/// Creates a regex filter for replacing temporary directory paths in snapshots
+pub(crate) fn tempdir_filter(path: impl AsRef<str>) -> String {
+    format!(r"{}[\\/]?", regex::escape(path.as_ref()))
+}
+
+/// A test fixture for running ruff CLI tests with temporary directories and files.
+///
+/// This fixture provides:
+/// - Temporary directory management
+/// - File creation utilities
+/// - Proper snapshot filtering for cross-platform compatibility
+/// - Pre-configured ruff command creation
+///
+/// # Example
+///
+/// ```rust,no_run
+/// use crate::common::RuffTestFixture;
+///
+/// let fixture = RuffTestFixture::with_file("ruff.toml", "select = ['E']")?;
+/// let output = fixture.command().args(["check", "."]).output()?;
+/// ```
+pub(crate) struct CliTest {
+    _temp_dir: TempDir,
+    _settings_scope: SettingsBindDropGuard,
+    project_dir: PathBuf,
+}
+
+impl CliTest {
+    /// Creates a new test fixture with an empty temporary directory.
+    ///
+    /// This sets up:
+    /// - A temporary directory that's automatically cleaned up
+    /// - Insta snapshot filters for cross-platform path compatibility
+    /// - Environment isolation for consistent test behavior
+    pub(crate) fn new() -> Result<Self> {
+        Self::with_settings(|_, settings| settings)
+    }
+
+    pub(crate) fn with_settings(
+        setup_settings: impl FnOnce(&Path, insta::Settings) -> insta::Settings,
+    ) -> Result<Self> {
+        let temp_dir = TempDir::new()?;
+
+        // Canonicalize the tempdir path because macOS uses symlinks for tempdirs
+        // and that doesn't play well with our snapshot filtering.
+        // Simplify with dunce because otherwise we get UNC paths on Windows.
+        let project_dir = dunce::simplified(
+            &temp_dir
+                .path()
+                .canonicalize()
+                .context("Failed to canonicalize project path")?,
+        )
+        .to_path_buf();
+
+        let mut settings = setup_settings(&project_dir, insta::Settings::clone_current());
+
+        settings.add_filter(&tempdir_filter(project_dir.to_str().unwrap()), "[TMP]/");
+        settings.add_filter(r#"\\([\w&&[^nr"]]\w|\s|\.)"#, "/$1");
+        settings.add_filter(r"(Panicked at) [^:]+:\d+:\d+", "$1 <location>");
+        settings.add_filter(ruff_linter::VERSION, "[VERSION]");
+        settings.add_filter(
+            r#"The system cannot find the file specified."#,
+            "No such file or directory",
+        );
+
+        let settings_scope = settings.bind_to_scope();
+
+        Ok(Self {
+            project_dir,
+            _temp_dir: temp_dir,
+            _settings_scope: settings_scope,
+        })
+    }
+
+    /// Creates a test fixture with a single file.
+    ///
+    /// # Arguments
+    ///
+    /// * `path` - The relative path for the file
+    /// * `content` - The content to write to the file
+    ///
+    /// # Example
+    ///
+    /// ```rust,no_run
+    /// let fixture = RuffTestFixture::with_file("ruff.toml", "select = ['E']")?;
+    /// ```
+    pub(crate) fn with_file(path: impl AsRef<Path>, content: &str) -> Result<Self> {
+        let fixture = Self::new()?;
+        fixture.write_file(path, content)?;
+        Ok(fixture)
+    }
+
+    /// Ensures that the parent directory of a path exists.
+    fn ensure_parent_directory(path: &Path) -> Result<()> {
+        if let Some(parent) = path.parent() {
+            fs::create_dir_all(parent)
+                .with_context(|| format!("Failed to create directory `{}`", parent.display()))?;
+        }
+        Ok(())
+    }
+
+    /// Writes a file to the test directory.
+    ///
+    /// Parent directories are created automatically if they don't exist.
+    /// Content is dedented to remove common leading whitespace for cleaner test code.
+    ///
+    /// # Arguments
+    ///
+    /// * `path` - The relative path for the file
+    /// * `content` - The content to write to the file
+    pub(crate) fn write_file(&self, path: impl AsRef<Path>, content: &str) -> Result<()> {
+        let path = path.as_ref();
+        let file_path = self.project_dir.join(path);
+
+        Self::ensure_parent_directory(&file_path)?;
+
+        let content = ruff_python_trivia::textwrap::dedent(content);
+        fs::write(&file_path, content.as_ref())
+            .with_context(|| format!("Failed to write file `{}`", file_path.display()))?;
+
+        Ok(())
+    }
+
+    /// Returns the path to the test directory root.
+    pub(crate) fn root(&self) -> &Path {
+        &self.project_dir
+    }
+
+    /// Creates a pre-configured ruff command for testing.
+    ///
+    /// The command is set up with:
+    /// - The correct ruff binary path
+    /// - Working directory set to the test directory
+    /// - Clean environment variables for consistent behavior
+    ///
+    /// You can chain additional arguments and options as needed.
+    ///
+    /// # Example
+    ///
+    /// ```rust,no_run
+    /// let output = fixture
+    ///     .command()
+    ///     .args(["check", "--select", "E"])
+    ///     .arg(".")
+    ///     .output()?;
+    /// ```
+    pub(crate) fn command(&self) -> Command {
+        let mut command = Command::new(get_cargo_bin(BIN_NAME));
+        command.current_dir(&self.project_dir);
+
+        // Unset all environment variables because they can affect test behavior.
+        command.env_clear();
+
+        command
+    }
+}

crates/ruff/tests/cli/snapshots/cli__lint__output_format_sarif.snap

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:
@@ -12,6 +12,7 @@ info:
     - "--target-version"
     - py39
     - input.py
+snapshot_kind: text
 ---
 success: false
 exit_code: 1

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_extend_from_shared_config.snap

@@ -0,0 +1,288 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - test.py
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/test.py"
+Settings path: "[TMP]/ruff.toml"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.10
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.10
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.10
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool.snap

@@ -0,0 +1,290 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - "--select"
+    - UP007
+    - test.py
+    - "-"
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/test.py"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.11
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.11
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.11
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool_preview_enabled.snap

@@ -0,0 +1,292 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--preview"
+    - "--show-settings"
+    - "--select"
+    - UP007
+    - test.py
+    - "-"
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/test.py"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.pyw",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.11
+linter.per_file_target_version = {}
+linter.preview = enabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.11
+formatter.per_file_target_version = {}
+formatter.preview = enabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = enabled
+analyze.target_version = 3.11
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_no_tool_target_version_override.snap

@@ -0,0 +1,292 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - "--select"
+    - UP007
+    - "--target-version"
+    - py310
+    - test.py
+    - "-"
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/test.py"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.10
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.10
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.10
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_pyproject_toml_above.snap

@@ -0,0 +1,289 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - "--select"
+    - UP007
+    - foo/test.py
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/foo/test.py"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.11
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.11
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.11
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_pyproject_toml_above_with_tool.snap

@@ -0,0 +1,289 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - "--select"
+    - UP007
+    - foo/test.py
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/foo/test.py"
+
+# General Settings
+cache_dir = "[TMP]/foo/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/foo"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/foo"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.10
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/foo",
+	"[TMP]/foo/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.10
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.10
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_above-2.snap

@@ -0,0 +1,287 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - test.py
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/foo/test.py"
+Settings path: "[TMP]/ruff.toml"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = none
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.10
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.10
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_above.snap

@@ -0,0 +1,287 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - "--show-settings"
+    - foo/test.py
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/foo/test.py"
+Settings path: "[TMP]/ruff.toml"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = none
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.10
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.10
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/cli/snapshots/cli__lint__requires_python_ruff_toml_no_target_fallback.snap

@@ -0,0 +1,288 @@
+---
+source: crates/ruff/tests/cli/lint.rs
+info:
+  program: ruff
+  args:
+    - check
+    - "--no-cache"
+    - "--output-format"
+    - concise
+    - test.py
+    - "--show-settings"
+snapshot_kind: text
+---
+success: true
+exit_code: 0
+----- stdout -----
+Resolved settings for: "[TMP]/test.py"
+Settings path: "[TMP]/ruff.toml"
+
+# General Settings
+cache_dir = "[TMP]/.ruff_cache"
+fix = false
+fix_only = false
+output_format = concise
+show_fixes = false
+unsafe_fixes = hint
+
+# File Resolver Settings
+file_resolver.exclude = [
+	".bzr",
+	".direnv",
+	".eggs",
+	".git",
+	".git-rewrite",
+	".hg",
+	".ipynb_checkpoints",
+	".mypy_cache",
+	".nox",
+	".pants.d",
+	".pyenv",
+	".pytest_cache",
+	".pytype",
+	".ruff_cache",
+	".svn",
+	".tox",
+	".venv",
+	".vscode",
+	"__pypackages__",
+	"_build",
+	"buck-out",
+	"dist",
+	"node_modules",
+	"site-packages",
+	"venv",
+]
+file_resolver.extend_exclude = []
+file_resolver.force_exclude = false
+file_resolver.include = [
+	"*.py",
+	"*.pyi",
+	"*.ipynb",
+	"**/pyproject.toml",
+]
+file_resolver.extend_include = []
+file_resolver.respect_gitignore = true
+file_resolver.project_root = "[TMP]/"
+
+# Linter Settings
+linter.exclude = []
+linter.project_root = "[TMP]/"
+linter.rules.enabled = [
+	non-pep604-annotation-union (UP007),
+]
+linter.rules.should_fix = [
+	non-pep604-annotation-union (UP007),
+]
+linter.per_file_ignores = {}
+linter.safety_table.forced_safe = []
+linter.safety_table.forced_unsafe = []
+linter.unresolved_target_version = 3.11
+linter.per_file_target_version = {}
+linter.preview = disabled
+linter.explicit_preview_rules = false
+linter.extension = ExtensionMapping({})
+linter.allowed_confusables = []
+linter.builtins = []
+linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
+linter.external = []
+linter.ignore_init_module_imports = true
+linter.logger_objects = []
+linter.namespace_packages = []
+linter.src = [
+	"[TMP]/",
+	"[TMP]/src",
+]
+linter.tab_size = 4
+linter.line_length = 88
+linter.task_tags = [
+	TODO,
+	FIXME,
+	XXX,
+]
+linter.typing_modules = []
+linter.typing_extensions = true
+
+# Linter Plugins
+linter.flake8_annotations.mypy_init_return = false
+linter.flake8_annotations.suppress_dummy_args = false
+linter.flake8_annotations.suppress_none_returning = false
+linter.flake8_annotations.allow_star_arg_any = false
+linter.flake8_annotations.ignore_fully_untyped = false
+linter.flake8_bandit.hardcoded_tmp_directory = [
+	/tmp,
+	/var/tmp,
+	/dev/shm,
+]
+linter.flake8_bandit.check_typed_exception = false
+linter.flake8_bandit.extend_markup_names = []
+linter.flake8_bandit.allowed_markup_calls = []
+linter.flake8_bugbear.extend_immutable_calls = []
+linter.flake8_builtins.allowed_modules = []
+linter.flake8_builtins.ignorelist = []
+linter.flake8_builtins.strict_checking = false
+linter.flake8_comprehensions.allow_dict_calls_with_keyword_arguments = false
+linter.flake8_copyright.notice_rgx = (?i)Copyright\s+((?:\(C\)|©)\s+)?\d{4}((-|,\s)\d{4})*
+linter.flake8_copyright.author = none
+linter.flake8_copyright.min_file_size = 0
+linter.flake8_errmsg.max_string_length = 0
+linter.flake8_gettext.functions_names = [
+	_,
+	gettext,
+	ngettext,
+]
+linter.flake8_implicit_str_concat.allow_multiline = true
+linter.flake8_import_conventions.aliases = {
+	altair = alt,
+	holoviews = hv,
+	matplotlib = mpl,
+	matplotlib.pyplot = plt,
+	networkx = nx,
+	numpy = np,
+	numpy.typing = npt,
+	pandas = pd,
+	panel = pn,
+	plotly.express = px,
+	polars = pl,
+	pyarrow = pa,
+	seaborn = sns,
+	tensorflow = tf,
+	tkinter = tk,
+	xml.etree.ElementTree = ET,
+}
+linter.flake8_import_conventions.banned_aliases = {}
+linter.flake8_import_conventions.banned_from = []
+linter.flake8_pytest_style.fixture_parentheses = false
+linter.flake8_pytest_style.parametrize_names_type = tuple
+linter.flake8_pytest_style.parametrize_values_type = list
+linter.flake8_pytest_style.parametrize_values_row_type = tuple
+linter.flake8_pytest_style.raises_require_match_for = [
+	BaseException,
+	Exception,
+	ValueError,
+	OSError,
+	IOError,
+	EnvironmentError,
+	socket.error,
+]
+linter.flake8_pytest_style.raises_extend_require_match_for = []
+linter.flake8_pytest_style.mark_parentheses = false
+linter.flake8_quotes.inline_quotes = double
+linter.flake8_quotes.multiline_quotes = double
+linter.flake8_quotes.docstring_quotes = double
+linter.flake8_quotes.avoid_escape = true
+linter.flake8_self.ignore_names = [
+	_make,
+	_asdict,
+	_replace,
+	_fields,
+	_field_defaults,
+	_name_,
+	_value_,
+]
+linter.flake8_tidy_imports.ban_relative_imports = "parents"
+linter.flake8_tidy_imports.banned_api = {}
+linter.flake8_tidy_imports.banned_module_level_imports = []
+linter.flake8_type_checking.strict = false
+linter.flake8_type_checking.exempt_modules = [
+	typing,
+	typing_extensions,
+]
+linter.flake8_type_checking.runtime_required_base_classes = []
+linter.flake8_type_checking.runtime_required_decorators = []
+linter.flake8_type_checking.quote_annotations = false
+linter.flake8_unused_arguments.ignore_variadic_names = false
+linter.isort.required_imports = []
+linter.isort.combine_as_imports = false
+linter.isort.force_single_line = false
+linter.isort.force_sort_within_sections = false
+linter.isort.detect_same_package = true
+linter.isort.case_sensitive = false
+linter.isort.force_wrap_aliases = false
+linter.isort.force_to_top = []
+linter.isort.known_modules = {}
+linter.isort.order_by_type = true
+linter.isort.relative_imports_order = furthest_to_closest
+linter.isort.single_line_exclusions = []
+linter.isort.split_on_trailing_comma = true
+linter.isort.classes = []
+linter.isort.constants = []
+linter.isort.variables = []
+linter.isort.no_lines_before = []
+linter.isort.lines_after_imports = -1
+linter.isort.lines_between_types = 0
+linter.isort.forced_separate = []
+linter.isort.section_order = [
+	known { type = future },
+	known { type = standard_library },
+	known { type = third_party },
+	known { type = first_party },
+	known { type = local_folder },
+]
+linter.isort.default_section = known { type = third_party }
+linter.isort.no_sections = false
+linter.isort.from_first = false
+linter.isort.length_sort = false
+linter.isort.length_sort_straight = false
+linter.mccabe.max_complexity = 10
+linter.pep8_naming.ignore_names = [
+	setUp,
+	tearDown,
+	setUpClass,
+	tearDownClass,
+	setUpModule,
+	tearDownModule,
+	asyncSetUp,
+	asyncTearDown,
+	setUpTestData,
+	failureException,
+	longMessage,
+	maxDiff,
+]
+linter.pep8_naming.classmethod_decorators = []
+linter.pep8_naming.staticmethod_decorators = []
+linter.pycodestyle.max_line_length = 88
+linter.pycodestyle.max_doc_length = none
+linter.pycodestyle.ignore_overlong_task_comments = false
+linter.pyflakes.extend_generics = []
+linter.pyflakes.allowed_unused_imports = []
+linter.pylint.allow_magic_value_types = [
+	str,
+	bytes,
+]
+linter.pylint.allow_dunder_method_names = []
+linter.pylint.max_args = 5
+linter.pylint.max_positional_args = 5
+linter.pylint.max_returns = 6
+linter.pylint.max_bool_expr = 5
+linter.pylint.max_branches = 12
+linter.pylint.max_statements = 50
+linter.pylint.max_public_methods = 20
+linter.pylint.max_locals = 15
+linter.pylint.max_nested_blocks = 5
+linter.pyupgrade.keep_runtime_typing = false
+linter.ruff.parenthesize_tuple_in_subscript = false
+
+# Formatter Settings
+formatter.exclude = []
+formatter.unresolved_target_version = 3.11
+formatter.per_file_target_version = {}
+formatter.preview = disabled
+formatter.line_width = 88
+formatter.line_ending = auto
+formatter.indent_style = space
+formatter.indent_width = 4
+formatter.quote_style = double
+formatter.magic_trailing_comma = respect
+formatter.docstring_code_format = disabled
+formatter.docstring_code_line_width = dynamic
+
+# Analyze Settings
+analyze.exclude = []
+analyze.preview = disabled
+analyze.target_version = 3.11
+analyze.string_imports = disabled
+analyze.extension = ExtensionMapping({})
+analyze.include_dependencies = {}
+
+----- stderr -----

crates/ruff/tests/integration_test.rs

@@ -1688,6 +1688,27 @@ fn check_input_from_argfile() -> Result<()> {
     Ok(())
 }
 
+#[test]
+// Regression test for https://github.com/astral-sh/ruff/issues/20655
+fn missing_argfile_reports_error() {
+    let mut cmd = RuffCheck::default().filename("@!.txt").build();
+    insta::with_settings!({filters => vec![
+        ("The system cannot find the file specified.", "No such file or directory")
+    ]}, {
+        assert_cmd_snapshot!(cmd, @r"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+
+    ----- stderr -----
+    ruff failed
+      Cause: Failed to read CLI arguments from files
+      Cause: failed to open file `!.txt`
+      Cause: No such file or directory (os error 2)
+    ");
+    });
+}
+
 #[test]
 fn check_hints_hidden_unsafe_fixes() {
     let mut cmd = RuffCheck::default()

crates/ruff_benchmark/benches/ty.rs

@@ -599,7 +599,7 @@ impl<'a> ProjectBenchmark<'a> {
             self.project
                 .check_paths()
                 .iter()
-                .map(|path| path.to_path_buf())
+                .map(|path| SystemPathBuf::from(*path))
                 .collect(),
         );
 
@@ -645,8 +645,8 @@ fn hydra(criterion: &mut Criterion) {
             name: "hydra-zen",
             repository: "https://github.com/mit-ll-responsible-ai/hydra-zen",
             commit: "dd2b50a9614c6f8c46c5866f283c8f7e7a960aa8",
-            paths: vec![SystemPath::new("src")],
-            dependencies: vec!["pydantic", "beartype", "hydra-core"],
+            paths: &["src"],
+            dependencies: &["pydantic", "beartype", "hydra-core"],
             max_dep_date: "2025-06-17",
             python_version: PythonVersion::PY313,
         },
@@ -662,8 +662,8 @@ fn attrs(criterion: &mut Criterion) {
             name: "attrs",
             repository: "https://github.com/python-attrs/attrs",
             commit: "a6ae894aad9bc09edc7cdad8c416898784ceec9b",
-            paths: vec![SystemPath::new("src")],
-            dependencies: vec![],
+            paths: &["src"],
+            dependencies: &[],
             max_dep_date: "2025-06-17",
             python_version: PythonVersion::PY313,
         },
@@ -679,8 +679,8 @@ fn anyio(criterion: &mut Criterion) {
             name: "anyio",
             repository: "https://github.com/agronholm/anyio",
             commit: "561d81270a12f7c6bbafb5bc5fad99a2a13f96be",
-            paths: vec![SystemPath::new("src")],
-            dependencies: vec![],
+            paths: &["src"],
+            dependencies: &[],
             max_dep_date: "2025-06-17",
             python_version: PythonVersion::PY313,
         },
@@ -696,8 +696,8 @@ fn datetype(criterion: &mut Criterion) {
             name: "DateType",
             repository: "https://github.com/glyph/DateType",
             commit: "57c9c93cf2468069f72945fc04bf27b64100dad8",
-            paths: vec![SystemPath::new("src")],
-            dependencies: vec![],
+            paths: &["src"],
+            dependencies: &[],
             max_dep_date: "2025-07-04",
             python_version: PythonVersion::PY313,
         },

crates/ruff_benchmark/benches/ty_walltime.rs

@@ -1,6 +1,5 @@
-use std::fmt::{Display, Formatter};
-
 use divan::{Bencher, bench};
+use std::fmt::{Display, Formatter};
 
 use rayon::ThreadPoolBuilder;
 use ruff_benchmark::real_world_projects::{InstalledProject, RealWorldProject};
@@ -13,29 +12,39 @@ use ty_project::metadata::value::{RangedValue, RelativePathBuf};
 use ty_project::{Db, ProjectDatabase, ProjectMetadata};
 
 struct Benchmark<'a> {
-    project: InstalledProject<'a>,
+    project: RealWorldProject<'a>,
+    installed_project: std::sync::OnceLock<InstalledProject<'a>>,
     max_diagnostics: usize,
 }
 
 impl<'a> Benchmark<'a> {
-    fn new(project: RealWorldProject<'a>, max_diagnostics: usize) -> Self {
-        let setup_project = project.setup().expect("Failed to setup project");
-
+    const fn new(project: RealWorldProject<'a>, max_diagnostics: usize) -> Self {
         Self {
-            project: setup_project,
+            project,
+            installed_project: std::sync::OnceLock::new(),
             max_diagnostics,
         }
     }
 
+    fn installed_project(&self) -> &InstalledProject<'a> {
+        self.installed_project.get_or_init(|| {
+            self.project
+                .clone()
+                .setup()
+                .expect("Failed to setup project")
+        })
+    }
+
     fn setup_iteration(&self) -> ProjectDatabase {
-        let root = SystemPathBuf::from_path_buf(self.project.path.clone()).unwrap();
+        let installed_project = self.installed_project();
+        let root = SystemPathBuf::from_path_buf(installed_project.path.clone()).unwrap();
         let system = OsSystem::new(&root);
 
         let mut metadata = ProjectMetadata::discover(&root, &system).unwrap();
 
         metadata.apply_options(Options {
             environment: Some(EnvironmentOptions {
-                python_version: Some(RangedValue::cli(self.project.config.python_version)),
+                python_version: Some(RangedValue::cli(installed_project.config.python_version)),
                 python: Some(RelativePathBuf::cli(SystemPath::new(".venv"))),
                 ..EnvironmentOptions::default()
             }),
@@ -46,7 +55,7 @@ impl<'a> Benchmark<'a> {
 
         db.project().set_included_paths(
             &mut db,
-            self.project
+            installed_project
                 .check_paths()
                 .iter()
                 .map(|path| SystemPath::absolute(path, &root))
@@ -58,7 +67,7 @@ impl<'a> Benchmark<'a> {
 
 impl Display for Benchmark<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        f.write_str(self.project.config.name)
+        self.project.name.fmt(f)
     }
 }
 
@@ -75,166 +84,150 @@ fn check_project(db: &ProjectDatabase, max_diagnostics: usize) {
     );
 }
 
-static ALTAIR: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "altair",
-            repository: "https://github.com/vega/altair",
-            commit: "d1f4a1ef89006e5f6752ef1f6df4b7a509336fba",
-            paths: vec![SystemPath::new("altair")],
-            dependencies: vec![
-                "jinja2",
-                "narwhals",
-                "numpy",
-                "packaging",
-                "pandas-stubs",
-                "pyarrow-stubs",
-                "pytest",
-                "scipy-stubs",
-                "types-jsonschema",
-            ],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY312,
-        },
-        1000,
-    )
-});
+static ALTAIR: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "altair",
+        repository: "https://github.com/vega/altair",
+        commit: "d1f4a1ef89006e5f6752ef1f6df4b7a509336fba",
+        paths: &["altair"],
+        dependencies: &[
+            "jinja2",
+            "narwhals",
+            "numpy",
+            "packaging",
+            "pandas-stubs",
+            "pyarrow-stubs",
+            "pytest",
+            "scipy-stubs",
+            "types-jsonschema",
+        ],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY312,
+    },
+    1000,
+);
 
-static COLOUR_SCIENCE: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "colour-science",
-            repository: "https://github.com/colour-science/colour",
-            commit: "a17e2335c29e7b6f08080aa4c93cfa9b61f84757",
-            paths: vec![SystemPath::new("colour")],
-            dependencies: vec![
-                "matplotlib",
-                "numpy",
-                "pandas-stubs",
-                "pytest",
-                "scipy-stubs",
-            ],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY310,
-        },
-        500,
-    )
-});
+static COLOUR_SCIENCE: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "colour-science",
+        repository: "https://github.com/colour-science/colour",
+        commit: "a17e2335c29e7b6f08080aa4c93cfa9b61f84757",
+        paths: &["colour"],
+        dependencies: &[
+            "matplotlib",
+            "numpy",
+            "pandas-stubs",
+            "pytest",
+            "scipy-stubs",
+        ],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY310,
+    },
+    600,
+);
 
-static FREQTRADE: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "freqtrade",
-            repository: "https://github.com/freqtrade/freqtrade",
-            commit: "2d842ea129e56575852ee0c45383c8c3f706be19",
-            paths: vec![SystemPath::new("freqtrade")],
-            dependencies: vec![
-                "numpy",
-                "pandas-stubs",
-                "pydantic",
-                "sqlalchemy",
-                "types-cachetools",
-                "types-filelock",
-                "types-python-dateutil",
-                "types-requests",
-                "types-tabulate",
-            ],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY312,
-        },
-        400,
-    )
-});
+static FREQTRADE: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "freqtrade",
+        repository: "https://github.com/freqtrade/freqtrade",
+        commit: "2d842ea129e56575852ee0c45383c8c3f706be19",
+        paths: &["freqtrade"],
+        dependencies: &[
+            "numpy",
+            "pandas-stubs",
+            "pydantic",
+            "sqlalchemy",
+            "types-cachetools",
+            "types-filelock",
+            "types-python-dateutil",
+            "types-requests",
+            "types-tabulate",
+        ],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY312,
+    },
+    400,
+);
 
-static PANDAS: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "pandas",
-            repository: "https://github.com/pandas-dev/pandas",
-            commit: "5909621e2267eb67943a95ef5e895e8484c53432",
-            paths: vec![SystemPath::new("pandas")],
-            dependencies: vec![
-                "numpy",
-                "types-python-dateutil",
-                "types-pytz",
-                "types-PyMySQL",
-                "types-setuptools",
-                "pytest",
-            ],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY312,
-        },
-        3000,
-    )
-});
+static PANDAS: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "pandas",
+        repository: "https://github.com/pandas-dev/pandas",
+        commit: "5909621e2267eb67943a95ef5e895e8484c53432",
+        paths: &["pandas"],
+        dependencies: &[
+            "numpy",
+            "types-python-dateutil",
+            "types-pytz",
+            "types-PyMySQL",
+            "types-setuptools",
+            "pytest",
+        ],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY312,
+    },
+    3000,
+);
 
-static PYDANTIC: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "pydantic",
-            repository: "https://github.com/pydantic/pydantic",
-            commit: "0c4a22b64b23dfad27387750cf07487efc45eb05",
-            paths: vec![SystemPath::new("pydantic")],
-            dependencies: vec![
-                "annotated-types",
-                "pydantic-core",
-                "typing-extensions",
-                "typing-inspection",
-            ],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY39,
-        },
-        1000,
-    )
-});
+static PYDANTIC: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "pydantic",
+        repository: "https://github.com/pydantic/pydantic",
+        commit: "0c4a22b64b23dfad27387750cf07487efc45eb05",
+        paths: &["pydantic"],
+        dependencies: &[
+            "annotated-types",
+            "pydantic-core",
+            "typing-extensions",
+            "typing-inspection",
+        ],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY39,
+    },
+    1000,
+);
 
-static SYMPY: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "sympy",
-            repository: "https://github.com/sympy/sympy",
-            commit: "22fc107a94eaabc4f6eb31470b39db65abb7a394",
-            paths: vec![SystemPath::new("sympy")],
-            dependencies: vec!["mpmath"],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY312,
-        },
-        13000,
-    )
-});
+static SYMPY: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "sympy",
+        repository: "https://github.com/sympy/sympy",
+        commit: "22fc107a94eaabc4f6eb31470b39db65abb7a394",
+        paths: &["sympy"],
+        dependencies: &["mpmath"],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY312,
+    },
+    13000,
+);
 
-static TANJUN: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "tanjun",
-            repository: "https://github.com/FasterSpeeding/Tanjun",
-            commit: "69f40db188196bc59516b6c69849c2d85fbc2f4a",
-            paths: vec![SystemPath::new("tanjun")],
-            dependencies: vec!["hikari", "alluka"],
-            max_dep_date: "2025-06-17",
-            python_version: PythonVersion::PY312,
-        },
-        100,
-    )
-});
+static TANJUN: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "tanjun",
+        repository: "https://github.com/FasterSpeeding/Tanjun",
+        commit: "69f40db188196bc59516b6c69849c2d85fbc2f4a",
+        paths: &["tanjun"],
+        dependencies: &["hikari", "alluka"],
+        max_dep_date: "2025-06-17",
+        python_version: PythonVersion::PY312,
+    },
+    100,
+);
 
-static STATIC_FRAME: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "static-frame",
-            repository: "https://github.com/static-frame/static-frame",
-            commit: "34962b41baca5e7f98f5a758d530bff02748a421",
-            paths: vec![SystemPath::new("static_frame")],
-            // N.B. `arraykit` is installed as a dependency during mypy_primer runs,
-            // but it takes much longer to be installed in a Codspeed run than it does in a mypy_primer run
-            // (seems to be built from source on the Codspeed CI runners for some reason).
-            dependencies: vec!["numpy"],
-            max_dep_date: "2025-08-09",
-            python_version: PythonVersion::PY311,
-        },
-        600,
-    )
-});
+static STATIC_FRAME: Benchmark = Benchmark::new(
+    RealWorldProject {
+        name: "static-frame",
+        repository: "https://github.com/static-frame/static-frame",
+        commit: "34962b41baca5e7f98f5a758d530bff02748a421",
+        paths: &["static_frame"],
+        // N.B. `arraykit` is installed as a dependency during mypy_primer runs,
+        // but it takes much longer to be installed in a Codspeed run than it does in a mypy_primer run
+        // (seems to be built from source on the Codspeed CI runners for some reason).
+        dependencies: &["numpy"],
+        max_dep_date: "2025-08-09",
+        python_version: PythonVersion::PY311,
+    },
+    630,
+);
 
 #[track_caller]
 fn run_single_threaded(bencher: Bencher, benchmark: &Benchmark) {
@@ -245,22 +238,22 @@ fn run_single_threaded(bencher: Bencher, benchmark: &Benchmark) {
         });
 }
 
-#[bench(args=[&*ALTAIR, &*FREQTRADE, &*PYDANTIC, &*TANJUN], sample_size=2, sample_count=3)]
+#[bench(args=[&ALTAIR, &FREQTRADE, &PYDANTIC, &TANJUN], sample_size=2, sample_count=3)]
 fn small(bencher: Bencher, benchmark: &Benchmark) {
     run_single_threaded(bencher, benchmark);
 }
 
-#[bench(args=[&*COLOUR_SCIENCE, &*PANDAS, &*STATIC_FRAME], sample_size=1, sample_count=3)]
+#[bench(args=[&COLOUR_SCIENCE, &PANDAS, &STATIC_FRAME], sample_size=1, sample_count=3)]
 fn medium(bencher: Bencher, benchmark: &Benchmark) {
     run_single_threaded(bencher, benchmark);
 }
 
-#[bench(args=[&*SYMPY], sample_size=1, sample_count=2)]
+#[bench(args=[&SYMPY], sample_size=1, sample_count=2)]
 fn large(bencher: Bencher, benchmark: &Benchmark) {
     run_single_threaded(bencher, benchmark);
 }
 
-#[bench(args=[&*PYDANTIC], sample_size=3, sample_count=8)]
+#[bench(args=[&PYDANTIC], sample_size=3, sample_count=8)]
 fn multithreaded(bencher: Bencher, benchmark: &Benchmark) {
     let thread_pool = ThreadPoolBuilder::new().build().unwrap();
 

crates/ruff_benchmark/src/real_world_projects.rs

@@ -30,9 +30,9 @@ pub struct RealWorldProject<'a> {
     /// Specific commit hash to checkout
     pub commit: &'a str,
     /// List of paths within the project to check (`ty check <paths>`)
-    pub paths: Vec<&'a SystemPath>,
+    pub paths: &'a [&'a str],
     /// Dependencies to install via uv
-    pub dependencies: Vec<&'a str>,
+    pub dependencies: &'a [&'a str],
     /// Limit candidate packages to those that were uploaded prior to a given point in time (ISO 8601 format).
     /// Maps to uv's `exclude-newer`.
     pub max_dep_date: &'a str,
@@ -125,9 +125,9 @@ impl<'a> InstalledProject<'a> {
         &self.config
     }
 
-    /// Get the benchmark paths as `SystemPathBuf`
-    pub fn check_paths(&self) -> &[&SystemPath] {
-        &self.config.paths
+    /// Get the benchmark paths
+    pub fn check_paths(&self) -> &[&str] {
+        self.config.paths
     }
 
     /// Get the virtual environment path
@@ -297,7 +297,7 @@ fn install_dependencies(checkout: &Checkout) -> Result<()> {
         "--exclude-newer",
         checkout.project().max_dep_date,
     ])
-    .args(&checkout.project().dependencies);
+    .args(checkout.project().dependencies);
 
     let output = cmd
         .output()

crates/ruff_db/src/diagnostic/mod.rs

@@ -7,7 +7,8 @@ use ruff_annotate_snippets::Level as AnnotateLevel;
 use ruff_text_size::{Ranged, TextRange, TextSize};
 
 pub use self::render::{
-    DisplayDiagnostic, DisplayDiagnostics, FileResolver, Input, ceil_char_boundary,
+    DisplayDiagnostic, DisplayDiagnostics, DummyFileResolver, FileResolver, Input,
+    ceil_char_boundary,
     github::{DisplayGithubDiagnostics, GithubRenderer},
 };
 use crate::{Db, files::File};
@@ -83,17 +84,14 @@ impl Diagnostic {
     /// at time of writing, `ruff_db` depends on `ruff_python_parser` instead of
     /// the other way around. And since we want to do this conversion in a couple
     /// places, it makes sense to centralize it _somewhere_. So it's here for now.
-    ///
-    /// Note that `message` is stored in the primary annotation, _not_ in the primary diagnostic
-    /// message.
     pub fn invalid_syntax(
         span: impl Into<Span>,
         message: impl IntoDiagnosticMessage,
         range: impl Ranged,
     ) -> Diagnostic {
-        let mut diag = Diagnostic::new(DiagnosticId::InvalidSyntax, Severity::Error, "");
+        let mut diag = Diagnostic::new(DiagnosticId::InvalidSyntax, Severity::Error, message);
         let span = span.into().with_range(range.range());
-        diag.annotate(Annotation::primary(span).message(message));
+        diag.annotate(Annotation::primary(span));
         diag
     }
 

crates/ruff_db/src/diagnostic/render.rs

@@ -1170,6 +1170,31 @@ pub fn ceil_char_boundary(text: &str, offset: TextSize) -> TextSize {
         .unwrap_or_else(|| TextSize::from(upper_bound))
 }
 
+/// A stub implementation of [`FileResolver`] intended for testing.
+pub struct DummyFileResolver;
+
+impl FileResolver for DummyFileResolver {
+    fn path(&self, _file: File) -> &str {
+        unimplemented!()
+    }
+
+    fn input(&self, _file: File) -> Input {
+        unimplemented!()
+    }
+
+    fn notebook_index(&self, _file: &UnifiedFile) -> Option<NotebookIndex> {
+        None
+    }
+
+    fn is_notebook(&self, _file: &UnifiedFile) -> bool {
+        false
+    }
+
+    fn current_directory(&self) -> &Path {
+        Path::new(".")
+    }
+}
+
 #[cfg(test)]
 mod tests {
 

crates/ruff_db/src/files.rs

@@ -193,6 +193,17 @@ impl Files {
         roots.at(&absolute)
     }
 
+    /// The same as [`Self::root`] but panics if no root is found.
+    #[track_caller]
+    pub fn expect_root(&self, db: &dyn Db, path: &SystemPath) -> FileRoot {
+        if let Some(root) = self.root(db, path) {
+            return root;
+        }
+
+        let roots = self.inner.roots.read().unwrap();
+        panic!("No root found for path '{path}'. Known roots: {roots:#?}");
+    }
+
     /// Adds a new root for `path` and returns the root.
     ///
     /// The root isn't added nor is the file root's kind updated if a root for `path` already exists.

crates/ruff_db/src/files/file_root.rs

@@ -81,6 +81,8 @@ impl FileRoots {
             }
         }
 
+        tracing::debug!("Adding new file root '{path}' of kind {kind:?}");
+
         // normalize the path to use `/` separators and escape the '{' and '}' characters,
         // which matchit uses for routing parameters
         let mut route = normalized_path.replace('{', "{{").replace('}', "}}");
@@ -95,7 +97,10 @@ impl FileRoots {
         self.by_path.insert(route.clone(), root).unwrap();
 
         // Insert a path that matches all subdirectories and files
-        route.push_str("/{*filepath}");
+        if !route.ends_with("/") {
+            route.push('/');
+        }
+        route.push_str("{*filepath}");
 
         self.by_path.insert(route, root).unwrap();
         self.roots.push(root);

crates/ruff_dev/src/generate_ty_rules.rs

@@ -93,14 +93,39 @@ fn generate_markdown() -> String {
             })
             .join("\n");
 
+        let status_text = match lint.status() {
+            ty_python_semantic::lint::LintStatus::Stable { since } => {
+                format!(
+                    r#"Added in <a href="https://github.com/astral-sh/ty/releases/tag/{since}">{since}</a>"#
+                )
+            }
+            ty_python_semantic::lint::LintStatus::Preview { since } => {
+                format!(
+                    r#"Preview (since <a href="https://github.com/astral-sh/ty/releases/tag/{since}">{since}</a>)"#
+                )
+            }
+            ty_python_semantic::lint::LintStatus::Deprecated { since, .. } => {
+                format!(
+                    r#"Deprecated (since <a href="https://github.com/astral-sh/ty/releases/tag/{since}">{since}</a>)"#
+                )
+            }
+            ty_python_semantic::lint::LintStatus::Removed { since, .. } => {
+                format!(
+                    r#"Removed (since <a href="https://github.com/astral-sh/ty/releases/tag/{since}">{since}</a>)"#
+                )
+            }
+        };
+
         let _ = writeln!(
             &mut output,
             r#"<small>
-Default level: [`{level}`](../rules.md#rule-levels "This lint has a default level of '{level}'.") ·
-[Related issues](https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20{encoded_name}) ·
-[View source](https://github.com/astral-sh/ruff/blob/main/{file}#L{line})
+Default level: <a href="../rules.md#rule-levels" title="This lint has a default level of '{level}'."><code>{level}</code></a> ·
+{status_text} ·
+<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20{encoded_name}" target="_blank">Related issues</a> ·
+<a href="https://github.com/astral-sh/ruff/blob/main/{file}#L{line}" target="_blank">View source</a>
 </small>
 
+
 {documentation}
 "#,
             level = lint.default_level(),

crates/ruff_graph/src/db.rs

@@ -98,6 +98,10 @@ impl Db for ModuleDb {
     fn lint_registry(&self) -> &LintRegistry {
         default_lint_registry()
     }
+
+    fn verbose(&self) -> bool {
+        false
+    }
 }
 
 #[salsa::db]

crates/ruff_linter/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.13.2"
+version = "0.14.1"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }

crates/ruff_linter/resources/test/fixtures/airflow/AIR301_names.py

@@ -11,7 +11,7 @@ from airflow import (
 )
 from airflow.api_connexion.security import requires_access
 from airflow.contrib.aws_athena_hook import AWSAthenaHook
-from airflow.datasets import DatasetAliasEvent
+from airflow.datasets import DatasetAliasEvent, DatasetEvent
 from airflow.operators.postgres_operator import Mapping
 from airflow.operators.subdag import SubDagOperator
 from airflow.secrets.cache import SecretCache
@@ -48,6 +48,7 @@ AWSAthenaHook()
 
 # airflow.datasets
 DatasetAliasEvent()
+DatasetEvent()
 
 
 # airflow.operators.subdag.*

crates/ruff_linter/resources/test/fixtures/fastapi/FAST003.py

@@ -227,3 +227,32 @@ async def read_thing(query: str):
 @app.get("/things/{ thing_id : str }")
 async def read_thing(query: str):
     return {"query": query}
+
+
+# https://github.com/astral-sh/ruff/issues/20680
+# These should NOT trigger FAST003 because FastAPI doesn't recognize them as path parameters
+
+# Non-ASCII characters in parameter name
+@app.get("/f1/{用户身份}")
+async def f1():
+    return locals()
+
+# Space in parameter name  
+@app.get("/f2/{x: str}")
+async def f2():
+    return locals()
+
+# Non-ASCII converter
+@app.get("/f3/{complex_number:ℂ}")
+async def f3():
+    return locals()
+
+# Mixed non-ASCII characters
+@app.get("/f4/{用户_id}")
+async def f4():
+    return locals()
+
+# Space in parameter name with converter
+@app.get("/f5/{param: int}")
+async def f5():
+    return locals()

crates/ruff_linter/resources/test/fixtures/flake8_annotations/shadowed_builtins.py

@@ -0,0 +1,21 @@
+from collections import UserString as str
+from typing import override
+
+def foo():
+    return "!"
+
+def _foo():
+    return "!"
+
+class C:
+    @override
+    def __str__(self):
+        return "!"
+    
+    @staticmethod
+    def foo():
+        return "!"
+    
+    @classmethod
+    def bar(cls):
+        return "!"

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S602.py

@@ -33,3 +33,10 @@ class ShellConfig:
 
     def run(self, username):
         Popen("true", shell={**self.shell_defaults, **self.fetch_shell_config(username)})
+
+# Additional truthiness cases for generator, lambda, and f-strings
+Popen("true", shell=(i for i in ()))
+Popen("true", shell=lambda: 0)
+Popen("true", shell=f"{b''}")
+x = 1
+Popen("true", shell=f"{x=}")

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S604.py

@@ -6,3 +6,19 @@ foo(shell=True)
 
 foo(shell={**{}})
 foo(shell={**{**{}}})
+
+# Truthy non-bool values for `shell`
+foo(shell=(i for i in ()))
+foo(shell=lambda: 0)
+
+# f-strings guaranteed non-empty
+foo(shell=f"{b''}")
+x = 1
+foo(shell=f"{x=}")
+
+# Additional truthiness cases for generator, lambda, and f-strings
+foo(shell=(i for i in ()))
+foo(shell=lambda: 0)
+foo(shell=f"{b''}")
+x = 1
+foo(shell=f"{x=}")

crates/ruff_linter/resources/test/fixtures/flake8_bandit/S609.py

@@ -9,3 +9,10 @@ os.system("tar cf foo.tar bar/*")
 
 subprocess.Popen(["chmod", "+w", "*.py"], shell={**{}})
 subprocess.Popen(["chmod", "+w", "*.py"], shell={**{**{}}})
+
+# Additional truthiness cases for generator, lambda, and f-strings
+subprocess.Popen("chmod +w foo*", shell=(i for i in ()))
+subprocess.Popen("chmod +w foo*", shell=lambda: 0)
+subprocess.Popen("chmod +w foo*", shell=f"{b''}")
+x = 1
+subprocess.Popen("chmod +w foo*", shell=f"{x=}")

crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B006_9.py

@@ -0,0 +1,26 @@
+def f1(x=([],)):
+    print(x)
+
+
+def f2(x=(x for x in "x")):
+    print(x)
+
+
+def f3(x=((x for x in "x"),)):
+    print(x)
+
+
+def f4(x=(z := [1, ])):
+    print(x)
+
+
+def f5(x=([1, ])):
+    print(x)
+
+
+def w1(x=(1,)):
+    print(x)
+
+
+def w2(x=(z := 3)):
+    print(x)

crates/ruff_linter/resources/test/fixtures/flake8_future_annotations/no_future_import_uses_preview_generics.py

@@ -0,0 +1,91 @@
+import asyncio
+import collections
+import contextlib
+import dataclasses
+import functools
+import os
+import queue
+import re
+import shelve
+import types
+import weakref
+from collections.abc import (
+    AsyncGenerator,
+    AsyncIterable,
+    AsyncIterator,
+    Awaitable,
+    ByteString,
+    Callable,
+    Collection,
+    Container,
+    Coroutine,
+    Generator,
+    Iterable,
+    Iterator,
+    ItemsView,
+    KeysView,
+    Mapping,
+    MappingView,
+    MutableMapping,
+    MutableSequence,
+    MutableSet,
+    Reversible,
+    Sequence,
+    Set,
+    ValuesView,
+)
+
+
+def takes_preview_generics(
+    future: asyncio.Future[int],
+    task: asyncio.Task[str],
+    deque_object: collections.deque[int],
+    defaultdict_object: collections.defaultdict[str, int],
+    ordered_dict: collections.OrderedDict[str, int],
+    counter_obj: collections.Counter[str],
+    chain_map: collections.ChainMap[str, int],
+    context_manager: contextlib.AbstractContextManager[str],
+    async_context_manager: contextlib.AbstractAsyncContextManager[int],
+    dataclass_field: dataclasses.Field[int],
+    cached_prop: functools.cached_property[int],
+    partial_method: functools.partialmethod[int],
+    path_like: os.PathLike[str],
+    lifo_queue: queue.LifoQueue[int],
+    regular_queue: queue.Queue[int],
+    priority_queue: queue.PriorityQueue[int],
+    simple_queue: queue.SimpleQueue[int],
+    regex_pattern: re.Pattern[str],
+    regex_match: re.Match[str],
+    bsd_db_shelf: shelve.BsdDbShelf[str, int],
+    db_filename_shelf: shelve.DbfilenameShelf[str, int],
+    shelf_obj: shelve.Shelf[str, int],
+    mapping_proxy: types.MappingProxyType[str, int],
+    weak_key_dict: weakref.WeakKeyDictionary[object, int],
+    weak_method: weakref.WeakMethod[int],
+    weak_set: weakref.WeakSet[int],
+    weak_value_dict: weakref.WeakValueDictionary[object, int],
+    awaitable: Awaitable[int],
+    coroutine: Coroutine[int, None, str],
+    async_iterable: AsyncIterable[int],
+    async_iterator: AsyncIterator[int],
+    async_generator: AsyncGenerator[int, None],
+    iterable: Iterable[int],
+    iterator: Iterator[int],
+    generator: Generator[int, None, None],
+    reversible: Reversible[int],
+    container: Container[int],
+    collection: Collection[int],
+    callable_obj: Callable[[int], str],
+    set_obj: Set[int],
+    mutable_set: MutableSet[int],
+    mapping: Mapping[str, int],
+    mutable_mapping: MutableMapping[str, int],
+    sequence: Sequence[int],
+    mutable_sequence: MutableSequence[int],
+    byte_string: ByteString[int],
+    mapping_view: MappingView[str, int],
+    keys_view: KeysView[str],
+    items_view: ItemsView[str, int],
+    values_view: ValuesView[int],
+) -> None:
+    ...

crates/ruff_linter/resources/test/fixtures/flake8_implicit_str_concat/ISC_syntax_error.py

@@ -1,10 +1,10 @@
-# The lexer doesn't emit a string token if it's unterminated
+# The lexer emits a string token if it's unterminated
 "a" "b
 "a" "b" "c
 "a" """b
 c""" "d
 
-# For f-strings, the `FStringRanges` won't contain the range for
+# This is also true for
 # unterminated f-strings.
 f"a" f"b
 f"a" f"b" f"c

crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004_implicit_concat.py

@@ -0,0 +1,8 @@
+import logging
+
+variablename = "value"
+
+log = logging.getLogger(__name__)
+log.info(f"a" f"b {variablename}")
+log.info("a " f"b {variablename}")
+log.info("prefix " f"middle {variablename}" f" suffix")

crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI061.py

@@ -78,3 +78,11 @@ b: None | Literal[None] | None
 c: (None | Literal[None]) | None
 d: None | (Literal[None] | None)
 e: None | ((None | Literal[None]) | None) | None
+
+# Test cases for operator precedence issue (https://github.com/astral-sh/ruff/issues/20265)
+print(Literal[1, None].__dict__)  # Should become (Literal[1] | None).__dict__
+print(Literal[1, None].method())  # Should become (Literal[1] | None).method()
+print(Literal[1, None][0])  # Should become (Literal[1] | None)[0]
+print(Literal[1, None] + 1)  # Should become (Literal[1] | None) + 1
+print(Literal[1, None] * 2)  # Should become (Literal[1] | None) * 2
+print((Literal[1, None]).__dict__)  # Should become ((Literal[1] | None)).__dict__

crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM222.py

@@ -197,3 +197,10 @@ for x in {**a, **b} or [None]:
 
 # https://github.com/astral-sh/ruff/issues/7127
 def f(a: "'b' or 'c'"): ...
+
+# https://github.com/astral-sh/ruff/issues/20703
+print(f"{b''}" or "bar")  # SIM222
+x = 1
+print(f"{x=}" or "bar")  # SIM222
+(lambda: 1) or True  # SIM222
+(i for i in range(1)) or "bar"  # SIM222

crates/ruff_linter/resources/test/fixtures/flynt/FLY002.py

@@ -23,3 +23,9 @@ nok9 = '\n'.join([r"raw string", '<""">', "<'''>"])  # Not OK (both triple-quote
 # Regression test for: https://github.com/astral-sh/ruff/issues/7197
 def create_file_public_url(url, filename):
     return''.join([url, filename])
+
+# Regression test for: https://github.com/astral-sh/ruff/issues/19837
+nok10 = "".join((foo, '"'))
+nok11 = ''.join((foo, "'"))
+nok12 = ''.join([foo, "'", '"'])
+nok13 = "".join([foo, "'", '"'])

crates/ruff_linter/resources/test/fixtures/isort/required_imports/docstring_future_import.py

@@ -0,0 +1,3 @@
+"a docstring"
+from __future__ import annotations
+# EOF

crates/ruff_linter/resources/test/fixtures/isort/required_imports/future_import.py

@@ -0,0 +1,2 @@
+from __future__ import annotations
+# EOF

crates/ruff_linter/resources/test/fixtures/pydoclint/DOC102_google.py

@@ -0,0 +1,264 @@
+# DOC102
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Args:
+        a (int): The first number to add.
+        b (int): The second number to add.
+
+    Returns:
+        int: The sum of the two numbers.
+    """
+    return a + b
+
+
+# DOC102
+def multiply_list_elements(lst):
+    """
+    Multiplies each element in a list by a given multiplier.
+
+    Args:
+        lst (list of int): A list of integers.
+        multiplier (int): The multiplier for each element in the list.
+
+    Returns:
+        list of int: A new list with each element multiplied.
+    """
+    return [x * multiplier for x in lst]
+
+
+# DOC102
+def find_max_value():
+    """
+    Finds the maximum value in a list of numbers.
+
+    Args:
+        numbers (list of int): A list of integers to search through.
+
+    Returns:
+        int: The maximum value found in the list.
+    """
+    return max(numbers)
+
+
+# DOC102
+def create_user_profile(location="here"):
+    """
+    Creates a user profile with basic information.
+
+    Args:
+        name (str): The name of the user.
+        age (int): The age of the user.
+        email (str): The user's email address.
+        location (str): The location of the user.
+
+    Returns:
+        dict: A dictionary containing the user's profile.
+    """
+    return {
+        'name': name,
+        'age': age,
+        'email': email,
+        'location': location
+    }
+
+
+# DOC102
+def calculate_total_price(item_prices, discount):
+    """
+    Calculates the total price after applying tax and a discount.
+
+    Args:
+        item_prices (list of float): A list of prices for each item.
+        tax_rate (float): The tax rate to apply.
+        discount (float): The discount to subtract from the total.
+
+    Returns:
+        float: The final total price after tax and discount.
+    """
+    total = sum(item_prices)
+    total_with_tax = total + (total * tax_rate)
+    final_total = total_with_tax - discount
+    return final_total
+
+
+# DOC102
+def send_email(subject, body, bcc_address=None):
+    """
+    Sends an email to the specified recipients.
+
+    Args:
+        subject (str): The subject of the email.
+        body (str): The content of the email.
+        to_address (str): The recipient's email address.
+        cc_address (str, optional): The email address for CC. Defaults to None.
+        bcc_address (str, optional): The email address for BCC. Defaults to None.
+
+    Returns:
+        bool: True if the email was sent successfully, False otherwise.
+    """
+    return True
+
+
+# DOC102
+def concatenate_strings(*args):
+    """
+    Concatenates multiple strings with a specified separator.
+
+    Args:
+        separator (str): The separator to use between strings.
+        *args (str): Variable length argument list of strings to concatenate.
+
+    Returns:
+        str: A single concatenated string.
+    """
+    return separator.join(args)
+
+
+# DOC102
+def process_order(order_id):
+    """
+    Processes an order with a list of items and optional order details.
+
+    Args:
+        order_id (int): The unique identifier for the order.
+        *items (str): Variable length argument list of items in the order.
+        **details (dict): Additional details such as shipping method and address.
+
+    Returns:
+        dict: A dictionary containing the order summary.
+    """
+    return {
+        'order_id': order_id,
+        'items': items,
+        'details': details
+    }
+
+
+class Calculator:
+    """
+    A simple calculator class that can perform basic arithmetic operations.
+    """
+
+    # DOC102
+    def __init__(self):
+        """
+        Initializes the calculator with an initial value.
+
+        Args:
+            value (int, optional): The initial value of the calculator. Defaults to 0.
+        """
+        self.value = value
+
+    # DOC102
+    def add(self, number2):
+        """
+        Adds a number to the current value.
+
+        Args:
+            number (int or float): The number to add to the current value.
+
+        Returns:
+            int or float: The updated value after addition.
+        """
+        self.value += number + number2
+        return self.value
+
+    # DOC102
+    @classmethod
+    def from_string(cls):
+        """
+        Creates a Calculator instance from a string representation of a number.
+
+        Args:
+            value_str (str): The string representing the initial value.
+
+        Returns:
+            Calculator: A new instance of Calculator initialized with the value from the string.
+        """
+        value = float(value_str)
+        return cls(value)
+
+    # DOC102
+    @staticmethod
+    def is_valid_number():
+        """
+        Checks if a given number is valid (int or float).
+
+        Args:
+            number (any): The value to check.
+
+        Returns:
+            bool: True if the number is valid, False otherwise.
+        """
+        return isinstance(number, (int, float))
+
+# OK
+def foo(param1, param2, *args, **kwargs):
+    """Foo.
+
+    Args:
+        param1 (int): The first parameter.
+        param2 (:obj:`str`, optional): The second parameter. Defaults to None.
+            Second line of description: should be indented.
+        *args: Variable length argument list.
+        **kwargs: Arbitrary keyword arguments.
+    """
+    return
+
+# OK
+def on_server_unloaded(self, server_context: ServerContext) -> None:
+    ''' Execute ``on_server_unloaded`` from ``server_lifecycle.py`` (if
+    it is defined) when the server cleanly exits. (Before stopping the
+    server's ``IOLoop``.)
+
+    Args:
+        server_context (ServerContext) :
+
+    .. warning::
+        In practice this code may not run, since servers are often killed
+        by a signal.
+
+
+    '''
+    return self._lifecycle_handler.on_server_unloaded(server_context)
+
+# OK
+def function_with_kwargs(param1, param2, **kwargs):
+    """Function with **kwargs parameter.
+
+    Args:
+        param1 (int): The first parameter.
+        param2 (str): The second parameter.
+        extra_param (str): An extra parameter that may be passed via **kwargs.
+        another_extra (int): Another extra parameter.
+    """
+    return
+
+# OK
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Args:
+        b: The second number to add.
+
+    Returns:
+        int: The sum of the two numbers.
+    """
+    return
+
+# DOC102
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Args:
+        a: The first number to add.
+        b: The second number to add.
+
+    Returns:
+        int: The sum of the two numbers.
+    """
+    return a + b

crates/ruff_linter/resources/test/fixtures/pydoclint/DOC102_numpy.py

@@ -0,0 +1,372 @@
+# DOC102
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Parameters
+    ----------
+    a : int
+        The first number to add.
+    b : int
+        The second number to add.
+
+    Returns
+    -------
+    int
+        The sum of the two numbers.
+    """
+    return a + b
+
+
+# DOC102
+def multiply_list_elements(lst):
+    """
+    Multiplies each element in a list by a given multiplier.
+
+    Parameters
+    ----------
+    lst : list of int
+        A list of integers.
+    multiplier : int
+        The multiplier for each element in the list.
+
+    Returns
+    -------
+    list of int
+        A new list with each element multiplied.
+    """
+    return [x * multiplier for x in lst]
+
+
+# DOC102
+def find_max_value():
+    """
+    Finds the maximum value in a list of numbers.
+
+    Parameters
+    ----------
+    numbers : list of int
+        A list of integers to search through.
+
+    Returns
+    -------
+    int
+        The maximum value found in the list.
+    """
+    return max(numbers)
+
+
+# DOC102
+def create_user_profile(location="here"):
+    """
+    Creates a user profile with basic information.
+
+    Parameters
+    ----------
+    name : str
+        The name of the user.
+    age : int
+        The age of the user.
+    email : str
+        The user's email address.
+    location : str, optional
+        The location of the user, by default "here".
+
+    Returns
+    -------
+    dict
+        A dictionary containing the user's profile.
+    """
+    return {
+        'name': name,
+        'age': age,
+        'email': email,
+        'location': location
+    }
+
+
+# DOC102
+def calculate_total_price(item_prices, discount):
+    """
+    Calculates the total price after applying tax and a discount.
+
+    Parameters
+    ----------
+    item_prices : list of float
+        A list of prices for each item.
+    tax_rate : float
+        The tax rate to apply.
+    discount : float
+        The discount to subtract from the total.
+
+    Returns
+    -------
+    float
+        The final total price after tax and discount.
+    """
+    total = sum(item_prices)
+    total_with_tax = total + (total * tax_rate)
+    final_total = total_with_tax - discount
+    return final_total
+
+
+# DOC102
+def send_email(subject, body, bcc_address=None):
+    """
+    Sends an email to the specified recipients.
+
+    Parameters
+    ----------
+    subject : str
+        The subject of the email.
+    body : str
+        The content of the email.
+    to_address : str
+        The recipient's email address.
+    cc_address : str, optional
+        The email address for CC, by default None.
+    bcc_address : str, optional
+        The email address for BCC, by default None.
+
+    Returns
+    -------
+    bool
+        True if the email was sent successfully, False otherwise.
+    """
+    return True
+
+
+# DOC102
+def concatenate_strings(*args):
+    """
+    Concatenates multiple strings with a specified separator.
+
+    Parameters
+    ----------
+    separator : str
+        The separator to use between strings.
+    *args : str
+        Variable length argument list of strings to concatenate.
+
+    Returns
+    -------
+    str
+        A single concatenated string.
+    """
+    return True
+
+
+# DOC102
+def process_order(order_id):
+    """
+    Processes an order with a list of items and optional order details.
+
+    Parameters
+    ----------
+    order_id : int
+        The unique identifier for the order.
+    *items : str
+        Variable length argument list of items in the order.
+    **details : dict
+        Additional details such as shipping method and address.
+
+    Returns
+    -------
+    dict
+        A dictionary containing the order summary.
+    """
+    return {
+        'order_id': order_id,
+        'items': items,
+        'details': details
+    }
+
+
+class Calculator:
+    """
+    A simple calculator class that can perform basic arithmetic operations.
+    """
+
+    # DOC102
+    def __init__(self):
+        """
+        Initializes the calculator with an initial value.
+
+        Parameters
+        ----------
+        value : int, optional
+            The initial value of the calculator, by default 0.
+        """
+        self.value = value
+
+    # DOC102
+    def add(self, number2):
+        """
+        Adds two numbers to the current value.
+
+        Parameters
+        ----------
+        number : int or float
+            The first number to add.
+        number2 : int or float
+            The second number to add.
+
+        Returns
+        -------
+        int or float
+            The updated value after addition.
+        """
+        self.value += number + number2
+        return self.value
+
+    # DOC102
+    @classmethod
+    def from_string(cls):
+        """
+        Creates a Calculator instance from a string representation of a number.
+
+        Parameters
+        ----------
+        value_str : str
+            The string representing the initial value.
+
+        Returns
+        -------
+        Calculator
+            A new instance of Calculator initialized with the value from the string.
+        """
+        value = float(value_str)
+        return cls(value)
+
+    # DOC102
+    @staticmethod
+    def is_valid_number():
+        """
+        Checks if a given number is valid (int or float).
+
+        Parameters
+        ----------
+        number : any
+            The value to check.
+
+        Returns
+        -------
+        bool
+            True if the number is valid, False otherwise.
+        """
+        return isinstance(number, (int, float))
+
+# OK
+def function_with_kwargs(param1, param2, **kwargs):
+    """Function with **kwargs parameter.
+
+    Parameters
+    ----------
+    param1 : int
+        The first parameter.
+    param2 : str
+        The second parameter.
+    extra_param : str
+        An extra parameter that may be passed via **kwargs.
+    another_extra : int
+        Another extra parameter.
+    """
+    return True
+
+# OK
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Parameters
+    ----------
+    b
+        The second number to add.
+
+    Returns
+    -------
+    int
+        The sum of the two numbers.
+    """
+    return a + b
+
+# DOC102
+def add_numbers(b):
+    """
+    Adds two numbers and returns the result.
+
+    Parameters
+    ----------
+    a
+        The first number to add.
+    b
+        The second number to add.
+
+    Returns
+    -------
+    int
+        The sum of the two numbers.
+    """
+    return a + b
+
+class Foo:
+    # OK
+    def send_help(self, *args: Any) -> Any:
+        """|coro|
+
+        Shows the help command for the specified entity if given.
+        The entity can be a command or a cog.
+
+        If no entity is given, then it'll show help for the
+        entire bot.
+
+        If the entity is a string, then it looks up whether it's a
+        :class:`Cog` or a :class:`Command`.
+
+        .. note::
+
+            Due to the way this function works, instead of returning
+            something similar to :meth:`~.commands.HelpCommand.command_not_found`
+            this returns :class:`None` on bad input or no help command.
+
+        Parameters
+        ----------
+        entity: Optional[Union[:class:`Command`, :class:`Cog`, :class:`str`]]
+            The entity to show help for.
+
+        Returns
+        -------
+        Any
+            The result of the help command, if any.
+        """
+        return
+
+    # OK
+    @classmethod
+    async def convert(cls, ctx: Context, argument: str) -> Self:
+        """|coro|
+
+        The method that actually converters an argument to the flag mapping.
+
+        Parameters
+        ----------
+        cls: Type[:class:`FlagConverter`]
+            The flag converter class.
+        ctx: :class:`Context`
+            The invocation context.
+        argument: :class:`str`
+            The argument to convert from.
+
+        Raises
+        ------
+        FlagError
+            A flag related parsing error.
+        CommandError
+            A command related error.
+
+        Returns
+        -------
+        :class:`FlagConverter`
+            The flag converter instance with all flags parsed.
+        """
+        return

crates/ruff_linter/resources/test/fixtures/pyflakes/F821_18.py

@@ -14,6 +14,6 @@ class Bar:
     ]
 
 
-# OK: Allow named expressions in annotations.
+# This is no longer allowed on Python 3.14+
 x: (y := 1)
 print(y)

crates/ruff_linter/resources/test/fixtures/pyflakes/F821_26.py

@@ -13,16 +13,16 @@ CStr2: TypeAlias = Union["C", str]  # always okay
 
 # References to a class from inside the class:
 class C:
-    other: C = ...  # valid in a `.pyi` stub file, not in a `.py` runtime file
+    other: C = ...  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
     other2: "C" = ...  # always okay
-    def from_str(self, s: str) -> C: ...  # valid in a `.pyi` stub file, not in a `.py` runtime file
+    def from_str(self, s: str) -> C: ...  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
     def from_str2(self, s: str) -> "C": ...  # always okay
 
 # Circular references:
 class A:
-    foo: B  # valid in a `.pyi` stub file, not in a `.py` runtime file
+    foo: B  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
     foo2: "B"  # always okay
-    bar: dict[str, B]  # valid in a `.pyi` stub file, not in a `.py` runtime file
+    bar: dict[str, B]  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
     bar2: dict[str, "A"]  # always okay
 
 class B:

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP019.py

@@ -18,3 +18,20 @@ def print_third_word(word: Hello.Text) -> None:
 
 def print_fourth_word(word: Goodbye) -> None:
     print(word)
+    
+
+import typing_extensions
+import typing_extensions as TypingExt
+from typing_extensions import Text as TextAlias
+
+
+def print_fifth_word(word: typing_extensions.Text) -> None:
+    print(word)
+
+
+def print_sixth_word(word: TypingExt.Text) -> None:
+    print(word)
+
+
+def print_seventh_word(word: TextAlias) -> None:
+    print(word)

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP040.py

@@ -43,7 +43,7 @@ class Foo:
 T = typing.TypeVar(*args)
 x: typing.TypeAlias = list[T]
 
-# `default` should be skipped for now, added in Python 3.13
+# `default` was added in Python 3.13
 T = typing.TypeVar("T", default=Any)
 x: typing.TypeAlias = list[T]
 
@@ -90,9 +90,9 @@ PositiveList = TypeAliasType(
     "PositiveList2", list[Annotated[T, Gt(0)]], type_params=(T,)
 )
 
-# `default` should be skipped for now, added in Python 3.13
+# `default` was added in Python 3.13
 T = typing.TypeVar("T", default=Any)
-AnyList = TypeAliasType("AnyList", list[T], typep_params=(T,))
+AnyList = TypeAliasType("AnyList", list[T], type_params=(T,))
 
 # unsafe fix if comments within the fix
 T = TypeVar("T")
@@ -128,3 +128,7 @@ T: TypeAlias = ( # comment0
     str  # comment6
     # comment7
 ) # comment8
+
+# Test case for TypeVar with default - should be converted when preview mode is enabled
+T_default = TypeVar("T_default", default=int)
+DefaultList: TypeAlias = list[T_default]

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP046_0.py

@@ -122,7 +122,7 @@ class MixedGenerics[U]:
         return (u, t)
 
 
-# TODO(brent) default requires 3.13
+# default requires 3.13
 V = TypeVar("V", default=Any, bound=str)
 
 
@@ -130,6 +130,14 @@ class DefaultTypeVar(Generic[V]):  # -> [V: str = Any]
     var: V
 
 
+# Test case for TypeVar with default but no bound
+W = TypeVar("W", default=int)
+
+
+class DefaultOnlyTypeVar(Generic[W]):  # -> [W = int]
+    var: W
+
+
 # nested classes and functions are skipped
 class Outer:
     class Inner(Generic[T]):

crates/ruff_linter/resources/test/fixtures/pyupgrade/UP047.py

@@ -44,9 +44,7 @@ def any_str_param(s: AnyStr) -> AnyStr:
     return s
 
 
-# these cases are not handled
-
-# TODO(brent) default requires 3.13
+# default requires 3.13
 V = TypeVar("V", default=Any, bound=str)
 
 
@@ -54,6 +52,8 @@ def default_var(v: V) -> V:
     return v
 
 
+# these cases are not handled
+
 def outer():
     def inner(t: T) -> T:
         return t

crates/ruff_linter/resources/test/fixtures/ruff/RUF010.py

@@ -56,3 +56,11 @@ f"{str(object=3)}"
 f"{str(x for x in [])}"
 
 f"{str((x for x in []))}"
+
+# Debug text cases - should not trigger RUF010
+f"{str(1)=}"
+f"{ascii(1)=}"
+f"{repr(1)=}"
+f"{str('hello')=}"
+f"{ascii('hello')=}"
+f"{repr('hello')=}"

crates/ruff_linter/resources/test/fixtures/ruff/RUF051.py

@@ -128,3 +128,15 @@ if f"0" in d:                       # f-string
 
 if k in a.d:                        # Attribute dict
     del a.d[k]
+
+if k in d:                          # else statement
+    del d[k]
+else:
+    pass
+
+if k in d:                          # elif and else statements
+    del d[k]
+elif 0 in d:
+    del d[0]
+else:
+    pass

crates/ruff_linter/src/checkers/ast/analyze/definitions.rs

@@ -81,6 +81,7 @@ pub(crate) fn definitions(checker: &mut Checker) {
         Rule::UndocumentedPublicPackage,
     ]);
     let enforce_pydoclint = checker.any_rule_enabled(&[
+        Rule::DocstringExtraneousParameter,
         Rule::DocstringMissingReturns,
         Rule::DocstringExtraneousReturns,
         Rule::DocstringMissingYields,

crates/ruff_linter/src/checkers/ast/analyze/expression.rs

@@ -8,7 +8,8 @@ use ruff_text_size::Ranged;
 
 use crate::checkers::ast::Checker;
 use crate::preview::{
-    is_optional_as_none_in_union_enabled, is_unnecessary_default_type_args_stubs_enabled,
+    is_future_required_preview_generics_enabled, is_optional_as_none_in_union_enabled,
+    is_unnecessary_default_type_args_stubs_enabled,
 };
 use crate::registry::Rule;
 use crate::rules::{
@@ -69,7 +70,11 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                     && checker.semantic.in_annotation()
                     && checker.semantic.in_runtime_evaluated_annotation()
                     && !checker.semantic.in_string_type_definition()
-                    && typing::is_pep585_generic(value, &checker.semantic)
+                    && typing::is_pep585_generic(
+                        value,
+                        &checker.semantic,
+                        is_future_required_preview_generics_enabled(checker.settings()),
+                    )
                 {
                     flake8_future_annotations::rules::future_required_type_annotation(
                         checker,

crates/ruff_linter/src/checkers/ast/analyze/statement.rs

@@ -50,24 +50,6 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) {
                 pylint::rules::nonlocal_and_global(checker, nonlocal);
             }
         }
-        Stmt::Break(_) => {
-            if checker.is_rule_enabled(Rule::BreakOutsideLoop) {
-                pyflakes::rules::break_outside_loop(
-                    checker,
-                    stmt,
-                    &mut checker.semantic.current_statements().skip(1),
-                );
-            }
-        }
-        Stmt::Continue(_) => {
-            if checker.is_rule_enabled(Rule::ContinueOutsideLoop) {
-                pyflakes::rules::continue_outside_loop(
-                    checker,
-                    stmt,
-                    &mut checker.semantic.current_statements().skip(1),
-                );
-            }
-        }
         Stmt::FunctionDef(
             function_def @ ast::StmtFunctionDef {
                 is_async,

crates/ruff_linter/src/checkers/ast/mod.rs

@@ -697,6 +697,7 @@ impl SemanticSyntaxContext for Checker<'_> {
                 }
             }
             SemanticSyntaxErrorKind::FutureFeatureNotDefined(name) => {
+                // F407
                 if self.is_rule_enabled(Rule::FutureFeatureNotDefined) {
                     self.report_diagnostic(
                         pyflakes::rules::FutureFeatureNotDefined { name },
@@ -704,6 +705,18 @@ impl SemanticSyntaxContext for Checker<'_> {
                     );
                 }
             }
+            SemanticSyntaxErrorKind::BreakOutsideLoop => {
+                // F701
+                if self.is_rule_enabled(Rule::BreakOutsideLoop) {
+                    self.report_diagnostic(pyflakes::rules::BreakOutsideLoop, error.range);
+                }
+            }
+            SemanticSyntaxErrorKind::ContinueOutsideLoop => {
+                // F702
+                if self.is_rule_enabled(Rule::ContinueOutsideLoop) {
+                    self.report_diagnostic(pyflakes::rules::ContinueOutsideLoop, error.range);
+                }
+            }
             SemanticSyntaxErrorKind::ReboundComprehensionVariable
             | SemanticSyntaxErrorKind::DuplicateTypeParameter
             | SemanticSyntaxErrorKind::MultipleCaseAssignment(_)
@@ -811,19 +824,40 @@ impl SemanticSyntaxContext for Checker<'_> {
             }
         )
     }
+
+    fn in_loop_context(&self) -> bool {
+        let mut child = self.semantic.current_statement();
+
+        for parent in self.semantic.current_statements().skip(1) {
+            match parent {
+                Stmt::For(ast::StmtFor { orelse, .. })
+                | Stmt::While(ast::StmtWhile { orelse, .. }) => {
+                    if !orelse.contains(child) {
+                        return true;
+                    }
+                }
+                Stmt::FunctionDef(_) | Stmt::ClassDef(_) => {
+                    break;
+                }
+                _ => {}
+            }
+            child = parent;
+        }
+        false
+    }
 }
 
 impl<'a> Visitor<'a> for Checker<'a> {
     fn visit_stmt(&mut self, stmt: &'a Stmt) {
+        // Step 0: Pre-processing
+        self.semantic.push_node(stmt);
+
         // For functions, defer semantic syntax error checks until the body of the function is
         // visited
         if !stmt.is_function_def_stmt() {
             self.with_semantic_checker(|semantic, context| semantic.visit_stmt(stmt, context));
         }
 
-        // Step 0: Pre-processing
-        self.semantic.push_node(stmt);
-
         // For Jupyter Notebooks, we'll reset the `IMPORT_BOUNDARY` flag when
         // we encounter a cell boundary.
         if self.source_type.is_ipynb()

crates/ruff_linter/src/codes.rs

@@ -988,6 +988,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (FastApi, "003") => (RuleGroup::Stable, rules::fastapi::rules::FastApiUnusedPathParameter),
 
         // pydoclint
+        (Pydoclint, "102") => (RuleGroup::Preview, rules::pydoclint::rules::DocstringExtraneousParameter),
         (Pydoclint, "201") => (RuleGroup::Preview, rules::pydoclint::rules::DocstringMissingReturns),
         (Pydoclint, "202") => (RuleGroup::Preview, rules::pydoclint::rules::DocstringExtraneousReturns),
         (Pydoclint, "402") => (RuleGroup::Preview, rules::pydoclint::rules::DocstringMissingYields),

crates/ruff_linter/src/fs.rs

@@ -11,8 +11,7 @@ use crate::settings::types::CompiledPerFileIgnoreList;
 pub fn get_cwd() -> &'static Path {
     #[cfg(target_arch = "wasm32")]
     {
-        static CWD: std::sync::LazyLock<PathBuf> = std::sync::LazyLock::new(|| PathBuf::from("."));
-        &CWD
+        Path::new(".")
     }
     #[cfg(not(target_arch = "wasm32"))]
     path_absolutize::path_dedot::CWD.as_path()

crates/ruff_linter/src/importer/mod.rs

@@ -67,17 +67,25 @@ impl<'a> Importer<'a> {
     /// Add an import statement to import the given module.
     ///
     /// If there are no existing imports, the new import will be added at the top
-    /// of the file. Otherwise, it will be added after the most recent top-level
-    /// import statement.
+    /// of the file. If there are future imports, the new import will be added
+    /// after the last future import. Otherwise, it will be added after the most
+    /// recent top-level import statement.
     pub(crate) fn add_import(&self, import: &NameImport, at: TextSize) -> Edit {
         let required_import = import.to_string();
         if let Some(stmt) = self.preceding_import(at) {
             // Insert after the last top-level import.
             Insertion::end_of_statement(stmt, self.source, self.stylist).into_edit(&required_import)
         } else {
-            // Insert at the start of the file.
-            Insertion::start_of_file(self.python_ast, self.source, self.stylist)
-                .into_edit(&required_import)
+            // Check if there are any future imports that we need to respect
+            if let Some(last_future_import) = self.find_last_future_import() {
+                // Insert after the last future import
+                Insertion::end_of_statement(last_future_import, self.source, self.stylist)
+                    .into_edit(&required_import)
+            } else {
+                // Insert at the start of the file.
+                Insertion::start_of_file(self.python_ast, self.source, self.stylist)
+                    .into_edit(&required_import)
+            }
         }
     }
 
@@ -524,6 +532,18 @@ impl<'a> Importer<'a> {
         }
     }
 
+    /// Find the last `from __future__` import statement in the AST.
+    fn find_last_future_import(&self) -> Option<&'a Stmt> {
+        let mut body = self.python_ast.iter().peekable();
+        let _docstring = body.next_if(|stmt| ast::helpers::is_docstring_stmt(stmt));
+
+        body.take_while(|stmt| {
+            stmt.as_import_from_stmt()
+                .is_some_and(|import_from| import_from.module.as_deref() == Some("__future__"))
+        })
+        .last()
+    }
+
     /// Add a `from __future__ import annotations` import.
     pub(crate) fn add_future_import(&self) -> Edit {
         let import = &NameImport::ImportFrom(MemberNameImport::member(

crates/ruff_linter/src/linter.rs

@@ -24,17 +24,15 @@ use crate::checkers::tokens::check_tokens;
 use crate::directives::Directives;
 use crate::doc_lines::{doc_lines_from_ast, doc_lines_from_tokens};
 use crate::fix::{FixResult, fix_file};
-use crate::message::create_syntax_error_diagnostic;
 use crate::noqa::add_noqa;
 use crate::package::PackageRoot;
-use crate::preview::is_py314_support_enabled;
 use crate::registry::Rule;
 #[cfg(any(feature = "test-rules", test))]
 use crate::rules::ruff::rules::test_rules::{self, TEST_RULES, TestRule};
 use crate::settings::types::UnsafeFixes;
 use crate::settings::{LinterSettings, TargetVersion, flags};
 use crate::source_kind::SourceKind;
-use crate::{Locator, directives, fs, warn_user_once};
+use crate::{Locator, directives, fs};
 
 pub(crate) mod float;
 
@@ -442,14 +440,6 @@ pub fn lint_only(
 ) -> LinterResult {
     let target_version = settings.resolve_target_version(path);
 
-    if matches!(target_version, TargetVersion(Some(PythonVersion::PY314)))
-        && !is_py314_support_enabled(settings)
-    {
-        warn_user_once!(
-            "Support for Python 3.14 is in preview and may undergo breaking changes. Enable `preview` to remove this warning."
-        );
-    }
-
     let parsed = source.into_parsed(source_kind, source_type, target_version.parser_version());
 
     // Map row and column locations to byte slices (lazily).
@@ -505,15 +495,15 @@ fn diagnostics_to_messages(
     parse_errors
         .iter()
         .map(|parse_error| {
-            create_syntax_error_diagnostic(source_file.clone(), &parse_error.error, parse_error)
+            Diagnostic::invalid_syntax(source_file.clone(), &parse_error.error, parse_error)
         })
         .chain(unsupported_syntax_errors.iter().map(|syntax_error| {
-            create_syntax_error_diagnostic(source_file.clone(), syntax_error, syntax_error)
+            Diagnostic::invalid_syntax(source_file.clone(), syntax_error, syntax_error)
         }))
         .chain(
             semantic_syntax_errors
                 .iter()
-                .map(|error| create_syntax_error_diagnostic(source_file.clone(), error, error)),
+                .map(|error| Diagnostic::invalid_syntax(source_file.clone(), error, error)),
         )
         .chain(diagnostics.into_iter().map(|mut diagnostic| {
             if let Some(range) = diagnostic.range() {
@@ -551,14 +541,6 @@ pub fn lint_fix<'a>(
 
     let target_version = settings.resolve_target_version(path);
 
-    if matches!(target_version, TargetVersion(Some(PythonVersion::PY314)))
-        && !is_py314_support_enabled(settings)
-    {
-        warn_user_once!(
-            "Support for Python 3.14 is in preview and may undergo breaking changes. Enable `preview` to remove this warning."
-        );
-    }
-
     // Continuously fix until the source code stabilizes.
     loop {
         // Parse once.

crates/ruff_linter/src/message/mod.rs

@@ -16,7 +16,7 @@ use ruff_db::files::File;
 pub use grouped::GroupedEmitter;
 use ruff_notebook::NotebookIndex;
 use ruff_source_file::{SourceFile, SourceFileBuilder};
-use ruff_text_size::{Ranged, TextRange, TextSize};
+use ruff_text_size::{TextRange, TextSize};
 pub use sarif::SarifEmitter;
 
 use crate::Fix;
@@ -26,24 +26,6 @@ use crate::settings::types::{OutputFormat, RuffOutputFormat};
 mod grouped;
 mod sarif;
 
-/// Creates a `Diagnostic` from a syntax error, with the format expected by Ruff.
-///
-/// This is almost identical to `ruff_db::diagnostic::create_syntax_error_diagnostic`, except the
-/// `message` is stored as the primary diagnostic message instead of on the primary annotation.
-///
-/// TODO(brent) These should be unified at some point, but we keep them separate for now to avoid a
-/// ton of snapshot changes while combining ruff's diagnostic type with `Diagnostic`.
-pub fn create_syntax_error_diagnostic(
-    span: impl Into<Span>,
-    message: impl std::fmt::Display,
-    range: impl Ranged,
-) -> Diagnostic {
-    let mut diag = Diagnostic::new(DiagnosticId::InvalidSyntax, Severity::Error, message);
-    let span = span.into().with_range(range.range());
-    diag.annotate(Annotation::primary(span));
-    diag
-}
-
 /// Create a `Diagnostic` from a panic.
 pub fn create_panic_diagnostic(error: &PanicError, path: Option<&Path>) -> Diagnostic {
     let mut diagnostic = Diagnostic::new(
@@ -260,8 +242,6 @@ mod tests {
     use crate::message::{Emitter, EmitterContext, create_lint_diagnostic};
     use crate::{Edit, Fix};
 
-    use super::create_syntax_error_diagnostic;
-
     pub(super) fn create_syntax_error_diagnostics() -> Vec<Diagnostic> {
         let source = r"from os import
 
@@ -274,7 +254,7 @@ if call(foo
             .errors()
             .iter()
             .map(|parse_error| {
-                create_syntax_error_diagnostic(source_file.clone(), &parse_error.error, parse_error)
+                Diagnostic::invalid_syntax(source_file.clone(), &parse_error.error, parse_error)
             })
             .collect()
     }

crates/ruff_linter/src/preview.rs

@@ -7,10 +7,6 @@
 
 use crate::settings::LinterSettings;
 
-pub(crate) const fn is_py314_support_enabled(settings: &LinterSettings) -> bool {
-    settings.preview.is_enabled()
-}
-
 // Rule-specific behavior
 
 // https://github.com/astral-sh/ruff/pull/15541
@@ -200,6 +196,11 @@ pub(crate) const fn is_optional_as_none_in_union_enabled(settings: &LinterSettin
     settings.preview.is_enabled()
 }
 
+// https://github.com/astral-sh/ruff/pull/20659
+pub(crate) const fn is_future_required_preview_generics_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}
+
 // https://github.com/astral-sh/ruff/pull/18683
 pub(crate) const fn is_safe_super_call_with_parameters_fix_enabled(
     settings: &LinterSettings,
@@ -240,3 +241,36 @@ pub(crate) const fn is_a003_class_scope_shadowing_expansion_enabled(
 pub(crate) const fn is_refined_submodule_import_match_enabled(settings: &LinterSettings) -> bool {
     settings.preview.is_enabled()
 }
+
+// https://github.com/astral-sh/ruff/pull/20660
+pub(crate) const fn is_type_var_default_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}
+
+// github.com/astral-sh/ruff/issues/20004
+pub(crate) const fn is_b006_check_guaranteed_mutable_expr_enabled(
+    settings: &LinterSettings,
+) -> bool {
+    settings.preview.is_enabled()
+}
+
+// github.com/astral-sh/ruff/issues/20004
+pub(crate) const fn is_b006_unsafe_fix_preserve_assignment_expr_enabled(
+    settings: &LinterSettings,
+) -> bool {
+    settings.preview.is_enabled()
+}
+
+// https://github.com/astral-sh/ruff/pull/20520
+pub(crate) const fn is_fix_read_whole_file_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}
+
+// https://github.com/astral-sh/ruff/pull/20520
+pub(crate) const fn is_fix_write_whole_file_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}
+
+pub(crate) const fn is_typing_extensions_str_alias_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}