don't consider self

.github/workflows/build-docker.yml

@@ -40,7 +40,7 @@ jobs:
 
       - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
-      - uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         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@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         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@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         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@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}

.github/workflows/ci.yaml

@@ -142,7 +142,7 @@ 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 +225,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: |
           rustup component add clippy
@@ -245,21 +245,21 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - 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: "Install cargo nextest"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-insta
       - name: "Install uv"
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
         with:
           enable-cache: "true"
       - name: ty mdtests (GitHub annotations)
@@ -307,21 +307,21 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - 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: "Install cargo nextest"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-insta
       - name: "Install uv"
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
         with:
           enable-cache: "true"
       - name: "Run tests"
@@ -340,15 +340,15 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-nextest
       - name: "Install uv"
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
         with:
           enable-cache: "true"
       - name: "Run tests"
@@ -361,37 +361,6 @@ jobs:
           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"
-        shell: bash
-        env:
-          NEXTEST_PROFILE: "ci"
-        run: |
-          cargo nextest run --all-features --profile ci
-          cargo test --all-features --doc
-
   cargo-test-wasm:
     name: "cargo test (wasm)"
     runs-on: ubuntu-latest
@@ -402,7 +371,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
@@ -422,6 +391,23 @@ 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
@@ -437,7 +423,7 @@ jobs:
         with:
           file: "Cargo.toml"
           field: "workspace.package.rust-version"
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         env:
           MSRV: ${{ steps.msrv.outputs.value }}
@@ -460,13 +446,13 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "fuzz -> target"
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo-binstall"
-        uses: cargo-bins/cargo-binstall@a66119fbb1c952daba62640c2609111fe0803621 # v1.15.7
+        uses: cargo-bins/cargo-binstall@38e8f5e4c386b611d51e8aa997b9a06a3c8eb67a # v1.15.6
       - 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
@@ -486,7 +472,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         name: Download Ruff binary to test
         id: download-cached-binary
@@ -520,7 +506,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup component add rustfmt
       # Run all code generation scripts, and verify that the current output is
@@ -687,7 +673,7 @@ jobs:
           branch: ${{ github.event.pull_request.base.ref }}
           workflow: "ci.yaml"
           check_artifacts: true
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Fuzz
         env:
           FORCE_COLOR: 1
@@ -717,28 +703,10 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: cargo-bins/cargo-binstall@a66119fbb1c952daba62640c2609111fe0803621 # v1.15.7
+      - uses: cargo-bins/cargo-binstall@38e8f5e4c386b611d51e8aa997b9a06a3c8eb67a # v1.15.6
       - run: cargo binstall --no-confirm cargo-shear
       - run: cargo shear
 
-  ty-completion-evaluation:
-    name: "ty completion evaluation"
-    runs-on: depot-ubuntu-22.04-16
-    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
@@ -752,7 +720,7 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Prep README.md"
         run: python scripts/transform_readme.py --target pypi
       - name: "Build wheels"
@@ -775,13 +743,13 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
       - name: "Cache pre-commit"
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
         with:
           path: ~/.cache/pre-commit
           key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
@@ -809,7 +777,7 @@ jobs:
       - uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.13"
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Add SSH key"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
         uses: webfactory/ssh-agent@a6f90b1f127823b31d4d4a8d96047790581349bd # v0.9.1
@@ -818,7 +786,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
       - name: Install uv
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: "Install Insiders dependencies"
         if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
         run: uv pip install -r docs/requirements-insiders.txt --system
@@ -848,7 +816,7 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Run checks"
@@ -918,7 +886,7 @@ jobs:
           persist-credentials: false
       - name: "Install Rust toolchain"
         run: rustup target add wasm32-unknown-unknown
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
           node-version: 22
@@ -943,7 +911,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: determine_changes
     if: |
-      github.ref == 'refs/heads/main' ||
+      github.ref == 'refs/heads/main' || 
       (needs.determine_changes.outputs.formatter == 'true' || needs.determine_changes.outputs.linter == 'true')
     timeout-minutes: 20
     steps:
@@ -952,14 +920,14 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-codspeed
 
@@ -967,7 +935,7 @@ jobs:
         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@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
+        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
         with:
           mode: instrumentation
           run: cargo codspeed run
@@ -978,7 +946,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: determine_changes
     if: |
-      github.ref == 'refs/heads/main' ||
+      github.ref == 'refs/heads/main' || 
       needs.determine_changes.outputs.ty == 'true'
     timeout-minutes: 20
     steps:
@@ -987,14 +955,14 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-codspeed
 
@@ -1002,37 +970,33 @@ jobs:
         run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark --bench ty
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
+        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
         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
-    strategy:
-      matrix:
-        benchmarks:
-          - "medium|multithreaded"
-          - "small|large"
+    env:
+      TY_LOG: ruff_benchmark=debug
     steps:
       - name: "Checkout Branch"
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
       - name: "Install Rust toolchain"
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@522492a8c115f1b6d4d318581f09638e9442547b # v2.62.21
+        uses: taiki-e/install-action@67cc679904bee382389bf22082124fa963c6f6bd # v2.61.3
         with:
           tool: cargo-codspeed
 
@@ -1040,7 +1004,7 @@ jobs:
         run: cargo codspeed build --features "codspeed,walltime" --no-default-features -p ruff_benchmark
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@6b43a0cd438f6ca5ad26f9ed03ed159ed2df7da9 # v4.1.1
+        uses: CodSpeedHQ/action@653fdc30e6c40ffd9739e40c8a0576f4f4523ca1 # v4.0.1
         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
@@ -1048,5 +1012,5 @@ jobs:
           CODSPEED_PERF_ENABLED: false
         with:
           mode: walltime
-          run: cargo codspeed run --bench ty_walltime "${{ matrix.benchmarks }}"
+          run: cargo codspeed run
           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@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
       - 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

@@ -39,9 +39,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "ruff"
 
@@ -82,9 +82,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "ruff"
 

.github/workflows/publish-docs.yml

@@ -68,7 +68,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
 
       - 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@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           pattern: wheels-*

.github/workflows/sync_typeshed.yaml

@@ -65,7 +65,7 @@ jobs:
         run: |
           git config --global user.name typeshedbot
           git config --global user.email '<>'
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Sync typeshed stubs
         run: |
           rm -rf "ruff/${VENDORED_TYPESHED}"
@@ -117,7 +117,7 @@ jobs:
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot
@@ -155,7 +155,7 @@ jobs:
         with:
           persist-credentials: true
           ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
       - name: Setup git
         run: |
           git config --global user.name typeshedbot

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

@@ -33,9 +33,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "ruff"
 
@@ -64,12 +64,12 @@ jobs:
 
           cd ..
 
-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@908758da02a73ef3f3308e1dbb2248510029bbe4"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@279f8a15b0e7f77213bf9096dbc2335a19ef89c5"
 
           ecosystem-analyzer \
             --repository ruff \
             diff \
-            --profile=profiling \
+            --profile=release \
             --projects-old ruff/projects_old.txt \
             --projects-new ruff/projects_new.txt \
             --old old_commit \

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

@@ -29,9 +29,9 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6.8.0
+        uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "ruff"
 
@@ -49,13 +49,13 @@ jobs:
 
           cd ..
 
-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@908758da02a73ef3f3308e1dbb2248510029bbe4"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@279f8a15b0e7f77213bf9096dbc2335a19ef89c5"
 
           ecosystem-analyzer \
             --verbose \
             --repository ruff \
             analyze \
-            --profile=profiling \
+            --profile=release \
             --projects ruff/crates/ty_python_semantic/resources/primer/good.txt \
             --output ecosystem-diagnostics.json
 

.github/workflows/typing_conformance.yaml

@@ -45,7 +45,7 @@ jobs:
           path: typing
           persist-credentials: false
 
-      - uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
+      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
         with:
           workspaces: "ruff"
 

.pre-commit-config.yaml

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

BREAKING_CHANGES.md

@@ -1,21 +1,5 @@
 # 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

@@ -1,46 +1,266 @@
 # Changelog
 
-## 0.14.0
+## 0.13.3
 
-Released on 2025-10-07.
-
-### Breaking changes
-
-- Update default and latest Python versions for 3.14 ([#20725](https://github.com/astral-sh/ruff/pull/20725))
+Released on 2025-10-02.
 
 ### Preview features
 
-- \[`flake8-bugbear`\] 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))
+- 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
 
-- \[`flake8-annotations`\] 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))
+- \[`cli`\] 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
 
-- \[`flake8-comprehensions`\] Clarify fix safety documentation (`C413`) ([#20640](https://github.com/astral-sh/ruff/pull/20640))
+- 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
 
-- [@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)
+- [@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)
+
+## 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)
+
+## 0.13.1
+
+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.x
+## 0.13.0
 
-See [changelogs/0.13.x](./changelogs/0.13.x.md)
+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))
 
 ## 0.12.x
 

CONTRIBUTING.md

@@ -321,15 +321,9 @@ 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).
 
-### 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. Install `uv`: `curl -LsSf https://astral.sh/uv/install.sh | sh`
 
 1. Run `./scripts/release.sh`; this command will:
 
@@ -343,7 +337,6 @@ Commit each step of this process separately for easier review.
 
     - 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:
 
@@ -383,13 +376,13 @@ Commit each step of this process separately for easier review.
 
 1. Verify the GitHub release:
 
-    1. The changelog should match the content of `CHANGELOG.md`
+    1. The Changelog should match the content of `CHANGELOG.md`
+    1. Append the contributors from the `scripts/release.sh` script
 
 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 = "0.6.21"
+version = "0.6.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+checksum = "3ae563653d1938f79b1ab1b5e668c87c76a9930414574a6583a7b7e11a8e6192"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -65,9 +65,9 @@ dependencies = [
 
 [[package]]
 name = "anstyle"
-version = "1.0.13"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+checksum = "862ed96ca487e809f1c8e5a8447f6ee2cf102f846893800b20cebdf541fc6bbd"
 
 [[package]]
 name = "anstyle-lossy"
@@ -214,6 +214,15 @@ 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"
@@ -234,26 +243,6 @@ 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"
@@ -327,9 +316,9 @@ dependencies = [
 
 [[package]]
 name = "camino"
-version = "1.2.1"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "276a59bf2b2c967788139340c9f0c5b12d7fd6630315c15c217e559de85d2609"
+checksum = "e1de8bc0aa9e9385ceb3bf0c152e3a9b9544f6c4a912c8ae504e80c1f0368603"
 dependencies = [
  "serde_core",
 ]
@@ -361,15 +350,6 @@ 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"
@@ -420,17 +400,6 @@ 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"
@@ -517,17 +486,16 @@ dependencies = [
 
 [[package]]
 name = "codspeed"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0f62ea8934802f8b374bf691eea524c3aa444d7014f604dd4182a3667b69510"
+checksum = "35584c5fcba8059780748866387fb97c5a203bcfc563fc3d0790af406727a117"
 dependencies = [
  "anyhow",
- "bindgen",
- "cc",
+ "bincode 1.3.3",
  "colored 2.2.0",
  "glob",
  "libc",
- "nix 0.30.1",
+ "nix 0.29.0",
  "serde",
  "serde_json",
  "statrs",
@@ -536,22 +504,20 @@ dependencies = [
 
 [[package]]
 name = "codspeed-criterion-compat"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d87efbc015fc0ff1b2001cd87df01c442824de677e01a77230bf091534687abb"
+checksum = "78f6c1c6bed5fd84d319e8b0889da051daa361c79b7709c9394dfe1a882bba67"
 dependencies = [
- "clap",
  "codspeed",
  "codspeed-criterion-compat-walltime",
  "colored 2.2.0",
- "regex",
 ]
 
 [[package]]
 name = "codspeed-criterion-compat-walltime"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae5713ace440123bb4f1f78dd068d46872cb8548bfe61f752e7b2ad2c06d7f00"
+checksum = "c989289ce6b1cbde72ed560496cb8fbf5aa14d5ef5666f168e7f87751038352e"
 dependencies = [
  "anes",
  "cast",
@@ -574,22 +540,20 @@ dependencies = [
 
 [[package]]
 name = "codspeed-divan-compat"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b4214b974f8f5206497153e89db90274e623f06b00bf4b9143eeb7735d975d"
+checksum = "adf64eda57508448d59efd940bad62ede7c50b0d451a150b8d6a0eca642792a6"
 dependencies = [
- "clap",
  "codspeed",
  "codspeed-divan-compat-macros",
  "codspeed-divan-compat-walltime",
- "regex",
 ]
 
 [[package]]
 name = "codspeed-divan-compat-macros"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53f34a16cb70ce4fd9ad57e1db016f0718e434f34179ca652006443b9a39967"
+checksum = "058167258e819b16a4ba601fdfe270349ef191154758dbce122c62a698f70ba8"
 dependencies = [
  "divan-macros",
  "itertools 0.14.0",
@@ -601,9 +565,9 @@ dependencies = [
 
 [[package]]
 name = "codspeed-divan-compat-walltime"
-version = "4.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8a5099050c8948dce488b8eaa2e68dc5cf571cb8f9fce99aaaecbdddb940bcd"
+checksum = "48f9866ee3a4ef9d2868823ea5811886763af244f2df584ca247f49281c43f1f"
 dependencies = [
  "cfg-if",
  "clap",
@@ -854,27 +818,6 @@ 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"
@@ -1563,7 +1506,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
 dependencies = [
  "equivalent",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "serde",
  "serde_core",
 ]
@@ -1837,15 +1780,15 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.177"
+version = "0.2.175"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
+checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
 
 [[package]]
 name = "libcst"
-version = "1.8.5"
+version = "1.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d56bcd52d9b5e5f43e7fba20eb1f423ccb18c84cdf1cb506b8c1b95776b0b49"
+checksum = "052ef5d9fc958a51aeebdf3713573b36c6fd6eed0bf0e60e204d2c0f8cf19b9f"
 dependencies = [
  "annotate-snippets",
  "libcst_derive",
@@ -1858,24 +1801,14 @@ dependencies = [
 
 [[package]]
 name = "libcst_derive"
-version = "1.8.5"
+version = "1.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fcf5a725c4db703660124fe0edb98285f1605d0b87b7ee8684b699764a4f01a"
+checksum = "a91a751afee92cbdd59d4bc6754c7672712eec2d30a308f23de4e3287b2929cb"
 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"
@@ -2017,9 +1950,9 @@ checksum = "2f926ade0c4e170215ae43342bf13b9310a437609c81f29f86c5df6657582ef9"
 
 [[package]]
 name = "memchr"
-version = "2.7.6"
+version = "2.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
+checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
 
 [[package]]
 name = "memoffset"
@@ -2528,16 +2461,6 @@ 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"
@@ -2569,9 +2492,9 @@ dependencies = [
 
 [[package]]
 name = "pyproject-toml"
-version = "0.13.7"
+version = "0.13.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6d755483ad14b49e76713b52285235461a5b4f73f17612353e11a5de36a5fd2"
+checksum = "ec768e063102b426e8962989758115e8659485124de9207bc365fab524125d65"
 dependencies = [
  "indexmap",
  "pep440_rs",
@@ -2769,9 +2692,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.11.3"
+version = "1.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b5288124840bee7b386bc413c487869b360b2b4ec421ea56425128692f2a82c"
+checksum = "23d7fd106d8c02486a8d64e778353d1cffe08ce79ac2e82f540c86d0facf6912"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2781,9 +2704,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.11"
+version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "833eb9ce86d40ef33cb1306d8accf7bc8ec2bfea4355cbdebb3df68b40925cad"
+checksum = "6b9458fa0bfeeac22b5ca447c63aaf45f28439a709ccd244698632f9aa6394d6"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2815,12 +2738,12 @@ dependencies = [
 
 [[package]]
 name = "ruff"
-version = "0.14.0"
+version = "0.13.3"
 dependencies = [
  "anyhow",
  "argfile",
  "assert_fs",
- "bincode",
+ "bincode 2.0.1",
  "bitflags 2.9.4",
  "cachedir",
  "clap",
@@ -2854,7 +2777,6 @@ dependencies = [
  "ruff_python_ast",
  "ruff_python_formatter",
  "ruff_python_parser",
- "ruff_python_trivia",
  "ruff_server",
  "ruff_source_file",
  "ruff_text_size",
@@ -3072,7 +2994,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_linter"
-version = "0.14.0"
+version = "0.13.3"
 dependencies = [
  "aho-corasick",
  "anyhow",
@@ -3426,7 +3348,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_wasm"
-version = "0.14.0"
+version = "0.13.3"
 dependencies = [
  "console_error_panic_hook",
  "console_log",
@@ -4305,26 +4227,6 @@ 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"
@@ -4499,7 +4401,6 @@ dependencies = [
  "colored 3.0.0",
  "insta",
  "memchr",
- "path-slash",
  "regex",
  "ruff_db",
  "ruff_index",

Cargo.toml

@@ -43,7 +43,6 @@ 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" }
@@ -70,9 +69,8 @@ camino = { version = "1.1.7" }
 clap = { version = "4.5.3", features = ["derive"] }
 clap_complete_command = { version = "0.6.0" }
 clearscreen = { version = "4.0.0" }
-csv = { version = "1.3.1" }
-divan = { package = "codspeed-divan-compat", version = "4.0.4" }
-codspeed-criterion-compat = { version = "4.0.4", default-features = false }
+divan = { package = "codspeed-divan-compat", version = "3.0.2" }
+codspeed-criterion-compat = { version = "3.0.2", default-features = false }
 colored = { version = "3.0.0" }
 console_error_panic_hook = { version = "0.1.7" }
 console_log = { version = "1.0.0" }
@@ -205,7 +203,7 @@ wild = { version = "2" }
 zip = { version = "0.6.6", default-features = false }
 
 [workspace.metadata.cargo-shear]
-ignored = ["getrandom", "ruff_options_metadata", "uuid", "get-size2", "ty_completion_eval"]
+ignored = ["getrandom", "ruff_options_metadata", "uuid", "get-size2"]
 
 
 [workspace.lints.rust]
@@ -268,7 +266,12 @@ large_stack_arrays = "allow"
 
 
 [profile.release]
-lto = "fat"
+# 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"
 codegen-units = 16
 
 # Some crates don't change as much but benefit more from
@@ -278,8 +281,6 @@ 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
@@ -295,30 +296,11 @@ 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"
-strip = false
-debug = "full"
-lto = false
+debug = 1
 
 # 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 3.14 compatibility
+- 🤝 Python 3.13 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/0.14.0/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.14.0/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.13.3/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.13.3/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: v0.14.0
+  rev: v0.13.3
   hooks:
     # Run the linter.
     - id: ruff-check

changelogs/0.13.x.md

@@ -1,263 +0,0 @@
-# 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 = "0.14.0"
+version = "0.13.3"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }
@@ -72,7 +72,6 @@ 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/tests/cli/main.rs

@@ -1,177 +0,0 @@
-//! 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__requires_python_extend_from_shared_config.snap

@@ -1,288 +0,0 @@
----
-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

@@ -1,290 +0,0 @@
----
-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
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-	tearDown,
-	setUpClass,
-	tearDownClass,
-	setUpModule,
-	tearDownModule,
-	asyncSetUp,
-	asyncTearDown,
-	setUpTestData,
-	failureException,
-	longMessage,
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-linter.pylint.allow_magic_value_types = [
-	str,
-	bytes,
-]
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-linter.pylint.max_nested_blocks = 5
-linter.pyupgrade.keep_runtime_typing = false
-linter.ruff.parenthesize_tuple_in_subscript = false
-
-# Formatter Settings
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-formatter.magic_trailing_comma = respect
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-
-# Analyze Settings
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-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

@@ -1,292 +0,0 @@
----
-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
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-	".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",
-]
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-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
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-linter.project_root = "[TMP]/"
-linter.rules.enabled = [
-	non-pep604-annotation-union (UP007),
-]
-linter.rules.should_fix = [
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-linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
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-linter.logger_objects = []
-linter.namespace_packages = []
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-	"[TMP]/src",
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-linter.line_length = 88
-linter.task_tags = [
-	TODO,
-	FIXME,
-	XXX,
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-linter.typing_extensions = true
-
-# Linter Plugins
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-linter.flake8_annotations.suppress_none_returning = false
-linter.flake8_annotations.allow_star_arg_any = false
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-	/dev/shm,
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-	numpy = np,
-	numpy.typing = npt,
-	pandas = pd,
-	panel = pn,
-	plotly.express = px,
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-]
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-linter.flake8_quotes.inline_quotes = double
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-	known { type = standard_library },
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-	known { type = first_party },
-	known { type = local_folder },
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-linter.mccabe.max_complexity = 10
-linter.pep8_naming.ignore_names = [
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-	tearDown,
-	setUpClass,
-	tearDownClass,
-	setUpModule,
-	tearDownModule,
-	asyncSetUp,
-	asyncTearDown,
-	setUpTestData,
-	failureException,
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-linter.pyflakes.extend_generics = []
-linter.pyflakes.allowed_unused_imports = []
-linter.pylint.allow_magic_value_types = [
-	str,
-	bytes,
-]
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-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
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-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
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-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

@@ -1,292 +0,0 @@
----
-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",
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-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
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-linter.dummy_variable_rgx = ^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$
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-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
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-linter.flake8_annotations.suppress_dummy_args = false
-linter.flake8_annotations.suppress_none_returning = false
-linter.flake8_annotations.allow_star_arg_any = false
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-	/dev/shm,
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-linter.flake8_copyright.min_file_size = 0
-linter.flake8_errmsg.max_string_length = 0
-linter.flake8_gettext.functions_names = [
-	_,
-	gettext,
-	ngettext,
-]
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-	networkx = nx,
-	numpy = np,
-	numpy.typing = npt,
-	pandas = pd,
-	panel = pn,
-	plotly.express = px,
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-]
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-linter.mccabe.max_complexity = 10
-linter.pep8_naming.ignore_names = [
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-	tearDown,
-	setUpClass,
-	tearDownClass,
-	setUpModule,
-	tearDownModule,
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-	asyncTearDown,
-	setUpTestData,
-	failureException,
-	longMessage,
-	maxDiff,
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-linter.pyflakes.allowed_unused_imports = []
-linter.pylint.allow_magic_value_types = [
-	str,
-	bytes,
-]
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-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
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-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
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-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

@@ -1,289 +0,0 @@
----
-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
----
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-exit_code: 0
------ stdout -----
-Resolved settings for: "[TMP]/foo/test.py"
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-
------ stderr -----

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

@@ -1,289 +0,0 @@
----
-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
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-
-# File Resolver Settings
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-	".direnv",
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-	".git",
-	".git-rewrite",
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-
-# Linter Settings
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-
-# Formatter Settings
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-# Analyze Settings
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-
------ stderr -----

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

@@ -1,287 +0,0 @@
----
-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
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-	".direnv",
-	".eggs",
-	".git",
-	".git-rewrite",
-	".hg",
-	".ipynb_checkpoints",
-	".mypy_cache",
-	".nox",
-	".pants.d",
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-	".pytest_cache",
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-
-# Linter Settings
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-	TODO,
-	FIXME,
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-	bytes,
-]
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-# Formatter Settings
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-# Analyze Settings
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-
------ stderr -----

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

@@ -1,287 +0,0 @@
----
-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
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-unsafe_fixes = hint
-
-# File Resolver Settings
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-	".bzr",
-	".direnv",
-	".eggs",
-	".git",
-	".git-rewrite",
-	".hg",
-	".ipynb_checkpoints",
-	".mypy_cache",
-	".nox",
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-
-# Linter Settings
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-	TODO,
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-
-# Linter Plugins
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-linter.mccabe.max_complexity = 10
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-	setUpClass,
-	tearDownClass,
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-	asyncTearDown,
-	setUpTestData,
-	failureException,
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-	maxDiff,
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-linter.pyflakes.allowed_unused_imports = []
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-	bytes,
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-linter.pyupgrade.keep_runtime_typing = false
-linter.ruff.parenthesize_tuple_in_subscript = false
-
-# Formatter Settings
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-formatter.unresolved_target_version = 3.10
-formatter.per_file_target_version = {}
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-formatter.line_width = 88
-formatter.line_ending = auto
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-formatter.indent_width = 4
-formatter.quote_style = double
-formatter.magic_trailing_comma = respect
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-formatter.docstring_code_line_width = dynamic
-
-# Analyze Settings
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-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

@@ -1,288 +0,0 @@
----
-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",
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-	"venv",
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-	"*.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 = [
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-	"[TMP]/src",
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-linter.task_tags = [
-	TODO,
-	FIXME,
-	XXX,
-]
-linter.typing_modules = []
-linter.typing_extensions = true
-
-# Linter Plugins
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-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
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-	ngettext,
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-]
-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/snapshots/lint__output_format_sarif.snap

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

crates/ruff_benchmark/benches/ty.rs

@@ -599,7 +599,7 @@ impl<'a> ProjectBenchmark<'a> {
             self.project
                 .check_paths()
                 .iter()
-                .map(|path| SystemPathBuf::from(*path))
+                .map(|path| path.to_path_buf())
                 .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: &["src"],
-            dependencies: &["pydantic", "beartype", "hydra-core"],
+            paths: vec![SystemPath::new("src")],
+            dependencies: vec!["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: &["src"],
-            dependencies: &[],
+            paths: vec![SystemPath::new("src")],
+            dependencies: vec![],
             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: &["src"],
-            dependencies: &[],
+            paths: vec![SystemPath::new("src")],
+            dependencies: vec![],
             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: &["src"],
-            dependencies: &[],
+            paths: vec![SystemPath::new("src")],
+            dependencies: vec![],
             max_dep_date: "2025-07-04",
             python_version: PythonVersion::PY313,
         },

crates/ruff_benchmark/benches/ty_walltime.rs

@@ -1,6 +1,7 @@
-use divan::{Bencher, bench};
 use std::fmt::{Display, Formatter};
 
+use divan::{Bencher, bench};
+
 use rayon::ThreadPoolBuilder;
 use ruff_benchmark::real_world_projects::{InstalledProject, RealWorldProject};
 use ruff_db::system::{OsSystem, SystemPath, SystemPathBuf};
@@ -12,39 +13,29 @@ use ty_project::metadata::value::{RangedValue, RelativePathBuf};
 use ty_project::{Db, ProjectDatabase, ProjectMetadata};
 
 struct Benchmark<'a> {
-    project: RealWorldProject<'a>,
-    installed_project: std::sync::OnceLock<InstalledProject<'a>>,
+    project: InstalledProject<'a>,
     max_diagnostics: usize,
 }
 
 impl<'a> Benchmark<'a> {
-    const fn new(project: RealWorldProject<'a>, max_diagnostics: usize) -> Self {
+    fn new(project: RealWorldProject<'a>, max_diagnostics: usize) -> Self {
+        let setup_project = project.setup().expect("Failed to setup project");
+
         Self {
-            project,
-            installed_project: std::sync::OnceLock::new(),
+            project: setup_project,
             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 installed_project = self.installed_project();
-        let root = SystemPathBuf::from_path_buf(installed_project.path.clone()).unwrap();
+        let root = SystemPathBuf::from_path_buf(self.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(installed_project.config.python_version)),
+                python_version: Some(RangedValue::cli(self.project.config.python_version)),
                 python: Some(RelativePathBuf::cli(SystemPath::new(".venv"))),
                 ..EnvironmentOptions::default()
             }),
@@ -55,7 +46,7 @@ impl<'a> Benchmark<'a> {
 
         db.project().set_included_paths(
             &mut db,
-            installed_project
+            self.project
                 .check_paths()
                 .iter()
                 .map(|path| SystemPath::absolute(path, &root))
@@ -67,7 +58,7 @@ impl<'a> Benchmark<'a> {
 
 impl Display for Benchmark<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        self.project.name.fmt(f)
+        f.write_str(self.project.config.name)
     }
 }
 
@@ -84,150 +75,166 @@ fn check_project(db: &ProjectDatabase, max_diagnostics: usize) {
     );
 }
 
-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 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 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 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 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 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 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 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 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 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 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 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 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 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 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,
-);
+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,
+    )
+});
 
 #[track_caller]
 fn run_single_threaded(bencher: Bencher, benchmark: &Benchmark) {
@@ -238,22 +245,22 @@ 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: &'a [&'a str],
+    pub paths: Vec<&'a SystemPath>,
     /// Dependencies to install via uv
-    pub dependencies: &'a [&'a str],
+    pub dependencies: Vec<&'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
-    pub fn check_paths(&self) -> &[&str] {
-        self.config.paths
+    /// Get the benchmark paths as `SystemPathBuf`
+    pub fn check_paths(&self) -> &[&SystemPath] {
+        &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

@@ -7,8 +7,7 @@ use ruff_annotate_snippets::Level as AnnotateLevel;
 use ruff_text_size::{Ranged, TextRange, TextSize};
 
 pub use self::render::{
-    DisplayDiagnostic, DisplayDiagnostics, DummyFileResolver, FileResolver, Input,
-    ceil_char_boundary,
+    DisplayDiagnostic, DisplayDiagnostics, FileResolver, Input, ceil_char_boundary,
     github::{DisplayGithubDiagnostics, GithubRenderer},
 };
 use crate::{Db, files::File};

crates/ruff_db/src/diagnostic/render.rs

@@ -1170,31 +1170,6 @@ 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_dev/src/generate_ty_rules.rs

@@ -93,39 +93,14 @@ 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: <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>
+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})
 </small>
 
-
 {documentation}
 "#,
             level = lint.default_level(),

crates/ruff_linter/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.14.0"
+version = "0.13.3"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }

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

@@ -227,32 +227,3 @@ 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_bandit/S602.py

@@ -33,10 +33,3 @@ 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

@@ -6,19 +6,3 @@ 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

@@ -9,10 +9,3 @@ 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

@@ -1,26 +0,0 @@
-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_implicit_str_concat/ISC_syntax_error.py

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

@@ -1,8 +0,0 @@
-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_simplify/SIM222.py

@@ -197,10 +197,3 @@ 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/isort/required_imports/docstring_future_import.py

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

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

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

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

@@ -14,6 +14,6 @@ class Bar:
     ]
 
 
-# This is no longer allowed on Python 3.14+
+# OK: Allow named expressions in annotations.
 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, and in a `.py` runtime file with deferred annotations
+    other: C = ...  # valid in a `.pyi` stub file, not in a `.py` runtime file
     other2: "C" = ...  # always okay
-    def from_str(self, s: str) -> C: ...  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
+    def from_str(self, s: str) -> C: ...  # valid in a `.pyi` stub file, not in a `.py` runtime file
     def from_str2(self, s: str) -> "C": ...  # always okay
 
 # Circular references:
 class A:
-    foo: B  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
+    foo: B  # valid in a `.pyi` stub file, not in a `.py` runtime file
     foo2: "B"  # always okay
-    bar: dict[str, B]  # valid in a `.pyi` stub file, and in a `.py` runtime file with deferred annotations
+    bar: dict[str, B]  # valid in a `.pyi` stub file, not in a `.py` runtime file
     bar2: dict[str, "A"]  # always okay
 
 class B:

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

@@ -18,20 +18,3 @@ 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/ruff/RUF010.py

@@ -56,11 +56,3 @@ 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

@@ -128,15 +128,3 @@ 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/statement.rs

@@ -50,6 +50,15 @@ 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(

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

@@ -697,7 +697,6 @@ impl SemanticSyntaxContext for Checker<'_> {
                 }
             }
             SemanticSyntaxErrorKind::FutureFeatureNotDefined(name) => {
-                // F407
                 if self.is_rule_enabled(Rule::FutureFeatureNotDefined) {
                     self.report_diagnostic(
                         pyflakes::rules::FutureFeatureNotDefined { name },
@@ -705,12 +704,6 @@ impl SemanticSyntaxContext for Checker<'_> {
                     );
                 }
             }
-            SemanticSyntaxErrorKind::BreakOutsideLoop => {
-                // F701
-                if self.is_rule_enabled(Rule::BreakOutsideLoop) {
-                    self.report_diagnostic(pyflakes::rules::BreakOutsideLoop, error.range);
-                }
-            }
             SemanticSyntaxErrorKind::ReboundComprehensionVariable
             | SemanticSyntaxErrorKind::DuplicateTypeParameter
             | SemanticSyntaxErrorKind::MultipleCaseAssignment(_)
@@ -818,40 +811,19 @@ 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/fs.rs

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

crates/ruff_linter/src/importer/mod.rs

@@ -67,25 +67,17 @@ 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. 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.
+    /// of the file. 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 {
-            // 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)
-            }
+            // Insert at the start of the file.
+            Insertion::start_of_file(self.python_ast, self.source, self.stylist)
+                .into_edit(&required_import)
         }
     }
 
@@ -532,18 +524,6 @@ 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

@@ -27,13 +27,14 @@ 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};
+use crate::{Locator, directives, fs, warn_user_once};
 
 pub(crate) mod float;
 
@@ -441,6 +442,14 @@ 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).
@@ -542,6 +551,14 @@ 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/preview.rs

@@ -7,6 +7,10 @@
 
 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
@@ -241,31 +245,3 @@ 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()
 }
-
-// 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()
-}

crates/ruff_linter/src/rules/fastapi/mod.rs

@@ -8,12 +8,9 @@ mod tests {
     use anyhow::Result;
     use test_case::test_case;
 
-    use ruff_python_ast::PythonVersion;
-
     use crate::registry::Rule;
-    use crate::settings::LinterSettings;
     use crate::test::test_path;
-    use crate::{assert_diagnostics, assert_diagnostics_diff};
+    use crate::{assert_diagnostics, settings};
 
     #[test_case(Rule::FastApiRedundantResponseModel, Path::new("FAST001.py"))]
     #[test_case(Rule::FastApiNonAnnotatedDependency, Path::new("FAST002_0.py"))]
@@ -23,35 +20,12 @@ mod tests {
         let snapshot = format!("{}_{}", rule_code.name(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("fastapi").join(path).as_path(),
-            &LinterSettings::for_rule(rule_code),
+            &settings::LinterSettings::for_rule(rule_code),
         )?;
         assert_diagnostics!(snapshot, diagnostics);
         Ok(())
     }
 
-    #[test_case(Rule::FastApiRedundantResponseModel, Path::new("FAST001.py"))]
-    #[test_case(Rule::FastApiUnusedPathParameter, Path::new("FAST003.py"))]
-    fn deferred_annotations_diff(rule_code: Rule, path: &Path) -> Result<()> {
-        let snapshot = format!(
-            "deferred_annotations_diff_{}_{}",
-            rule_code.name(),
-            path.to_string_lossy()
-        );
-        assert_diagnostics_diff!(
-            snapshot,
-            Path::new("fastapi").join(path).as_path(),
-            &LinterSettings {
-                unresolved_target_version: PythonVersion::PY313.into(),
-                ..LinterSettings::for_rule(rule_code)
-            },
-            &LinterSettings {
-                unresolved_target_version: PythonVersion::PY314.into(),
-                ..LinterSettings::for_rule(rule_code)
-            },
-        );
-        Ok(())
-    }
-
     // FAST002 autofixes use `typing_extensions` on Python 3.8,
     // since `typing.Annotated` was added in Python 3.9
     #[test_case(Rule::FastApiNonAnnotatedDependency, Path::new("FAST002_0.py"))]
@@ -60,9 +34,9 @@ mod tests {
         let snapshot = format!("{}_{}_py38", rule_code.name(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("fastapi").join(path).as_path(),
-            &LinterSettings {
-                unresolved_target_version: PythonVersion::PY38.into(),
-                ..LinterSettings::for_rule(rule_code)
+            &settings::LinterSettings {
+                unresolved_target_version: ruff_python_ast::PythonVersion::PY38.into(),
+                ..settings::LinterSettings::for_rule(rule_code)
             },
         )?;
         assert_diagnostics!(snapshot, diagnostics);

crates/ruff_linter/src/rules/fastapi/rules/fastapi_unused_path_parameter.rs

@@ -1,12 +1,12 @@
+use std::iter::Peekable;
 use std::ops::Range;
-use std::sync::LazyLock;
-
-use regex::{CaptureMatches, Regex};
+use std::str::CharIndices;
 
 use ruff_macros::{ViolationMetadata, derive_message_formats};
 use ruff_python_ast as ast;
 use ruff_python_ast::{Arguments, Expr, ExprCall, ExprSubscript, Parameter, ParameterWithDefault};
 use ruff_python_semantic::{BindingKind, Modules, ScopeKind, SemanticModel};
+use ruff_python_stdlib::identifiers::is_identifier;
 use ruff_text_size::{Ranged, TextSize};
 
 use crate::Fix;
@@ -165,6 +165,11 @@ pub(crate) fn fastapi_unused_path_parameter(
 
     // Check if any of the path parameters are not in the function signature.
     for (path_param, range) in path_params {
+        // Ignore invalid identifiers (e.g., `user-id`, as opposed to `user_id`)
+        if !is_identifier(path_param) {
+            continue;
+        }
+
         // If the path parameter is already in the function or the dependency signature,
         // we don't need to do anything.
         if named_args.contains(&path_param) {
@@ -456,19 +461,15 @@ fn parameter_alias<'a>(parameter: &'a Parameter, semantic: &SemanticModel) -> Op
 /// the parameter name. For example, `/{x}` is a valid parameter, but `/{ x }` is treated literally.
 #[derive(Debug)]
 struct PathParamIterator<'a> {
-    inner: CaptureMatches<'a, 'a>,
+    input: &'a str,
+    chars: Peekable<CharIndices<'a>>,
 }
 
 impl<'a> PathParamIterator<'a> {
     fn new(input: &'a str) -> Self {
-        /// Matches the Starlette pattern for path parameters with optional converters from
-        /// <https://github.com/Kludex/starlette/blob/e18637c68e36d112b1983bc0c8b663681e6a4c50/starlette/routing.py#L121>
-        static FASTAPI_PATH_PARAM_REGEX: LazyLock<Regex> = LazyLock::new(|| {
-            Regex::new(r"\{([a-zA-Z_][a-zA-Z0-9_]*)(?::[a-zA-Z_][a-zA-Z0-9_]*)?\}").unwrap()
-        });
-
-        Self {
-            inner: FASTAPI_PATH_PARAM_REGEX.captures_iter(input),
+        PathParamIterator {
+            input,
+            chars: input.char_indices().peekable(),
         }
     }
 }
@@ -477,10 +478,19 @@ impl<'a> Iterator for PathParamIterator<'a> {
     type Item = (&'a str, Range<usize>);
 
     fn next(&mut self) -> Option<Self::Item> {
-        self.inner
-            .next()
-            // Extract the first capture group (the path parameter), but return the range of the
-            // whole match (everything in braces and including the braces themselves).
-            .and_then(|capture| Some((capture.get(1)?.as_str(), capture.get(0)?.range())))
+        while let Some((start, c)) = self.chars.next() {
+            if c == '{' {
+                if let Some((end, _)) = self.chars.by_ref().find(|&(_, ch)| ch == '}') {
+                    let param_content = &self.input[start + 1..end];
+                    // We ignore text after a colon, since those are path converters
+                    // See also: https://fastapi.tiangolo.com/tutorial/path-params/?h=path#path-convertor
+                    let param_name_end = param_content.find(':').unwrap_or(param_content.len());
+                    let param_name = &param_content[..param_name_end];
+
+                    return Some((param_name, start..end + 1));
+                }
+            }
+        }
+        None
     }
 }

crates/ruff_linter/src/rules/fastapi/snapshots/ruff_linter__rules__fastapi__tests__deferred_annotations_diff_fast-api-redundant-response-model_FAST001.py.snap

@@ -1,213 +0,0 @@
----
-source: crates/ruff_linter/src/rules/fastapi/mod.rs
----
---- Linter settings ---
--linter.unresolved_target_version = 3.13
-+linter.unresolved_target_version = 3.14
-
---- Summary ---
-Removed: 10
-Added: 0
-
---- Removed ---
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:17:22
-   |
-17 | @app.post("/items/", response_model=Item)
-   |                      ^^^^^^^^^^^^^^^^^^^
-18 | async def create_item(item: Item) -> Item:
-19 |     return item
-   |
-help: Remove argument
-14 | # Errors
-15 | 
-16 | 
-   - @app.post("/items/", response_model=Item)
-17 + @app.post("/items/")
-18 | async def create_item(item: Item) -> Item:
-19 |     return item
-20 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:22:22
-   |
-22 | @app.post("/items/", response_model=list[Item])
-   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
-23 | async def create_item(item: Item) -> list[Item]:
-24 |     return item
-   |
-help: Remove argument
-19 |     return item
-20 | 
-21 | 
-   - @app.post("/items/", response_model=list[Item])
-22 + @app.post("/items/")
-23 | async def create_item(item: Item) -> list[Item]:
-24 |     return item
-25 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:27:22
-   |
-27 | @app.post("/items/", response_model=List[Item])
-   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
-28 | async def create_item(item: Item) -> List[Item]:
-29 |     return item
-   |
-help: Remove argument
-24 |     return item
-25 | 
-26 | 
-   - @app.post("/items/", response_model=List[Item])
-27 + @app.post("/items/")
-28 | async def create_item(item: Item) -> List[Item]:
-29 |     return item
-30 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:32:22
-   |
-32 | @app.post("/items/", response_model=Dict[str, Item])
-   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-33 | async def create_item(item: Item) -> Dict[str, Item]:
-34 |     return item
-   |
-help: Remove argument
-29 |     return item
-30 | 
-31 | 
-   - @app.post("/items/", response_model=Dict[str, Item])
-32 + @app.post("/items/")
-33 | async def create_item(item: Item) -> Dict[str, Item]:
-34 |     return item
-35 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:37:22
-   |
-37 | @app.post("/items/", response_model=str)
-   |                      ^^^^^^^^^^^^^^^^^^
-38 | async def create_item(item: Item) -> str:
-39 |     return item
-   |
-help: Remove argument
-34 |     return item
-35 | 
-36 | 
-   - @app.post("/items/", response_model=str)
-37 + @app.post("/items/")
-38 | async def create_item(item: Item) -> str:
-39 |     return item
-40 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:42:21
-   |
-42 | @app.get("/items/", response_model=Item)
-   |                     ^^^^^^^^^^^^^^^^^^^
-43 | async def create_item(item: Item) -> Item:
-44 |     return item
-   |
-help: Remove argument
-39 |     return item
-40 | 
-41 | 
-   - @app.get("/items/", response_model=Item)
-42 + @app.get("/items/")
-43 | async def create_item(item: Item) -> Item:
-44 |     return item
-45 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:47:21
-   |
-47 | @app.get("/items/", response_model=Item)
-   |                     ^^^^^^^^^^^^^^^^^^^
-48 | @app.post("/items/", response_model=Item)
-49 | async def create_item(item: Item) -> Item:
-   |
-help: Remove argument
-44 |     return item
-45 | 
-46 | 
-   - @app.get("/items/", response_model=Item)
-47 + @app.get("/items/")
-48 | @app.post("/items/", response_model=Item)
-49 | async def create_item(item: Item) -> Item:
-50 |     return item
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:48:22
-   |
-47 | @app.get("/items/", response_model=Item)
-48 | @app.post("/items/", response_model=Item)
-   |                      ^^^^^^^^^^^^^^^^^^^
-49 | async def create_item(item: Item) -> Item:
-50 |     return item
-   |
-help: Remove argument
-45 | 
-46 | 
-47 | @app.get("/items/", response_model=Item)
-   - @app.post("/items/", response_model=Item)
-48 + @app.post("/items/")
-49 | async def create_item(item: Item) -> Item:
-50 |     return item
-51 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-  --> FAST001.py:53:24
-   |
-53 | @router.get("/items/", response_model=Item)
-   |                        ^^^^^^^^^^^^^^^^^^^
-54 | async def create_item(item: Item) -> Item:
-55 |     return item
-   |
-help: Remove argument
-50 |     return item
-51 | 
-52 | 
-   - @router.get("/items/", response_model=Item)
-53 + @router.get("/items/")
-54 | async def create_item(item: Item) -> Item:
-55 |     return item
-56 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST001 [*] FastAPI route with redundant `response_model` argument
-   --> FAST001.py:118:23
-    |
-116 | def setup_app(app_arg: FastAPI, non_app: str) -> None:
-117 |     # Error
-118 |     @app_arg.get("/", response_model=str)
-    |                       ^^^^^^^^^^^^^^^^^^
-119 |     async def get_root() -> str:
-120 |         return "Hello World!"
-    |
-help: Remove argument
-115 | 
-116 | def setup_app(app_arg: FastAPI, non_app: str) -> None:
-117 |     # Error
-    -     @app_arg.get("/", response_model=str)
-118 +     @app_arg.get("/")
-119 |     async def get_root() -> str:
-120 |         return "Hello World!"
-121 | 
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/fastapi/snapshots/ruff_linter__rules__fastapi__tests__deferred_annotations_diff_fast-api-unused-path-parameter_FAST003.py.snap

@@ -1,74 +0,0 @@
----
-source: crates/ruff_linter/src/rules/fastapi/mod.rs
----
---- Linter settings ---
--linter.unresolved_target_version = 3.13
-+linter.unresolved_target_version = 3.14
-
---- Summary ---
-Removed: 3
-Added: 0
-
---- Removed ---
-FAST003 [*] Parameter `thing_id` appears in route path, but not in `single` signature
-   --> FAST003.py:158:19
-    |
-157 | ### Errors
-158 | @app.get("/things/{thing_id}")
-    |                   ^^^^^^^^^^
-159 | async def single(other: Annotated[str, Depends(something_else)]): ...
-160 | @app.get("/things/{thing_id}")
-    |
-help: Add `thing_id` to function signature
-156 | 
-157 | ### Errors
-158 | @app.get("/things/{thing_id}")
-    - async def single(other: Annotated[str, Depends(something_else)]): ...
-159 + async def single(other: Annotated[str, Depends(something_else)], thing_id): ...
-160 | @app.get("/things/{thing_id}")
-161 | async def default(other: str = Depends(something_else)): ...
-162 | 
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST003 [*] Parameter `id` appears in route path, but not in `get_id_pydantic_full` signature
-   --> FAST003.py:197:12
-    |
-196 | # Errors
-197 | @app.get("/{id}")
-    |            ^^^^
-198 | async def get_id_pydantic_full(
-199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
-    |
-help: Add `id` to function signature
-196 | # Errors
-197 | @app.get("/{id}")
-198 | async def get_id_pydantic_full(
-    -     params: Annotated[PydanticParams, Depends(PydanticParams)],
-199 +     params: Annotated[PydanticParams, Depends(PydanticParams)], id,
-200 | ): ...
-201 | @app.get("/{id}")
-202 | async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
-note: This is an unsafe fix and may change runtime behavior
-
-
-FAST003 [*] Parameter `id` appears in route path, but not in `get_id_pydantic_short` signature
-   --> FAST003.py:201:12
-    |
-199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
-200 | ): ...
-201 | @app.get("/{id}")
-    |            ^^^^
-202 | async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
-203 | @app.get("/{id}")
-    |
-help: Add `id` to function signature
-199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
-200 | ): ...
-201 | @app.get("/{id}")
-    - async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
-202 + async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()], id): ...
-203 | @app.get("/{id}")
-204 | async def get_id_init_not_annotated(params = Depends(InitParams)): ...
-205 | 
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/fastapi/snapshots/ruff_linter__rules__fastapi__tests__fast-api-redundant-response-model_FAST001.py.snap

@@ -1,4 +1,195 @@
 ---
 source: crates/ruff_linter/src/rules/fastapi/mod.rs
 ---
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:17:22
+   |
+17 | @app.post("/items/", response_model=Item)
+   |                      ^^^^^^^^^^^^^^^^^^^
+18 | async def create_item(item: Item) -> Item:
+19 |     return item
+   |
+help: Remove argument
+14 | # Errors
+15 | 
+16 | 
+   - @app.post("/items/", response_model=Item)
+17 + @app.post("/items/")
+18 | async def create_item(item: Item) -> Item:
+19 |     return item
+20 | 
+note: This is an unsafe fix and may change runtime behavior
 
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:22:22
+   |
+22 | @app.post("/items/", response_model=list[Item])
+   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
+23 | async def create_item(item: Item) -> list[Item]:
+24 |     return item
+   |
+help: Remove argument
+19 |     return item
+20 | 
+21 | 
+   - @app.post("/items/", response_model=list[Item])
+22 + @app.post("/items/")
+23 | async def create_item(item: Item) -> list[Item]:
+24 |     return item
+25 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:27:22
+   |
+27 | @app.post("/items/", response_model=List[Item])
+   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
+28 | async def create_item(item: Item) -> List[Item]:
+29 |     return item
+   |
+help: Remove argument
+24 |     return item
+25 | 
+26 | 
+   - @app.post("/items/", response_model=List[Item])
+27 + @app.post("/items/")
+28 | async def create_item(item: Item) -> List[Item]:
+29 |     return item
+30 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:32:22
+   |
+32 | @app.post("/items/", response_model=Dict[str, Item])
+   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+33 | async def create_item(item: Item) -> Dict[str, Item]:
+34 |     return item
+   |
+help: Remove argument
+29 |     return item
+30 | 
+31 | 
+   - @app.post("/items/", response_model=Dict[str, Item])
+32 + @app.post("/items/")
+33 | async def create_item(item: Item) -> Dict[str, Item]:
+34 |     return item
+35 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:37:22
+   |
+37 | @app.post("/items/", response_model=str)
+   |                      ^^^^^^^^^^^^^^^^^^
+38 | async def create_item(item: Item) -> str:
+39 |     return item
+   |
+help: Remove argument
+34 |     return item
+35 | 
+36 | 
+   - @app.post("/items/", response_model=str)
+37 + @app.post("/items/")
+38 | async def create_item(item: Item) -> str:
+39 |     return item
+40 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:42:21
+   |
+42 | @app.get("/items/", response_model=Item)
+   |                     ^^^^^^^^^^^^^^^^^^^
+43 | async def create_item(item: Item) -> Item:
+44 |     return item
+   |
+help: Remove argument
+39 |     return item
+40 | 
+41 | 
+   - @app.get("/items/", response_model=Item)
+42 + @app.get("/items/")
+43 | async def create_item(item: Item) -> Item:
+44 |     return item
+45 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:47:21
+   |
+47 | @app.get("/items/", response_model=Item)
+   |                     ^^^^^^^^^^^^^^^^^^^
+48 | @app.post("/items/", response_model=Item)
+49 | async def create_item(item: Item) -> Item:
+   |
+help: Remove argument
+44 |     return item
+45 | 
+46 | 
+   - @app.get("/items/", response_model=Item)
+47 + @app.get("/items/")
+48 | @app.post("/items/", response_model=Item)
+49 | async def create_item(item: Item) -> Item:
+50 |     return item
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:48:22
+   |
+47 | @app.get("/items/", response_model=Item)
+48 | @app.post("/items/", response_model=Item)
+   |                      ^^^^^^^^^^^^^^^^^^^
+49 | async def create_item(item: Item) -> Item:
+50 |     return item
+   |
+help: Remove argument
+45 | 
+46 | 
+47 | @app.get("/items/", response_model=Item)
+   - @app.post("/items/", response_model=Item)
+48 + @app.post("/items/")
+49 | async def create_item(item: Item) -> Item:
+50 |     return item
+51 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+  --> FAST001.py:53:24
+   |
+53 | @router.get("/items/", response_model=Item)
+   |                        ^^^^^^^^^^^^^^^^^^^
+54 | async def create_item(item: Item) -> Item:
+55 |     return item
+   |
+help: Remove argument
+50 |     return item
+51 | 
+52 | 
+   - @router.get("/items/", response_model=Item)
+53 + @router.get("/items/")
+54 | async def create_item(item: Item) -> Item:
+55 |     return item
+56 | 
+note: This is an unsafe fix and may change runtime behavior
+
+FAST001 [*] FastAPI route with redundant `response_model` argument
+   --> FAST001.py:118:23
+    |
+116 | def setup_app(app_arg: FastAPI, non_app: str) -> None:
+117 |     # Error
+118 |     @app_arg.get("/", response_model=str)
+    |                       ^^^^^^^^^^^^^^^^^^
+119 |     async def get_root() -> str:
+120 |         return "Hello World!"
+    |
+help: Remove argument
+115 | 
+116 | def setup_app(app_arg: FastAPI, non_app: str) -> None:
+117 |     # Error
+    -     @app_arg.get("/", response_model=str)
+118 +     @app_arg.get("/")
+119 |     async def get_root() -> str:
+120 |         return "Hello World!"
+121 | 
+note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/fastapi/snapshots/ruff_linter__rules__fastapi__tests__fast-api-unused-path-parameter_FAST003.py.snap

@@ -324,6 +324,26 @@ help: Add `name` to function signature
 91 | 
 note: This is an unsafe fix and may change runtime behavior
 
+FAST003 [*] Parameter `thing_id` appears in route path, but not in `single` signature
+   --> FAST003.py:158:19
+    |
+157 | ### Errors
+158 | @app.get("/things/{thing_id}")
+    |                   ^^^^^^^^^^
+159 | async def single(other: Annotated[str, Depends(something_else)]): ...
+160 | @app.get("/things/{thing_id}")
+    |
+help: Add `thing_id` to function signature
+156 | 
+157 | ### Errors
+158 | @app.get("/things/{thing_id}")
+    - async def single(other: Annotated[str, Depends(something_else)]): ...
+159 + async def single(other: Annotated[str, Depends(something_else)], thing_id): ...
+160 | @app.get("/things/{thing_id}")
+161 | async def default(other: str = Depends(something_else)): ...
+162 | 
+note: This is an unsafe fix and may change runtime behavior
+
 FAST003 [*] Parameter `thing_id` appears in route path, but not in `default` signature
    --> FAST003.py:160:19
     |
@@ -344,6 +364,47 @@ help: Add `thing_id` to function signature
 164 | ### No errors
 note: This is an unsafe fix and may change runtime behavior
 
+FAST003 [*] Parameter `id` appears in route path, but not in `get_id_pydantic_full` signature
+   --> FAST003.py:197:12
+    |
+196 | # Errors
+197 | @app.get("/{id}")
+    |            ^^^^
+198 | async def get_id_pydantic_full(
+199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
+    |
+help: Add `id` to function signature
+196 | # Errors
+197 | @app.get("/{id}")
+198 | async def get_id_pydantic_full(
+    -     params: Annotated[PydanticParams, Depends(PydanticParams)],
+199 +     params: Annotated[PydanticParams, Depends(PydanticParams)], id,
+200 | ): ...
+201 | @app.get("/{id}")
+202 | async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
+note: This is an unsafe fix and may change runtime behavior
+
+FAST003 [*] Parameter `id` appears in route path, but not in `get_id_pydantic_short` signature
+   --> FAST003.py:201:12
+    |
+199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
+200 | ): ...
+201 | @app.get("/{id}")
+    |            ^^^^
+202 | async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
+203 | @app.get("/{id}")
+    |
+help: Add `id` to function signature
+199 |     params: Annotated[PydanticParams, Depends(PydanticParams)],
+200 | ): ...
+201 | @app.get("/{id}")
+    - async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
+202 + async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()], id): ...
+203 | @app.get("/{id}")
+204 | async def get_id_init_not_annotated(params = Depends(InitParams)): ...
+205 | 
+note: This is an unsafe fix and may change runtime behavior
+
 FAST003 [*] Parameter `id` appears in route path, but not in `get_id_init_not_annotated` signature
    --> FAST003.py:203:12
     |

crates/ruff_linter/src/rules/flake8_bandit/rules/suspicious_function_call.rs

@@ -1091,12 +1091,9 @@ fn suspicious_function(
         ] => checker.report_diagnostic_if_enabled(SuspiciousInsecureCipherModeUsage, range),
 
         // Mktemp
-        ["tempfile", "mktemp"] => checker
-            .report_diagnostic_if_enabled(SuspiciousMktempUsage, range)
-            .map(|mut diagnostic| {
-                diagnostic.add_primary_tag(ruff_db::diagnostic::DiagnosticTag::Deprecated);
-                diagnostic
-            }),
+        ["tempfile", "mktemp"] => {
+            checker.report_diagnostic_if_enabled(SuspiciousMktempUsage, range)
+        }
 
         // Eval
         ["" | "builtins", "eval"] => {

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S602_S602.py.snap

@@ -127,44 +127,3 @@ S602 `subprocess` call with `shell=True` identified, security issue
 21 |
 22 | # Check dict display with only double-starred expressions can be falsey.
    |
-
-S602 `subprocess` call with truthy `shell` seems safe, but may be changed in the future; consider rewriting without `shell`
-  --> S602.py:38:1
-   |
-37 | # Additional truthiness cases for generator, lambda, and f-strings
-38 | Popen("true", shell=(i for i in ()))
-   | ^^^^^
-39 | Popen("true", shell=lambda: 0)
-40 | Popen("true", shell=f"{b''}")
-   |
-
-S602 `subprocess` call with truthy `shell` seems safe, but may be changed in the future; consider rewriting without `shell`
-  --> S602.py:39:1
-   |
-37 | # Additional truthiness cases for generator, lambda, and f-strings
-38 | Popen("true", shell=(i for i in ()))
-39 | Popen("true", shell=lambda: 0)
-   | ^^^^^
-40 | Popen("true", shell=f"{b''}")
-41 | x = 1
-   |
-
-S602 `subprocess` call with truthy `shell` seems safe, but may be changed in the future; consider rewriting without `shell`
-  --> S602.py:40:1
-   |
-38 | Popen("true", shell=(i for i in ()))
-39 | Popen("true", shell=lambda: 0)
-40 | Popen("true", shell=f"{b''}")
-   | ^^^^^
-41 | x = 1
-42 | Popen("true", shell=f"{x=}")
-   |
-
-S602 `subprocess` call with truthy `shell` seems safe, but may be changed in the future; consider rewriting without `shell`
-  --> S602.py:42:1
-   |
-40 | Popen("true", shell=f"{b''}")
-41 | x = 1
-42 | Popen("true", shell=f"{x=}")
-   | ^^^^^
-   |

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S604_S604.py.snap

@@ -9,85 +9,3 @@ S604 Function call with `shell=True` parameter identified, security issue
 6 |
 7 | foo(shell={**{}})
   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:11:1
-   |
-10 | # Truthy non-bool values for `shell`
-11 | foo(shell=(i for i in ()))
-   | ^^^
-12 | foo(shell=lambda: 0)
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:12:1
-   |
-10 | # Truthy non-bool values for `shell`
-11 | foo(shell=(i for i in ()))
-12 | foo(shell=lambda: 0)
-   | ^^^
-13 |
-14 | # f-strings guaranteed non-empty
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:15:1
-   |
-14 | # f-strings guaranteed non-empty
-15 | foo(shell=f"{b''}")
-   | ^^^
-16 | x = 1
-17 | foo(shell=f"{x=}")
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:17:1
-   |
-15 | foo(shell=f"{b''}")
-16 | x = 1
-17 | foo(shell=f"{x=}")
-   | ^^^
-18 |
-19 | # Additional truthiness cases for generator, lambda, and f-strings
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:20:1
-   |
-19 | # Additional truthiness cases for generator, lambda, and f-strings
-20 | foo(shell=(i for i in ()))
-   | ^^^
-21 | foo(shell=lambda: 0)
-22 | foo(shell=f"{b''}")
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:21:1
-   |
-19 | # Additional truthiness cases for generator, lambda, and f-strings
-20 | foo(shell=(i for i in ()))
-21 | foo(shell=lambda: 0)
-   | ^^^
-22 | foo(shell=f"{b''}")
-23 | x = 1
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:22:1
-   |
-20 | foo(shell=(i for i in ()))
-21 | foo(shell=lambda: 0)
-22 | foo(shell=f"{b''}")
-   | ^^^
-23 | x = 1
-24 | foo(shell=f"{x=}")
-   |
-
-S604 Function call with truthy `shell` parameter identified, security issue
-  --> S604.py:24:1
-   |
-22 | foo(shell=f"{b''}")
-23 | x = 1
-24 | foo(shell=f"{x=}")
-   | ^^^
-   |

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S609_S609.py.snap

@@ -43,44 +43,3 @@ S609 Possible wildcard injection in call due to `*` usage
  9 |
 10 | subprocess.Popen(["chmod", "+w", "*.py"], shell={**{}})
    |
-
-S609 Possible wildcard injection in call due to `*` usage
-  --> S609.py:14:18
-   |
-13 | # Additional truthiness cases for generator, lambda, and f-strings
-14 | subprocess.Popen("chmod +w foo*", shell=(i for i in ()))
-   |                  ^^^^^^^^^^^^^^^
-15 | subprocess.Popen("chmod +w foo*", shell=lambda: 0)
-16 | subprocess.Popen("chmod +w foo*", shell=f"{b''}")
-   |
-
-S609 Possible wildcard injection in call due to `*` usage
-  --> S609.py:15:18
-   |
-13 | # Additional truthiness cases for generator, lambda, and f-strings
-14 | subprocess.Popen("chmod +w foo*", shell=(i for i in ()))
-15 | subprocess.Popen("chmod +w foo*", shell=lambda: 0)
-   |                  ^^^^^^^^^^^^^^^
-16 | subprocess.Popen("chmod +w foo*", shell=f"{b''}")
-17 | x = 1
-   |
-
-S609 Possible wildcard injection in call due to `*` usage
-  --> S609.py:16:18
-   |
-14 | subprocess.Popen("chmod +w foo*", shell=(i for i in ()))
-15 | subprocess.Popen("chmod +w foo*", shell=lambda: 0)
-16 | subprocess.Popen("chmod +w foo*", shell=f"{b''}")
-   |                  ^^^^^^^^^^^^^^^
-17 | x = 1
-18 | subprocess.Popen("chmod +w foo*", shell=f"{x=}")
-   |
-
-S609 Possible wildcard injection in call due to `*` usage
-  --> S609.py:18:18
-   |
-16 | subprocess.Popen("chmod +w foo*", shell=f"{b''}")
-17 | x = 1
-18 | subprocess.Popen("chmod +w foo*", shell=f"{x=}")
-   |                  ^^^^^^^^^^^^^^^
-   |

crates/ruff_linter/src/rules/flake8_bugbear/mod.rs

@@ -47,7 +47,6 @@ mod tests {
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_6.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_7.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_8.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_9.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_B008.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_1.pyi"))]
     #[test_case(Rule::NoExplicitStacklevel, Path::new("B028.py"))]
@@ -84,17 +83,6 @@ mod tests {
     }
 
     #[test_case(Rule::MapWithoutExplicitStrict, Path::new("B912.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_1.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_2.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_3.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_4.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_5.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_6.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_7.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_8.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_9.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_B008.py"))]
-    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_1.pyi"))]
     fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> {
         let snapshot = format!(
             "preview__{}_{}",

crates/ruff_linter/src/rules/flake8_bugbear/rules/map_without_explicit_strict.rs

@@ -34,10 +34,9 @@ use crate::{AlwaysFixableViolation, Applicability, Fix};
 /// ```
 ///
 /// ## Fix safety
-/// This rule's fix is marked as unsafe. While adding `strict=False` preserves
-/// the runtime behavior, it can obscure situations where the iterables are of
-/// unequal length. Ruff prefers to alert users so they can choose the intended
-/// behavior themselves.
+/// This rule's fix is marked as unsafe for `map` calls that contain
+/// `**kwargs`, as adding a `strict` keyword argument to such a call may lead
+/// to a duplicate keyword argument error.
 ///
 /// ## References
 /// - [Python documentation: `map`](https://docs.python.org/3/library/functions.html#map)
@@ -74,7 +73,17 @@ pub(crate) fn map_without_explicit_strict(checker: &Checker, call: &ast::ExprCal
                     checker.comment_ranges(),
                     checker.locator().contents(),
                 ),
-                Applicability::Unsafe,
+                // If the function call contains `**kwargs`, mark the fix as unsafe.
+                if call
+                    .arguments
+                    .keywords
+                    .iter()
+                    .any(|keyword| keyword.arg.is_none())
+                {
+                    Applicability::Unsafe
+                } else {
+                    Applicability::Safe
+                },
             ));
     }
 }

crates/ruff_linter/src/rules/flake8_bugbear/rules/mutable_argument_default.rs

@@ -3,8 +3,9 @@ use std::fmt::Write;
 use ruff_macros::{ViolationMetadata, derive_message_formats};
 use ruff_python_ast::helpers::is_docstring_stmt;
 use ruff_python_ast::name::QualifiedName;
-use ruff_python_ast::parenthesize::parenthesized_range;
-use ruff_python_ast::{self as ast, Expr, ParameterWithDefault};
+use ruff_python_ast::{self as ast, Expr, Parameter};
+use ruff_python_codegen::{Generator, Stylist};
+use ruff_python_index::Indexer;
 use ruff_python_semantic::SemanticModel;
 use ruff_python_semantic::analyze::function_type::is_stub;
 use ruff_python_semantic::analyze::typing::{is_immutable_annotation, is_mutable_expr};
@@ -12,11 +13,8 @@ use ruff_python_trivia::{indentation_at_offset, textwrap};
 use ruff_source_file::LineRanges;
 use ruff_text_size::Ranged;
 
+use crate::Locator;
 use crate::checkers::ast::Checker;
-use crate::preview::{
-    is_b006_check_guaranteed_mutable_expr_enabled,
-    is_b006_unsafe_fix_preserve_assignment_expr_enabled,
-};
 use crate::{Edit, Fix, FixAvailability, Violation};
 
 /// ## What it does
@@ -113,12 +111,8 @@ pub(crate) fn mutable_argument_default(checker: &Checker, function_def: &ast::St
             .iter()
             .map(|target| QualifiedName::from_dotted_name(target))
             .collect();
-        let is_mut_expr = if is_b006_check_guaranteed_mutable_expr_enabled(checker.settings()) {
-            is_guaranteed_mutable_expr(default, checker.semantic())
-        } else {
-            is_mutable_expr(default, checker.semantic())
-        };
-        if is_mut_expr
+
+        if is_mutable_expr(default, checker.semantic())
             && !parameter.annotation().is_some_and(|expr| {
                 is_immutable_annotation(expr, checker.semantic(), extend_immutable_calls.as_slice())
             })
@@ -126,37 +120,35 @@ pub(crate) fn mutable_argument_default(checker: &Checker, function_def: &ast::St
             let mut diagnostic = checker.report_diagnostic(MutableArgumentDefault, default.range());
 
             // If the function body is on the same line as the function def, do not fix
-            if let Some(fix) = move_initialization(function_def, parameter, default, checker) {
+            if let Some(fix) = move_initialization(
+                function_def,
+                &parameter.parameter,
+                default,
+                checker.semantic(),
+                checker.locator(),
+                checker.stylist(),
+                checker.indexer(),
+                checker.generator(),
+            ) {
                 diagnostic.set_fix(fix);
             }
         }
     }
 }
 
-/// Returns `true` if the expression is guaranteed to create a mutable object.
-fn is_guaranteed_mutable_expr(expr: &Expr, semantic: &SemanticModel) -> bool {
-    match expr {
-        Expr::Generator(_) => true,
-        Expr::Tuple(ast::ExprTuple { elts, .. }) => {
-            elts.iter().any(|e| is_guaranteed_mutable_expr(e, semantic))
-        }
-        Expr::Named(ast::ExprNamed { value, .. }) => is_guaranteed_mutable_expr(value, semantic),
-        _ => is_mutable_expr(expr, semantic),
-    }
-}
-
 /// Generate a [`Fix`] to move a mutable argument default initialization
 /// into the function body.
+#[expect(clippy::too_many_arguments)]
 fn move_initialization(
     function_def: &ast::StmtFunctionDef,
-    parameter: &ParameterWithDefault,
+    parameter: &Parameter,
     default: &Expr,
-    checker: &Checker,
+    semantic: &SemanticModel,
+    locator: &Locator,
+    stylist: &Stylist,
+    indexer: &Indexer,
+    generator: Generator,
 ) -> Option<Fix> {
-    let indexer = checker.indexer();
-    let locator = checker.locator();
-    let stylist = checker.stylist();
-
     let mut body = function_def.body.iter().peekable();
 
     // Avoid attempting to fix single-line functions.
@@ -165,52 +157,25 @@ fn move_initialization(
         return None;
     }
 
-    let range = match parenthesized_range(
-        default.into(),
-        parameter.into(),
-        checker.comment_ranges(),
-        checker.source(),
-    ) {
-        Some(range) => range,
-        None => default.range(),
-    };
     // Set the default argument value to `None`.
-    let default_edit = Edit::range_replacement("None".to_string(), range);
+    let default_edit = Edit::range_replacement("None".to_string(), default.range());
 
     // If the function is a stub, this is the only necessary edit.
-    if is_stub(function_def, checker.semantic()) {
+    if is_stub(function_def, semantic) {
         return Some(Fix::unsafe_edit(default_edit));
     }
 
     // Add an `if`, to set the argument to its original value if still `None`.
     let mut content = String::new();
-    let _ = write!(&mut content, "if {} is None:", parameter.parameter.name());
+    let _ = write!(&mut content, "if {} is None:", parameter.name());
     content.push_str(stylist.line_ending().as_str());
     content.push_str(stylist.indentation());
-    if is_b006_unsafe_fix_preserve_assignment_expr_enabled(checker.settings()) {
-        let _ = write!(
-            &mut content,
-            "{} = {}",
-            parameter.parameter.name(),
-            locator.slice(
-                parenthesized_range(
-                    default.into(),
-                    parameter.into(),
-                    checker.comment_ranges(),
-                    checker.source()
-                )
-                .unwrap_or(default.range())
-            )
-        );
-    } else {
-        let _ = write!(
-            &mut content,
-            "{} = {}",
-            parameter.name(),
-            checker.generator().expr(default)
-        );
-    }
-
+    let _ = write!(
+        &mut content,
+        "{} = {}",
+        parameter.name(),
+        generator.expr(default)
+    );
     content.push_str(stylist.line_ending().as_str());
 
     // Determine the indentation depth of the function body.

crates/ruff_linter/src/rules/flake8_bugbear/rules/zip_without_explicit_strict.rs

@@ -31,10 +31,9 @@ use crate::{AlwaysFixableViolation, Applicability, Fix};
 /// ```
 ///
 /// ## Fix safety
-/// This rule's fix is marked as unsafe. While adding `strict=False` preserves
-/// the runtime behavior, it can obscure situations where the iterables are of
-/// unequal length. Ruff prefers to alert users so they can choose the intended
-/// behavior themselves.
+/// This rule's fix is marked as unsafe for `zip` calls that contain
+/// `**kwargs`, as adding a `strict` keyword argument to such a call may lead
+/// to a duplicate keyword argument error.
 ///
 /// ## References
 /// - [Python documentation: `zip`](https://docs.python.org/3/library/functions.html#zip)
@@ -69,7 +68,17 @@ pub(crate) fn zip_without_explicit_strict(checker: &Checker, call: &ast::ExprCal
                     checker.comment_ranges(),
                     checker.locator().contents(),
                 ),
-                Applicability::Unsafe,
+                // If the function call contains `**kwargs`, mark the fix as unsafe.
+                if call
+                    .arguments
+                    .keywords
+                    .iter()
+                    .any(|keyword| keyword.arg.is_none())
+                {
+                    Applicability::Unsafe
+                } else {
+                    Applicability::Safe
+                },
             ));
     }
 }

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B006_B006_9.py.snap

@@ -1,22 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_9.py:17:11
-   |
-17 | def f5(x=([1, ])):
-   |           ^^^^^
-18 |     print(x)
-   |
-help: Replace with `None`; initialize within function
-14 |     print(x)
-15 | 
-16 | 
-   - def f5(x=([1, ])):
-17 + def f5(x=None):
-18 +     if x is None:
-19 +         x = [1]
-20 |     print(x)
-21 | 
-22 | 
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B905.py.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
-assertion_line: 156
 ---
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:4:1
@@ -20,7 +19,6 @@ help: Add explicit value for parameter `strict=`
 5 | zip(range(3))
 6 | zip("a", "b")
 7 | zip("a", "b", *zip("c"))
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:5:1
@@ -41,7 +39,6 @@ help: Add explicit value for parameter `strict=`
 6 | zip("a", "b")
 7 | zip("a", "b", *zip("c"))
 8 | zip(zip("a"), strict=False)
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:6:1
@@ -62,7 +59,6 @@ help: Add explicit value for parameter `strict=`
 7 | zip("a", "b", *zip("c"))
 8 | zip(zip("a"), strict=False)
 9 | zip(zip("a", strict=True))
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:7:1
@@ -83,7 +79,6 @@ help: Add explicit value for parameter `strict=`
 8  | zip(zip("a"), strict=False)
 9  | zip(zip("a", strict=True))
 10 | 
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:7:16
@@ -104,7 +99,6 @@ help: Add explicit value for parameter `strict=`
 8  | zip(zip("a"), strict=False)
 9  | zip(zip("a", strict=True))
 10 | 
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
  --> B905.py:8:5
@@ -124,7 +118,6 @@ help: Add explicit value for parameter `strict=`
 9  | zip(zip("a", strict=True))
 10 | 
 11 | # OK
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
   --> B905.py:9:1
@@ -145,7 +138,6 @@ help: Add explicit value for parameter `strict=`
 10 | 
 11 | # OK
 12 | zip(range(3), strict=True)
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
   --> B905.py:24:1
@@ -164,7 +156,6 @@ help: Add explicit value for parameter `strict=`
 25 | zip([1, 2, 3], repeat(1, times=4))
 26 | 
 27 | import builtins
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
   --> B905.py:25:1
@@ -185,7 +176,6 @@ help: Add explicit value for parameter `strict=`
 26 | 
 27 | import builtins
 28 | # Still an error even though it uses the qualified name
-note: This is an unsafe fix and may change runtime behavior
 
 B905 [*] `zip()` without an explicit `strict=` parameter
   --> B905.py:29:1
@@ -201,4 +191,3 @@ help: Add explicit value for parameter `strict=`
 28 | # Still an error even though it uses the qualified name
    - builtins.zip([1, 2, 3])
 29 + builtins.zip([1, 2, 3], strict=False)
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_1.py.snap

@@ -1,21 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_1.py:3:22
-  |
-1 | # Docstring followed by a newline
-2 |
-3 | def foobar(foor, bar={}):    
-  |                      ^^
-4 |     """
-5 |     """
-  |
-help: Replace with `None`; initialize within function
-1 | # Docstring followed by a newline
-2 | 
-  - def foobar(foor, bar={}):    
-3 + def foobar(foor, bar=None):    
-4 |     """
-5 |     """
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_1.pyi.snap

@@ -1,4 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_2.py.snap

@@ -1,22 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_2.py:4:22
-  |
-2 | # Regression test for https://github.com/astral-sh/ruff/issues/7155
-3 |
-4 | def foobar(foor, bar={}):    
-  |                      ^^
-5 |     """
-6 |     """                    
-  |
-help: Replace with `None`; initialize within function
-1 | # Docstring followed by whitespace with no newline
-2 | # Regression test for https://github.com/astral-sh/ruff/issues/7155
-3 | 
-  - def foobar(foor, bar={}):    
-4 + def foobar(foor, bar=None):    
-5 |     """
-6 |     """                    
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_3.py.snap

@@ -1,20 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_3.py:4:22
-  |
-4 | def foobar(foor, bar={}):    
-  |                      ^^
-5 |     """
-6 |     """
-  |
-help: Replace with `None`; initialize within function
-1 | # Docstring with no newline
-2 | 
-3 | 
-  - def foobar(foor, bar={}):    
-4 + def foobar(foor, bar=None):    
-5 |     """
-6 |     """
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_4.py.snap

@@ -1,22 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_4.py:7:26
-  |
-6 | class FormFeedIndent:
-7 |    def __init__(self, a=[]):
-  |                         ^^
-8 |         print(a)
-  |
-help: Replace with `None`; initialize within function
-4  | 
-5  | 
-6  | class FormFeedIndent:
-   -    def __init__(self, a=[]):
-7  +    def __init__(self, a=None):
-8  +         if a is None:
-9  +          a = []
-10 |         print(a)
-11 | 
-note: This is an unsafe fix and may change runtime behavior

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_5.py.snap

@@ -1,314 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_5.py:5:49
-  |
-5 | def import_module_wrong(value: dict[str, str] = {}):
-  |                                                 ^^
-6 |     import os
-  |
-help: Replace with `None`; initialize within function
-2  | # https://github.com/astral-sh/ruff/issues/7616
-3  | 
-4  | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-5  + def import_module_wrong(value: dict[str, str] = None):
-6  |     import os
-7  +     if value is None:
-8  +         value = {}
-9  | 
-10 | 
-11 | def import_module_with_values_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:9:61
-   |
- 9 | def import_module_with_values_wrong(value: dict[str, str] = {}):
-   |                                                             ^^
-10 |     import os
-   |
-help: Replace with `None`; initialize within function
-6  |     import os
-7  | 
-8  | 
-   - def import_module_with_values_wrong(value: dict[str, str] = {}):
-9  + def import_module_with_values_wrong(value: dict[str, str] = None):
-10 |     import os
-11 | 
-12 +     if value is None:
-13 +         value = {}
-14 |     return 2
-15 | 
-16 | 
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:15:50
-   |
-15 | def import_modules_wrong(value: dict[str, str] = {}):
-   |                                                  ^^
-16 |     import os
-17 |     import sys
-   |
-help: Replace with `None`; initialize within function
-12 |     return 2
-13 | 
-14 | 
-   - def import_modules_wrong(value: dict[str, str] = {}):
-15 + def import_modules_wrong(value: dict[str, str] = None):
-16 |     import os
-17 |     import sys
-18 |     import itertools
-19 +     if value is None:
-20 +         value = {}
-21 | 
-22 | 
-23 | def from_import_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:21:54
-   |
-21 | def from_import_module_wrong(value: dict[str, str] = {}):
-   |                                                      ^^
-22 |     from os import path
-   |
-help: Replace with `None`; initialize within function
-18 |     import itertools
-19 | 
-20 | 
-   - def from_import_module_wrong(value: dict[str, str] = {}):
-21 + def from_import_module_wrong(value: dict[str, str] = None):
-22 |     from os import path
-23 +     if value is None:
-24 +         value = {}
-25 | 
-26 | 
-27 | def from_imports_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:25:55
-   |
-25 | def from_imports_module_wrong(value: dict[str, str] = {}):
-   |                                                       ^^
-26 |     from os import path
-27 |     from sys import version_info
-   |
-help: Replace with `None`; initialize within function
-22 |     from os import path
-23 | 
-24 | 
-   - def from_imports_module_wrong(value: dict[str, str] = {}):
-25 + def from_imports_module_wrong(value: dict[str, str] = None):
-26 |     from os import path
-27 |     from sys import version_info
-28 +     if value is None:
-29 +         value = {}
-30 | 
-31 | 
-32 | def import_and_from_imports_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:30:66
-   |
-30 | def import_and_from_imports_module_wrong(value: dict[str, str] = {}):
-   |                                                                  ^^
-31 |     import os
-32 |     from sys import version_info
-   |
-help: Replace with `None`; initialize within function
-27 |     from sys import version_info
-28 | 
-29 | 
-   - def import_and_from_imports_module_wrong(value: dict[str, str] = {}):
-30 + def import_and_from_imports_module_wrong(value: dict[str, str] = None):
-31 |     import os
-32 |     from sys import version_info
-33 +     if value is None:
-34 +         value = {}
-35 | 
-36 | 
-37 | def import_docstring_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:35:59
-   |
-35 | def import_docstring_module_wrong(value: dict[str, str] = {}):
-   |                                                           ^^
-36 |     """Docstring"""
-37 |     import os
-   |
-help: Replace with `None`; initialize within function
-32 |     from sys import version_info
-33 | 
-34 | 
-   - def import_docstring_module_wrong(value: dict[str, str] = {}):
-35 + def import_docstring_module_wrong(value: dict[str, str] = None):
-36 |     """Docstring"""
-37 |     import os
-38 +     if value is None:
-39 +         value = {}
-40 | 
-41 | 
-42 | def import_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:40:49
-   |
-40 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-41 |     """Docstring"""
-42 |     import os; import sys
-   |
-help: Replace with `None`; initialize within function
-37 |     import os
-38 | 
-39 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-40 + def import_module_wrong(value: dict[str, str] = None):
-41 |     """Docstring"""
-42 |     import os; import sys
-43 +     if value is None:
-44 +         value = {}
-45 | 
-46 | 
-47 | def import_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:45:49
-   |
-45 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-46 |     """Docstring"""
-47 |     import os; import sys; x = 1
-   |
-help: Replace with `None`; initialize within function
-42 |     import os; import sys
-43 | 
-44 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-45 + def import_module_wrong(value: dict[str, str] = None):
-46 |     """Docstring"""
-47 +     if value is None:
-48 +         value = {}
-49 |     import os; import sys; x = 1
-50 | 
-51 | 
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:50:49
-   |
-50 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-51 |     """Docstring"""
-52 |     import os; import sys
-   |
-help: Replace with `None`; initialize within function
-47 |     import os; import sys; x = 1
-48 | 
-49 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-50 + def import_module_wrong(value: dict[str, str] = None):
-51 |     """Docstring"""
-52 |     import os; import sys
-53 +     if value is None:
-54 +         value = {}
-55 | 
-56 | 
-57 | def import_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:55:49
-   |
-55 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-56 |     import os; import sys
-   |
-help: Replace with `None`; initialize within function
-52 |     import os; import sys
-53 | 
-54 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-55 + def import_module_wrong(value: dict[str, str] = None):
-56 |     import os; import sys
-57 +     if value is None:
-58 +         value = {}
-59 | 
-60 | 
-61 | def import_module_wrong(value: dict[str, str] = {}):
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:59:49
-   |
-59 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-60 |     import os; import sys; x = 1
-   |
-help: Replace with `None`; initialize within function
-56 |     import os; import sys
-57 | 
-58 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-59 + def import_module_wrong(value: dict[str, str] = None):
-60 +     if value is None:
-61 +         value = {}
-62 |     import os; import sys; x = 1
-63 | 
-64 | 
-note: This is an unsafe fix and may change runtime behavior
-
-B006 [*] Do not use mutable data structures for argument defaults
-  --> B006_5.py:63:49
-   |
-63 | def import_module_wrong(value: dict[str, str] = {}):
-   |                                                 ^^
-64 |     import os; import sys
-   |
-help: Replace with `None`; initialize within function
-60 |     import os; import sys; x = 1
-61 | 
-62 | 
-   - def import_module_wrong(value: dict[str, str] = {}):
-63 + def import_module_wrong(value: dict[str, str] = None):
-64 |     import os; import sys
-65 +     if value is None:
-66 +         value = {}
-67 | 
-68 | 
-69 | def import_module_wrong(value: dict[str, str] = {}): import os
-note: This is an unsafe fix and may change runtime behavior
-
-B006 Do not use mutable data structures for argument defaults
-  --> B006_5.py:67:49
-   |
-67 | def import_module_wrong(value: dict[str, str] = {}): import os
-   |                                                 ^^
-   |
-help: Replace with `None`; initialize within function
-
-B006 Do not use mutable data structures for argument defaults
-  --> B006_5.py:70:49
-   |
-70 | def import_module_wrong(value: dict[str, str] = {}): import os; import sys
-   |                                                 ^^
-   |
-help: Replace with `None`; initialize within function
-
-B006 Do not use mutable data structures for argument defaults
-  --> B006_5.py:73:49
-   |
-73 | def import_module_wrong(value: dict[str, str] = {}): \
-   |                                                 ^^
-74 |     import os
-   |
-help: Replace with `None`; initialize within function

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B006_B006_6.py.snap

@@ -1,23 +0,0 @@
----
-source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
----
-B006 [*] Do not use mutable data structures for argument defaults
- --> B006_6.py:4:22
-  |
-2 | # Same as B006_2.py, but import instead of docstring
-3 |
-4 | def foobar(foor, bar={}):    
-  |                      ^^
-5 |     import os                    
-  |
-help: Replace with `None`; initialize within function
-1 | # Import followed by whitespace with no newline
-2 | # Same as B006_2.py, but import instead of docstring
-3 | 
-  - def foobar(foor, bar={}):    
-  -     import os                    
-4 + def foobar(foor, bar=None):    
-5 +     import os                    
-6 +     if bar is None:
-7 +         bar = {}
-note: This is an unsafe fix and may change runtime behavior