post-commit

This ensures that changes to the targets are intentional and explicit.

See also https://github.com/astral-sh/ty/pull/2393
and https://github.com/astral-sh/uv/pull/17358

.github/CODEOWNERS

@@ -20,9 +20,11 @@
 # ty
 /crates/ty* @carljm @MichaReiser @AlexWaygood @sharkdp @dcreager
 /crates/ruff_db/ @carljm @MichaReiser @sharkdp @dcreager
-/crates/ty_project/ @carljm @MichaReiser @sharkdp @dcreager
-/crates/ty_server/ @carljm @MichaReiser @sharkdp @dcreager
+/crates/ty_project/ @carljm @MichaReiser @sharkdp @dcreager @Gankra
+/crates/ty_ide/ @carljm @MichaReiser @AlexWaygood @sharkdp @dcreager @Gankra
+/crates/ty_server/ @carljm @MichaReiser @sharkdp @dcreager @Gankra
 /crates/ty/ @carljm @MichaReiser @sharkdp @dcreager
-/crates/ty_wasm/ @carljm @MichaReiser @sharkdp @dcreager
+/crates/ty_wasm/ @carljm @MichaReiser @sharkdp @dcreager @Gankra
 /scripts/ty_benchmark/ @carljm @MichaReiser @AlexWaygood @sharkdp @dcreager
-/crates/ty_python_semantic @carljm @AlexWaygood @sharkdp @dcreager
+/crates/ty_python_semantic/ @carljm @AlexWaygood @sharkdp @dcreager
+/crates/ty_module_resolver/ @carljm @MichaReiser @AlexWaygood @Gankra

.github/mypy-primer-ty.toml

@@ -5,5 +5,4 @@
 [rules]
 possibly-unresolved-reference = "warn"
 possibly-missing-import = "warn"
-unused-ignore-comment = "warn"
 division-by-zero = "warn"

.github/workflows/build-binaries.yml

@@ -51,6 +51,7 @@ jobs:
       - name: "Build sdist"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           command: sdist
           args: --out dist
       - name: "Test sdist"
@@ -81,8 +82,9 @@ jobs:
       - name: "Build wheels - x86_64"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: x86_64
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
       - name: "Upload wheels"
         uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
@@ -123,8 +125,9 @@ jobs:
       - name: "Build wheels - aarch64"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: aarch64
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
       - name: "Test wheel - aarch64"
         run: |
           pip install dist/"${PACKAGE_NAME}"-*.whl --force-reinstall
@@ -179,8 +182,9 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: ${{ matrix.platform.target }}
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
         env:
           # aarch64 build fails, see https://github.com/PyO3/maturin/issues/2110
           XWIN_VERSION: 16
@@ -232,9 +236,10 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: ${{ matrix.target }}
-          manylinux: auto
-          args: --release --locked --out dist
+          manylinux: 2_17
+          args: --release --locked --out dist --compatibility pypi
       - name: "Test wheel"
         if: ${{ startsWith(matrix.target, 'x86_64') }}
         run: |
@@ -275,25 +280,34 @@ jobs:
         platform:
           - target: aarch64-unknown-linux-gnu
             arch: aarch64
+            manylinux: 2_17
             # see https://github.com/astral-sh/ruff/issues/3791
             # and https://github.com/gnzlbg/jemallocator/issues/170#issuecomment-1503228963
             maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
           - target: armv7-unknown-linux-gnueabihf
             arch: armv7
+            manylinux: 2_17
           - target: s390x-unknown-linux-gnu
             arch: s390x
+            manylinux: 2_17
           - target: powerpc64le-unknown-linux-gnu
             arch: ppc64le
+            manylinux: 2_17
             # see https://github.com/astral-sh/ruff/issues/10073
             maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
           - target: powerpc64-unknown-linux-gnu
             arch: ppc64
+            manylinux: 2_17
             # see https://github.com/astral-sh/ruff/issues/10073
             maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
           - target: arm-unknown-linux-musleabihf
+            # Use the cross container, but tag as `linux_armv6l`
+            manylinux: auto
             arch: arm
           - target: riscv64gc-unknown-linux-gnu
             arch: riscv64
+            # Minimum manylinux target for riscv64
+            manylinux: 2_31
 
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
@@ -308,10 +322,11 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: ${{ matrix.platform.target }}
-          manylinux: auto
+          manylinux: ${{ matrix.platform.manylinux }}
           docker-options: ${{ matrix.platform.maturin_docker_options }}
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
       - uses: uraimo/run-on-arch-action@d94c13912ea685de38fccc1109385b83fd79427d # v3.0.1
         if: ${{ matrix.platform.arch != 'ppc64' && matrix.platform.arch != 'ppc64le'}}
         name: Test wheel
@@ -374,9 +389,10 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: ${{ matrix.target }}
           manylinux: musllinux_1_2
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
       - name: "Test wheel"
         if: matrix.target == 'x86_64-unknown-linux-musl'
         uses: addnab/docker-run-action@4f65fabd2431ebc8d299f8e5a018d79a769ae185 # v3
@@ -439,9 +455,10 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
         with:
+          maturin-version: v1.11.5
           target: ${{ matrix.platform.target }}
           manylinux: musllinux_1_2
-          args: --release --locked --out dist
+          args: --release --locked --out dist --compatibility pypi
           docker-options: ${{ matrix.platform.maturin_docker_options }}
       - uses: uraimo/run-on-arch-action@d94c13912ea685de38fccc1109385b83fd79427d # v3.0.1
         name: Test wheel

.github/workflows/ci.yaml

@@ -281,11 +281,11 @@ jobs:
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-nextest
       - name: "Install cargo insta"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-insta
       - name: "Install uv"
@@ -343,7 +343,7 @@ jobs:
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-nextest
       - name: "Install uv"
@@ -376,7 +376,7 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
       - name: "Install cargo nextest"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-nextest
       - name: "Install uv"
@@ -468,7 +468,7 @@ jobs:
       - name: "Install mold"
         uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
       - name: "Install cargo-binstall"
-        uses: cargo-bins/cargo-binstall@4a9028576ed64318f7b24193a62695e96dcbe015 # v1.16.5
+        uses: cargo-bins/cargo-binstall@80aaafe04903087c333980fa2686259ddd34b2d9 # v1.16.6
       - 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
@@ -713,7 +713,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
-      - uses: cargo-bins/cargo-binstall@4a9028576ed64318f7b24193a62695e96dcbe015 # v1.16.5
+      - uses: cargo-bins/cargo-binstall@80aaafe04903087c333980fa2686259ddd34b2d9 # v1.16.6
       - run: cargo binstall --no-confirm cargo-shear
       - run: cargo shear
 
@@ -972,7 +972,7 @@ jobs:
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-codspeed
 
@@ -980,7 +980,7 @@ jobs:
         run: cargo codspeed build --features "codspeed,ruff_instrumented" --profile profiling --no-default-features -p ruff_benchmark --bench formatter --bench lexer --bench linter --bench parser
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@346a2d8a8d9d38909abd0bc3d23f773110f076ad # v4.4.1
+        uses: CodSpeedHQ/action@972e3437949c89e1357ebd1a2dbc852fcbc57245 # v4.5.1
         with:
           mode: simulation
           run: cargo codspeed run
@@ -1011,7 +1011,7 @@ jobs:
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-codspeed
 
@@ -1047,7 +1047,7 @@ jobs:
       - uses: astral-sh/setup-uv@681c641aba71e4a1c380be3ab5e12ad51f415867 # v7.1.6
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-codspeed
 
@@ -1061,7 +1061,7 @@ jobs:
         run: chmod +x target/codspeed/simulation/ruff_benchmark/ty
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@346a2d8a8d9d38909abd0bc3d23f773110f076ad # v4.4.1
+        uses: CodSpeedHQ/action@972e3437949c89e1357ebd1a2dbc852fcbc57245 # v4.5.1
         with:
           mode: simulation
           run: cargo codspeed run --bench ty "${{ matrix.benchmark }}"
@@ -1098,7 +1098,7 @@ jobs:
         run: rustup show
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-codspeed
 
@@ -1136,7 +1136,7 @@ jobs:
       - uses: astral-sh/setup-uv@681c641aba71e4a1c380be3ab5e12ad51f415867 # v7.1.6
 
       - name: "Install codspeed"
-        uses: taiki-e/install-action@b9c5db3aef04caffaf95a1d03931de10fb2a140f # v2.65.1
+        uses: taiki-e/install-action@28a9d316db64b78a951f3f8587a5d08cc97ad8eb # v2.65.6
         with:
           tool: cargo-codspeed
 
@@ -1150,7 +1150,7 @@ jobs:
         run: chmod +x target/codspeed/walltime/ruff_benchmark/ty_walltime
 
       - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@346a2d8a8d9d38909abd0bc3d23f773110f076ad # v4.4.1
+        uses: CodSpeedHQ/action@972e3437949c89e1357ebd1a2dbc852fcbc57245 # v4.5.1
         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

.pre-commit-config.yaml

@@ -32,13 +32,13 @@ repos:
       - id: validate-pyproject
 
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.22
+    rev: 1.0.0
     hooks:
       - id: mdformat
         language: python # means renovate will also update `additional_dependencies`
         additional_dependencies:
-          - mdformat-mkdocs==4.0.0
-          - mdformat-footnote==0.1.1
+          - mdformat-mkdocs==5.0.0
+          - mdformat-footnote==0.1.2
         exclude: |
           (?x)^(
             docs/formatter/black\.md

CHANGELOG.md

@@ -1,5 +1,63 @@
 # Changelog
 
+## 0.14.11
+
+Released on 2026-01-08.
+
+### Preview features
+
+- Consolidate diagnostics for matched disable/enable suppression comments ([#22099](https://github.com/astral-sh/ruff/pull/22099))
+- Report diagnostics for invalid/unmatched range suppression comments ([#21908](https://github.com/astral-sh/ruff/pull/21908))
+- \[`airflow`\] Passing positional argument into `airflow.lineage.hook.HookLineageCollector.create_asset` is not allowed (`AIR303`) ([#22046](https://github.com/astral-sh/ruff/pull/22046))
+- \[`refurb`\] Mark `FURB192` fix as always unsafe ([#22210](https://github.com/astral-sh/ruff/pull/22210))
+- \[`ruff`\] Add `non-empty-init-module` (`RUF067`) ([#22143](https://github.com/astral-sh/ruff/pull/22143))
+
+### Bug fixes
+
+- Fix GitHub format for multi-line diagnostics ([#22108](https://github.com/astral-sh/ruff/pull/22108))
+- \[`flake8-unused-arguments`\] Mark `**kwargs` in `TypeVar` as used (`ARG001`) ([#22214](https://github.com/astral-sh/ruff/pull/22214))
+
+### Rule changes
+
+- Add `help:` subdiagnostics for several Ruff rules that can sometimes appear to disagree with `ty` ([#22331](https://github.com/astral-sh/ruff/pull/22331))
+- \[`pylint`\] Demote `PLW1510` fix to display-only ([#22318](https://github.com/astral-sh/ruff/pull/22318))
+- \[`pylint`\] Ignore identical members (`PLR1714`) ([#22220](https://github.com/astral-sh/ruff/pull/22220))
+- \[`pylint`\] Improve diagnostic range for `PLC0206` ([#22312](https://github.com/astral-sh/ruff/pull/22312))
+- \[`ruff`\] Improve fix title for `RUF102` invalid rule code ([#22100](https://github.com/astral-sh/ruff/pull/22100))
+- \[`flake8-simplify`\]: Avoid unnecessary builtins import for `SIM105` ([#22358](https://github.com/astral-sh/ruff/pull/22358))
+
+### Configuration
+
+- Allow Python 3.15 as valid `target-version` value in preview ([#22419](https://github.com/astral-sh/ruff/pull/22419))
+- Check `required-version` before parsing rules ([#22410](https://github.com/astral-sh/ruff/pull/22410))
+- Include configured `src` directories when resolving graphs ([#22451](https://github.com/astral-sh/ruff/pull/22451))
+
+### Documentation
+
+- Update `T201` suggestion to not use root logger to satisfy `LOG015` ([#22059](https://github.com/astral-sh/ruff/pull/22059))
+- Fix `iter` example in unsafe fixes doc ([#22118](https://github.com/astral-sh/ruff/pull/22118))
+- \[`flake8_print`\] better suggestion for `basicConfig` in `T201` docs ([#22101](https://github.com/astral-sh/ruff/pull/22101))
+- \[`pylint`\] Restore the fix safety docs for `PLW0133` ([#22211](https://github.com/astral-sh/ruff/pull/22211))
+- Fix Jupyter notebook discovery info for editors ([#22447](https://github.com/astral-sh/ruff/pull/22447))
+
+### Contributors
+
+- [@charliermarsh](https://github.com/charliermarsh)
+- [@ntBre](https://github.com/ntBre)
+- [@cenviity](https://github.com/cenviity)
+- [@njhearp](https://github.com/njhearp)
+- [@cbachhuber](https://github.com/cbachhuber)
+- [@jelle-openai](https://github.com/jelle-openai)
+- [@AlexWaygood](https://github.com/AlexWaygood)
+- [@ValdonVitija](https://github.com/ValdonVitija)
+- [@BurntSushi](https://github.com/BurntSushi)
+- [@Jkhall81](https://github.com/Jkhall81)
+- [@PeterJCLaw](https://github.com/PeterJCLaw)
+- [@harupy](https://github.com/harupy)
+- [@amyreese](https://github.com/amyreese)
+- [@sjyangkevin](https://github.com/sjyangkevin)
+- [@woodruffw](https://github.com/woodruffw)
+
 ## 0.14.10
 
 Released on 2025-12-18.

CLAUDE.md

@@ -0,0 +1,70 @@
+# Ruff Repository
+
+This repository contains both Ruff (a Python linter and formatter) and ty (a Python type checker). The crates follow a naming convention: `ruff_*` for Ruff-specific code and `ty_*` for ty-specific code. ty reuses several Ruff crates, including the Python parser (`ruff_python_parser`) and AST definitions (`ruff_python_ast`).
+
+## Running Tests
+
+Run all tests (using `nextest` for faster execution):
+
+```sh
+cargo nextest run
+```
+
+For faster test execution, use the `fast-test` profile which enables optimizations while retaining debug info:
+
+```sh
+cargo nextest run --cargo-profile fast-test
+```
+
+Run tests for a specific crate:
+
+```sh
+cargo nextest run -p ty_python_semantic
+```
+
+Run a specific mdtest (use a substring of the test name):
+
+```sh
+MDTEST_TEST_FILTER="<filter>" cargo nextest run -p ty_python_semantic mdtest
+```
+
+Update snapshots after running tests:
+
+```sh
+cargo insta accept
+```
+
+## Running Clippy
+
+```sh
+cargo clippy --workspace --all-targets --all-features -- -D warnings
+```
+
+## Running Debug Builds
+
+Use debug builds (not `--release`) when developing, as release builds lack debug assertions and have slower compile times.
+
+Run Ruff:
+
+```sh
+cargo run --bin ruff -- check path/to/file.py
+```
+
+Run ty:
+
+```sh
+cargo run --bin ty -- check path/to/file.py
+```
+
+## Pull Requests
+
+When working on ty, PR titles should start with `[ty]` and be tagged with the `ty` GitHub label.
+
+## Development Guidelines
+
+- All changes must be tested. If you're not testing your changes, you're not done.
+- Get your tests to pass. If you didn't run the tests, your code does not work.
+- Follow existing code style. Check neighboring files for patterns.
+- Always run `uvx pre-commit run -a` at the end of a task.
+- Avoid writing significant amounts of new code. This is often a sign that we're missing an existing method or mechanism that could help solve the problem. Look for existing utilities first.
+- Avoid falling back to patterns that require `panic!`, `unreachable!`, or `.unwrap()`. Instead, try to encode those constraints in the type system.

Cargo.lock

@@ -146,9 +146,12 @@ dependencies = [
 
 [[package]]
 name = "arc-swap"
-version = "1.7.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69f7f8c3906b62b754cd5326047894316021dcfe5a194c8ea52bdd94934a3457"
+checksum = "51d03449bb8ca2cc2ef70869af31463d1ae5ccc8fa3e334b307203fbf815207e"
+dependencies = [
+ "rustversion",
+]
 
 [[package]]
 name = "argfile"
@@ -1030,7 +1033,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -1122,7 +1125,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1645,9 +1648,9 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "1.45.0"
+version = "1.45.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b76866be74d68b1595eb8060cb9191dca9c021db2316558e52ddc5d55d41b66c"
+checksum = "983e3b24350c84ab8a65151f537d67afbbf7153bb9f1110e03e9fa9b07f67a5c"
 dependencies = [
  "console 0.15.11",
  "once_cell",
@@ -1778,9 +1781,9 @@ checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
 [[package]]
 name = "jiff"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49cce2b81f2098e7e3efc35bc2e0a6b7abec9d34128283d7a26fa8f32a6dbb35"
+checksum = "a87d9b8105c23642f50cbbae03d1f75d8422c5cb98ce7ee9271f7ff7505be6b8"
 dependencies = [
  "jiff-static",
  "jiff-tzdb-platform",
@@ -1788,14 +1791,14 @@ dependencies = [
  "portable-atomic",
  "portable-atomic-util",
  "serde_core",
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "jiff-static"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "980af8b43c3ad5d8d349ace167ec8170839f753a42d233ba19e08afe1850fa69"
+checksum = "b787bebb543f8969132630c51fd0afab173a86c6abae56ff3b9e5e3e3f9f6e58"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2057,9 +2060,9 @@ checksum = "2532096657941c2fea9c289d370a250971c689d4f143798ff67113ec042024a5"
 
 [[package]]
 name = "matchit"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ea5f97102eb9e54ab99fb70bb175589073f554bdadfb74d9bd656482ea73e2a"
+checksum = "b3eede3bdf92f3b4f9dc04072a9ce5ab557d5ec9038773bf9ffcd5588b3cc05b"
 
 [[package]]
 name = "memchr"
@@ -2631,9 +2634,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.103"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ee95bc4ef87b8d5ba32e8b7714ccc834865276eab0aed5c9958d00ec45f49e8"
+checksum = "9695f8df41bb4f3d222c95a67532365f569318332d03d5f3f67f37b20e6ebdf0"
 dependencies = [
  "unicode-ident",
 ]
@@ -2909,7 +2912,7 @@ dependencies = [
 
 [[package]]
 name = "ruff"
-version = "0.14.10"
+version = "0.14.11"
 dependencies = [
  "anyhow",
  "argfile",
@@ -2925,6 +2928,7 @@ dependencies = [
  "filetime",
  "globwalk",
  "ignore",
+ "indexmap",
  "indoc",
  "insta",
  "insta-cmd",
@@ -3168,7 +3172,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_linter"
-version = "0.14.10"
+version = "0.14.11"
 dependencies = [
  "aho-corasick",
  "anyhow",
@@ -3246,7 +3250,6 @@ name = "ruff_memory_usage"
 version = "0.0.0"
 dependencies = [
  "get-size2",
- "ordermap",
 ]
 
 [[package]]
@@ -3527,7 +3530,7 @@ dependencies = [
 
 [[package]]
 name = "ruff_wasm"
-version = "0.14.10"
+version = "0.14.11"
 dependencies = [
  "console_error_panic_hook",
  "console_log",
@@ -3617,15 +3620,15 @@ checksum = "781442f29170c5c93b7185ad559492601acdc71d5bb0706f5868094f45cfcd08"
 
 [[package]]
 name = "rustix"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd15f8a2c5551a84d56efdc1cd049089e409ac19a3072d5037a17fd70719ff3e"
+checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
 dependencies = [
  "bitflags 2.10.0",
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -3643,7 +3646,7 @@ checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 [[package]]
 name = "salsa"
 version = "0.25.2"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=309c249088fdeef0129606fa34ec2eefc74736ff#309c249088fdeef0129606fa34ec2eefc74736ff"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=9860ff6ca0f1f8f3a8d6b832020002790b501254#9860ff6ca0f1f8f3a8d6b832020002790b501254"
 dependencies = [
  "boxcar",
  "compact_str",
@@ -3668,12 +3671,12 @@ dependencies = [
 [[package]]
 name = "salsa-macro-rules"
 version = "0.25.2"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=309c249088fdeef0129606fa34ec2eefc74736ff#309c249088fdeef0129606fa34ec2eefc74736ff"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=9860ff6ca0f1f8f3a8d6b832020002790b501254#9860ff6ca0f1f8f3a8d6b832020002790b501254"
 
 [[package]]
 name = "salsa-macros"
 version = "0.25.2"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=309c249088fdeef0129606fa34ec2eefc74736ff#309c249088fdeef0129606fa34ec2eefc74736ff"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=9860ff6ca0f1f8f3a8d6b832020002790b501254#9860ff6ca0f1f8f3a8d6b832020002790b501254"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3692,9 +3695,9 @@ dependencies = [
 
 [[package]]
 name = "schemars"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9558e172d4e8533736ba97870c4b2cd63f84b382a3d6eb063da41b91cce17289"
+checksum = "54e910108742c57a770f492731f99be216a52fadd361b06c8fb59d74ccc267d2"
 dependencies = [
  "dyn-clone",
  "ref-cast",
@@ -3705,9 +3708,9 @@ dependencies = [
 
 [[package]]
 name = "schemars_derive"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "301858a4023d78debd2353c7426dc486001bddc91ae31a76fb1f55132f7e2633"
+checksum = "4908ad288c5035a8eb12cfdf0d49270def0a268ee162b75eeee0f85d155a7c45"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3781,15 +3784,15 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.146"
+version = "1.0.148"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "217ca874ae0207aac254aa02c957ded05585a90892cc8d87f9e5fa49669dadd8"
+checksum = "3084b546a1dd6289475996f182a22aba973866ea8e8b02c51d9f46b1336a22da"
 dependencies = [
  "itoa",
  "memchr",
- "ryu",
  "serde",
  "serde_core",
+ "zmij",
 ]
 
 [[package]]
@@ -4019,15 +4022,15 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "tempfile"
-version = "3.23.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
+checksum = "655da9c7eb6305c55742045d5a8d2037996d61d8de95806335c7c86ce0f82e9c"
 dependencies = [
  "fastrand",
  "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -4509,11 +4512,13 @@ dependencies = [
  "regex-automata",
  "ruff_cache",
  "ruff_db",
+ "ruff_diagnostics",
  "ruff_macros",
  "ruff_memory_usage",
  "ruff_options_metadata",
  "ruff_python_ast",
  "ruff_python_formatter",
+ "ruff_python_trivia",
  "ruff_text_size",
  "rustc-hash",
  "salsa",
@@ -5131,7 +5136,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -5523,6 +5528,12 @@ dependencies = [
  "zstd",
 ]
 
+[[package]]
+name = "zmij"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30e0d8dffbae3d840f64bda38e28391faef673a7b5a6017840f2a106c8145868"
+
 [[package]]
 name = "zstd"
 version = "0.11.2+zstd.1.5.2"

Cargo.toml

@@ -93,6 +93,7 @@ get-size2 = { version = "0.7.3", features = [
     "smallvec",
     "hashbrown",
     "compact-str",
+    "ordermap"
 ] }
 getrandom = { version = "0.3.1" }
 glob = { version = "0.3.1" }
@@ -149,7 +150,7 @@ regex-automata = { version = "0.4.9" }
 rustc-hash = { version = "2.0.0" }
 rustc-stable-hash = { version = "0.1.2" }
 # When updating salsa, make sure to also update the revision in `fuzz/Cargo.toml`
-salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "309c249088fdeef0129606fa34ec2eefc74736ff", default-features = false, features = [
+salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "9860ff6ca0f1f8f3a8d6b832020002790b501254", default-features = false, features = [
     "compact_str",
     "macros",
     "salsa_unstable",
@@ -334,6 +335,11 @@ strip = false
 debug = "full"
 lto = false
 
+# Profile for faster iteration: applies minimal optimizations for faster tests.
+[profile.fast-test]
+inherits = "dev"
+opt-level = 1
+
 # The profile that 'cargo dist' will build with.
 [profile.dist]
 inherits = "release"

README.md

@@ -150,8 +150,8 @@ 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/0.14.10/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.14.10/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.14.11/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.14.11/install.ps1 | iex"
 ```
 
 You can also install Ruff via [Homebrew](https://formulae.brew.sh/formula/ruff), [Conda](https://anaconda.org/conda-forge/ruff),
@@ -184,7 +184,7 @@ 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: v0.14.10
+  rev: v0.14.11
   hooks:
     # Run the linter.
     - id: ruff-check

crates/ruff/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.14.10"
+version = "0.14.11"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }
@@ -48,6 +48,7 @@ colored = { workspace = true }
 filetime = { workspace = true }
 globwalk = { workspace = true }
 ignore = { workspace = true }
+indexmap = { workspace = true }
 is-macro = { workspace = true }
 itertools = { workspace = true }
 jiff = { workspace = true }

crates/ruff/src/commands/analyze_graph.rs

@@ -2,6 +2,7 @@ use crate::args::{AnalyzeGraphArgs, ConfigArguments};
 use crate::resolve::resolve;
 use crate::{ExitStatus, resolve_default_files};
 use anyhow::Result;
+use indexmap::IndexSet;
 use log::{debug, warn};
 use path_absolutize::CWD;
 use ruff_db::system::{SystemPath, SystemPathBuf};
@@ -11,7 +12,7 @@ use ruff_linter::source_kind::SourceKind;
 use ruff_linter::{warn_user, warn_user_once};
 use ruff_python_ast::{PySourceType, SourceType};
 use ruff_workspace::resolver::{ResolvedFile, match_exclusion, python_files_in_path};
-use rustc_hash::FxHashMap;
+use rustc_hash::{FxBuildHasher, FxHashMap};
 use std::io::Write;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
@@ -59,17 +60,34 @@ pub(crate) fn analyze_graph(
         })
         .collect::<FxHashMap<_, _>>();
 
-    // Create a database from the source roots.
-    let src_roots = package_roots
-        .values()
-        .filter_map(|package| package.as_deref())
-        .filter_map(|package| package.parent())
-        .map(Path::to_path_buf)
-        .filter_map(|path| SystemPathBuf::from_path_buf(path).ok())
-        .collect();
+    // Create a database from the source roots, combining configured `src` paths with detected
+    // package roots. Configured paths are added first so they take precedence, and duplicates
+    // are removed.
+    let mut src_roots: IndexSet<SystemPathBuf, FxBuildHasher> = IndexSet::default();
+
+    // Add configured `src` paths first (for precedence), filtering to only include existing
+    // directories.
+    src_roots.extend(
+        pyproject_config
+            .settings
+            .linter
+            .src
+            .iter()
+            .filter(|path| path.is_dir())
+            .filter_map(|path| SystemPathBuf::from_path_buf(path.clone()).ok()),
+    );
+
+    // Add detected package roots.
+    src_roots.extend(
+        package_roots
+            .values()
+            .filter_map(|package| package.as_deref())
+            .filter_map(|path| path.parent())
+            .filter_map(|path| SystemPathBuf::from_path_buf(path.to_path_buf()).ok()),
+    );
 
     let db = ModuleDb::from_src_roots(
-        src_roots,
+        src_roots.into_iter().collect(),
         pyproject_config
             .settings
             .analyze

crates/ruff/src/commands/format.rs

@@ -1305,7 +1305,7 @@ mod tests {
         settings.add_filter(r"(Panicked at) [^:]+:\d+:\d+", "$1 <location>");
         let _s = settings.bind_to_scope();
 
-        assert_snapshot!(str::from_utf8(&buf)?, @r"
+        assert_snapshot!(str::from_utf8(&buf)?, @"
         io: test.py: Permission denied
         --> test.py:1:1
 

crates/ruff/src/commands/snapshots/ruff__commands__check__test__E902_E902.py.snap

@@ -4,4 +4,3 @@ source: crates/ruff/src/commands/check.rs
 /home/ferris/project/code.py:1:1: E902 Permission denied (os error 13)
 /home/ferris/project/notebook.ipynb:1:1: E902 Permission denied (os error 13)
 /home/ferris/project/pyproject.toml:1:1: E902 Permission denied (os error 13)
-

crates/ruff/src/snapshots/ruff__version__tests__version_formatting.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff/src/version.rs
 expression: version
-snapshot_kind: text
 ---
 0.0.0

crates/ruff/src/snapshots/ruff__version__tests__version_formatting_with_commit_info.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff/src/version.rs
 expression: version
-snapshot_kind: text
 ---
 0.0.0 (53b0f5d92 2023-10-19)

crates/ruff/src/snapshots/ruff__version__tests__version_formatting_with_commits_since_last_tag.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff/src/version.rs
 expression: version
-snapshot_kind: text
 ---
 0.0.0+24 (53b0f5d92 2023-10-19)

crates/ruff/src/snapshots/ruff__version__tests__version_serializable.snap

@@ -1,7 +1,6 @@
 ---
 source: crates/ruff/src/version.rs
 expression: version
-snapshot_kind: text
 ---
 {
   "version": "0.0.0",

crates/ruff/tests/analyze_graph.rs

@@ -132,29 +132,29 @@ fn dependents() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().arg("--direction").arg("dependents").current_dir(&root), @r###"
-            success: true
-            exit_code: 0
-            ----- stdout -----
-            {
-              "ruff/__init__.py": [],
-              "ruff/a.py": [],
-              "ruff/b.py": [
-                "ruff/a.py"
-              ],
-              "ruff/c.py": [
-                "ruff/b.py"
-              ],
-              "ruff/d.py": [
-                "ruff/c.py"
-              ],
-              "ruff/e.py": [
-                "ruff/d.py"
-              ]
-            }
+        assert_cmd_snapshot!(command().arg("--direction").arg("dependents").current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "ruff/__init__.py": [],
+          "ruff/a.py": [],
+          "ruff/b.py": [
+            "ruff/a.py"
+          ],
+          "ruff/c.py": [
+            "ruff/b.py"
+          ],
+          "ruff/d.py": [
+            "ruff/c.py"
+          ],
+          "ruff/e.py": [
+            "ruff/d.py"
+          ]
+        }
 
-            ----- stderr -----
-            "###);
+        ----- stderr -----
+        "#);
     });
 
     Ok(())
@@ -184,21 +184,21 @@ fn string_detection() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
-            success: true
-            exit_code: 0
-            ----- stdout -----
-            {
-              "ruff/__init__.py": [],
-              "ruff/a.py": [
-                "ruff/b.py"
-              ],
-              "ruff/b.py": [],
-              "ruff/c.py": []
-            }
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "ruff/__init__.py": [],
+          "ruff/a.py": [
+            "ruff/b.py"
+          ],
+          "ruff/b.py": [],
+          "ruff/c.py": []
+        }
 
-            ----- stderr -----
-            "###);
+        ----- stderr -----
+        "#);
     });
 
     insta::with_settings!({
@@ -319,7 +319,7 @@ fn globs() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -340,7 +340,7 @@ fn globs() -> Result<()> {
         }
 
         ----- stderr -----
-        "###);
+        "#);
     });
 
     Ok(())
@@ -368,7 +368,7 @@ fn exclude() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -381,7 +381,7 @@ fn exclude() -> Result<()> {
         }
 
         ----- stderr -----
-        "###);
+        "#);
     });
 
     Ok(())
@@ -421,7 +421,7 @@ fn wildcard() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -443,7 +443,7 @@ fn wildcard() -> Result<()> {
         }
 
         ----- stderr -----
-        "###);
+        "#);
     });
 
     Ok(())
@@ -639,7 +639,7 @@ fn venv() -> Result<()> {
     }, {
         assert_cmd_snapshot!(
             command().args(["--python", "none"]).arg("packages/albatross").current_dir(&root),
-            @r"
+            @"
         success: false
         exit_code: 2
         ----- stdout -----
@@ -695,7 +695,7 @@ fn notebook_basic() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -708,7 +708,122 @@ fn notebook_basic() -> Result<()> {
         }
 
         ----- stderr -----
-        "###);
+        "#);
+    });
+
+    Ok(())
+}
+
+/// Test that the `src` configuration option is respected.
+///
+/// This is useful for monorepos where there are multiple source directories that need to be
+/// included in the module resolution search path.
+#[test]
+fn src_option() -> Result<()> {
+    let tempdir = TempDir::new()?;
+    let root = ChildPath::new(tempdir.path());
+
+    // Create a lib directory with a package.
+    root.child("lib")
+        .child("mylib")
+        .child("__init__.py")
+        .write_str("def helper(): pass")?;
+
+    // Create an app directory with a file that imports from mylib.
+    root.child("app").child("__init__.py").write_str("")?;
+    root.child("app")
+        .child("main.py")
+        .write_str("from mylib import helper")?;
+
+    // Without src configured, the import from mylib won't resolve.
+    insta::with_settings!({
+        filters => INSTA_FILTERS.to_vec(),
+    }, {
+        assert_cmd_snapshot!(command().arg("app").current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "app/__init__.py": [],
+          "app/main.py": []
+        }
+
+        ----- stderr -----
+        "#);
+    });
+
+    // With src = ["lib"], the import should resolve.
+    root.child("ruff.toml").write_str(indoc::indoc! {r#"
+        src = ["lib"]
+    "#})?;
+
+    insta::with_settings!({
+        filters => INSTA_FILTERS.to_vec(),
+    }, {
+        assert_cmd_snapshot!(command().arg("app").current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "app/__init__.py": [],
+          "app/main.py": [
+            "lib/mylib/__init__.py"
+          ]
+        }
+
+        ----- stderr -----
+        "#);
+    });
+
+    Ok(())
+}
+
+/// Test that glob patterns in `src` are expanded.
+#[test]
+fn src_glob_expansion() -> Result<()> {
+    let tempdir = TempDir::new()?;
+    let root = ChildPath::new(tempdir.path());
+
+    // Create multiple lib directories with packages.
+    root.child("libs")
+        .child("lib_a")
+        .child("pkg_a")
+        .child("__init__.py")
+        .write_str("def func_a(): pass")?;
+    root.child("libs")
+        .child("lib_b")
+        .child("pkg_b")
+        .child("__init__.py")
+        .write_str("def func_b(): pass")?;
+
+    // Create an app that imports from both packages.
+    root.child("app").child("__init__.py").write_str("")?;
+    root.child("app")
+        .child("main.py")
+        .write_str("from pkg_a import func_a\nfrom pkg_b import func_b")?;
+
+    // Use a glob pattern to include all lib directories.
+    root.child("ruff.toml").write_str(indoc::indoc! {r#"
+        src = ["libs/*"]
+    "#})?;
+
+    insta::with_settings!({
+        filters => INSTA_FILTERS.to_vec(),
+    }, {
+        assert_cmd_snapshot!(command().arg("app").current_dir(&root), @r#"
+        success: true
+        exit_code: 0
+        ----- stdout -----
+        {
+          "app/__init__.py": [],
+          "app/main.py": [
+            "libs/lib_a/pkg_a/__init__.py",
+            "libs/lib_b/pkg_b/__init__.py"
+          ]
+        }
+
+        ----- stderr -----
+        "#);
     });
 
     Ok(())
@@ -765,7 +880,7 @@ fn notebook_with_magic() -> Result<()> {
     insta::with_settings!({
         filters => INSTA_FILTERS.to_vec(),
     }, {
-        assert_cmd_snapshot!(command().current_dir(&root), @r###"
+        assert_cmd_snapshot!(command().current_dir(&root), @r#"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -778,7 +893,7 @@ fn notebook_with_magic() -> Result<()> {
         }
 
         ----- stderr -----
-        "###);
+        "#);
     });
 
     Ok(())

crates/ruff/tests/cli/analyze_graph.rs

@@ -29,7 +29,7 @@ fn type_checking_imports() -> anyhow::Result<()> {
         ("ruff/c.py", ""),
     ])?;
 
-    assert_cmd_snapshot!(test.command(), @r###"
+    assert_cmd_snapshot!(test.command(), @r#"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -46,12 +46,12 @@ fn type_checking_imports() -> anyhow::Result<()> {
     }
 
     ----- stderr -----
-    "###);
+    "#);
 
     assert_cmd_snapshot!(
         test.command()
             .arg("--no-type-checking-imports"),
-        @r###"
+        @r#"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -65,7 +65,7 @@ fn type_checking_imports() -> anyhow::Result<()> {
     }
 
     ----- stderr -----
-    "###
+    "#
     );
 
     Ok(())
@@ -103,7 +103,7 @@ fn type_checking_imports_from_config() -> anyhow::Result<()> {
         ),
     ])?;
 
-    assert_cmd_snapshot!(test.command(), @r###"
+    assert_cmd_snapshot!(test.command(), @r#"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -117,7 +117,7 @@ fn type_checking_imports_from_config() -> anyhow::Result<()> {
     }
 
     ----- stderr -----
-    "###);
+    "#);
 
     test.write_file(
         "ruff.toml",
@@ -127,7 +127,7 @@ fn type_checking_imports_from_config() -> anyhow::Result<()> {
         "#,
     )?;
 
-    assert_cmd_snapshot!(test.command(), @r###"
+    assert_cmd_snapshot!(test.command(), @r#"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -144,7 +144,7 @@ fn type_checking_imports_from_config() -> anyhow::Result<()> {
     }
 
     ----- stderr -----
-    "###
+    "#
     );
 
     Ok(())

crates/ruff/tests/cli/format.rs

@@ -51,7 +51,7 @@ fn default_files() -> Result<()> {
 
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
-        .arg("--check"), @r"
+        .arg("--check"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -71,7 +71,7 @@ fn format_warn_stdin_filename_with_files() -> Result<()> {
     assert_cmd_snapshot!(test.format_command()
         .args(["--isolated", "--stdin-filename", "foo.py"])
         .arg("foo.py")
-        .pass_stdin("foo =     1"), @r"
+        .pass_stdin("foo =     1"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -87,7 +87,7 @@ fn format_warn_stdin_filename_with_files() -> Result<()> {
 fn nonexistent_config_file() -> Result<()> {
     let test = CliTest::new()?;
     assert_cmd_snapshot!(test.format_command()
-        .args(["--config", "foo.toml", "."]), @r"
+        .args(["--config", "foo.toml", "."]), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -111,7 +111,7 @@ fn nonexistent_config_file() -> Result<()> {
 fn config_override_rejected_if_invalid_toml() -> Result<()> {
     let test = CliTest::new()?;
     assert_cmd_snapshot!(test.format_command()
-        .args(["--config", "foo = bar", "."]), @r"
+        .args(["--config", "foo = bar", "."]), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -145,7 +145,7 @@ fn too_many_config_files() -> Result<()> {
         .arg("ruff.toml")
         .arg("--config")
         .arg("ruff2.toml")
-        .arg("."), @r"
+        .arg("."), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -168,7 +168,7 @@ fn config_file_and_isolated() -> Result<()> {
         .arg("--isolated")
         .arg("--config")
         .arg("ruff.toml")
-        .arg("."), @r"
+        .arg("."), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -390,7 +390,7 @@ fn mixed_line_endings() -> Result<()> {
     assert_cmd_snapshot!(test.format_command()
         .arg("--diff")
         .arg("--isolated")
-        .arg("."), @r"
+        .arg("."), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -446,7 +446,7 @@ OTHER = "OTHER"
         // Explicitly pass test.py, should be formatted regardless of it being excluded by format.exclude
         .arg("test.py")
         // Format all other files in the directory, should respect the `exclude` and `format.exclude` options
-        .arg("."), @r"
+        .arg("."), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -469,7 +469,7 @@ fn deduplicate_directory_and_explicit_file() -> Result<()> {
             .arg("--check")
             .arg(".")
             .arg("main.py"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -495,7 +495,7 @@ from module import =
     assert_cmd_snapshot!(test.format_command()
         .arg("--check")
         .arg("--isolated")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -522,7 +522,7 @@ if __name__ == "__main__":
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
         .arg("--check")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -534,7 +534,7 @@ if __name__ == "__main__":
 
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -545,7 +545,7 @@ if __name__ == "__main__":
 
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -614,7 +614,7 @@ fn output_format_notebook() -> Result<()> {
 
     assert_cmd_snapshot!(
         test.format_command().args(["--isolated", "--preview", "--check"]).arg(path),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -672,7 +672,7 @@ if __name__ == "__main__":
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
         .arg("--exit-non-zero-on-format")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -685,7 +685,7 @@ if __name__ == "__main__":
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
         .arg("--exit-non-zero-on-format")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -701,7 +701,7 @@ if __name__ == "__main__":
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
         .arg("--exit-non-zero-on-fix")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -714,7 +714,7 @@ if __name__ == "__main__":
     assert_cmd_snapshot!(test.format_command()
         .arg("--isolated")
         .arg("--exit-non-zero-on-fix")
-        .arg("main.py"), @r"
+        .arg("main.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -771,7 +771,7 @@ OTHER = "OTHER"
         // Explicitly pass test.py, should not be formatted because of --force-exclude
         .arg("test.py")
         // Format all other files in the directory, should respect the `exclude` and `format.exclude` options
-        .arg("."), @r"
+        .arg("."), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -931,7 +931,7 @@ tab-size = 2
             .pass_stdin(r"
 if True:
     pass
-    "), @r"
+    "), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1144,7 +1144,7 @@ def say_hy(name: str):
     assert_cmd_snapshot!(test.format_command()
         .arg("--config")
         .arg("ruff.toml")
-        .arg("test.py"), @r"
+        .arg("test.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1184,7 +1184,7 @@ def say_hy(name: str):
     assert_cmd_snapshot!(test.format_command()
         .arg("--config")
         .arg("ruff.toml")
-        .arg("test.py"), @r"
+        .arg("test.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1216,7 +1216,7 @@ def say_hy(name: str):
     assert_cmd_snapshot!(test.format_command()
         .arg("--config")
         .arg("ruff.toml")
-        .arg("test.py"), @r"
+        .arg("test.py"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1246,7 +1246,7 @@ fn test_diff() -> Result<()> {
 
     assert_cmd_snapshot!(
         test.format_command().args(["--isolated", "--diff"]).args(paths),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1311,7 +1311,7 @@ fn test_diff_no_change() -> Result<()> {
     let paths = [fixtures.join("unformatted.py")];
     assert_cmd_snapshot!(
         test.format_command().args(["--isolated", "--diff"]).args(paths),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1341,7 +1341,7 @@ fn test_diff_stdin_unformatted() -> Result<()> {
         test.format_command()
             .args(["--isolated", "--diff", "-", "--stdin-filename", "unformatted.py"])
             .pass_stdin(unformatted),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1366,7 +1366,7 @@ fn test_diff_stdin_formatted() -> Result<()> {
     let unformatted = fs::read(fixtures.join("formatted.py")).unwrap();
     assert_cmd_snapshot!(
         test.format_command().args(["--isolated", "--diff", "-"]).pass_stdin(unformatted),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1873,7 +1873,7 @@ include = ["*.ipy"]
     assert_cmd_snapshot!(test.format_command()
         .args(["--config", "ruff.toml"])
         .args(["--extension", "ipy:ipynb"])
-        .arg("."), @r"
+        .arg("."), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1938,7 +1938,7 @@ include = ["*.ipy"]
     assert_cmd_snapshot!(test.format_command()
         .args(["--config", "ruff.toml"])
         .args(["--extension", "ipy:ipynb"])
-        .arg("."), @r"
+        .arg("."), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2021,7 +2021,7 @@ def file2(arg1, arg2,):
     assert_cmd_snapshot!(test.format_command()
         .args(["--isolated", "--range=1:8-1:15"])
         .arg("file1.py")
-        .arg("file2.py"),  @r"
+        .arg("file2.py"),  @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2068,7 +2068,7 @@ fn range_start_larger_than_end() -> Result<()> {
 def foo(arg1, arg2,):
     print("Shouldn't format this" )
 
-"#), @r"
+"#), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2168,7 +2168,7 @@ fn range_missing_line() -> Result<()> {
 def foo(arg1, arg2,):
     print("Should format this" )
 
-"#), @r"
+"#), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2192,7 +2192,7 @@ fn zero_line_number() -> Result<()> {
 def foo(arg1, arg2,):
     print("Should format this" )
 
-"#), @r"
+"#), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2217,7 +2217,7 @@ fn column_and_line_zero() -> Result<()> {
 def foo(arg1, arg2,):
     print("Should format this" )
 
-"#), @r"
+"#), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2274,7 +2274,7 @@ fn range_formatting_notebook() -> Result<()> {
  "nbformat": 4,
  "nbformat_minor": 5
 }
-"#), @r"
+"#), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -2355,7 +2355,7 @@ fn cookiecutter_globbing() -> Result<()> {
     ])?;
 
     assert_cmd_snapshot!(test.format_command()
-            .args(["--isolated", "--diff", "."]), @r"
+            .args(["--isolated", "--diff", "."]), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2374,7 +2374,7 @@ fn stable_output_format_warning() -> Result<()> {
         test.format_command()
             .args(["--output-format=full", "-"])
             .pass_stdin(""),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----

crates/ruff/tests/cli/snapshots/cli__lint__flake8_import_convention_unused_aliased_import.snap

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:
@@ -17,7 +17,6 @@ info:
     - "--fix"
     - "-"
   stdin: "1"
-snapshot_kind: text
 ---
 success: false
 exit_code: 2

crates/ruff/tests/cli/snapshots/cli__lint__flake8_import_convention_unused_aliased_import_no_conflict.snap

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

crates/ruff/tests/cli/snapshots/cli__lint__output_format_json-lines.snap

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -12,7 +12,6 @@ info:
     - "--target-version"
     - py39
     - input.py
-snapshot_kind: text
 ---
 success: false
 exit_code: 1

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

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

@@ -1,5 +1,5 @@
 ---
-source: crates/ruff/tests/lint.rs
+source: crates/ruff/tests/cli/lint.rs
 info:
   program: ruff
   args:

crates/ruff/tests/direxist_guard.rs

@@ -18,13 +18,13 @@ fn check_in_deleted_directory_errors() {
     set_current_dir(&temp_path).unwrap();
     drop(temp_dir);
 
-    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME)).arg("check"), @r###"
-            success: false
-            exit_code: 2
-            ----- stdout -----
+    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME)).arg("check"), @"
+    success: false
+    exit_code: 2
+    ----- stdout -----
 
-            ----- stderr -----
-            ruff failed
-              Cause: Working directory does not exist
-            "###);
+    ----- stderr -----
+    ruff failed
+      Cause: Working directory does not exist
+    ");
 }

crates/ruff/tests/integration_test.rs

@@ -97,7 +97,7 @@ impl<'a> RuffCheck<'a> {
 fn stdin_success() {
     let mut cmd = RuffCheck::default().args([]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin(""), @r"
+        .pass_stdin(""), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -111,7 +111,7 @@ fn stdin_success() {
 fn stdin_error() {
     let mut cmd = RuffCheck::default().args([]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -136,7 +136,7 @@ fn stdin_filename() {
         .args(["--stdin-filename", "F401.py"])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -172,7 +172,7 @@ import bar   # unused import
     )?;
 
     assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(["check", "--isolated", "--no-cache", "--select", "F401"]).current_dir(tempdir.path()), @r"
+        .args(["check", "--isolated", "--no-cache", "--select", "F401"]).current_dir(tempdir.path()), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -208,7 +208,7 @@ fn check_warn_stdin_filename_with_files() {
         .filename("foo.py")
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -235,7 +235,7 @@ fn stdin_source_type_py() {
         .args(["--stdin-filename", "TCH.py"])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -261,7 +261,7 @@ fn stdin_source_type_pyi() {
         .args(["--stdin-filename", "TCH.pyi", "--select", "TCH"])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -294,7 +294,7 @@ fn stdin_json() {
 fn stdin_fix_py() {
     let mut cmd = RuffCheck::default().args(["--fix"]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\nimport sys\n\nprint(sys.version)\n"), @r"
+        .pass_stdin("import os\nimport sys\n\nprint(sys.version)\n"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -572,7 +572,7 @@ fn stdin_override_parser_ipynb() {
  },
  "nbformat": 4,
  "nbformat_minor": 5
-}"#), @r"
+}"#), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -610,7 +610,7 @@ fn stdin_override_parser_py() {
         ])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\n"), @r"
+        .pass_stdin("import os\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -633,7 +633,7 @@ fn stdin_override_parser_py() {
 fn stdin_fix_when_not_fixable_should_still_print_contents() {
     let mut cmd = RuffCheck::default().args(["--fix"]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import os\nimport sys\n\nif (1, 2):\n     print(sys.version)\n"), @r###"
+        .pass_stdin("import os\nimport sys\n\nif (1, 2):\n     print(sys.version)\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -654,14 +654,14 @@ fn stdin_fix_when_not_fixable_should_still_print_contents() {
       |
 
     Found 2 errors (1 fixed, 1 remaining).
-    "###);
+    ");
 }
 
 #[test]
 fn stdin_fix_when_no_issues_should_still_print_contents() {
     let mut cmd = RuffCheck::default().args(["--fix"]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("import sys\n\nprint(sys.version)\n"), @r"
+        .pass_stdin("import sys\n\nprint(sys.version)\n"), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -805,7 +805,7 @@ fn stdin_format_jupyter() {
 fn stdin_parse_error() {
     let mut cmd = RuffCheck::default().build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("from foo import\n"), @r"
+        .pass_stdin("from foo import\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -826,7 +826,7 @@ fn stdin_parse_error() {
 fn stdin_multiple_parse_error() {
     let mut cmd = RuffCheck::default().build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("from foo import\nbar =\n"), @r"
+        .pass_stdin("from foo import\nbar =\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -857,7 +857,7 @@ fn parse_error_not_included() {
     // Parse errors are always shown
     let mut cmd = RuffCheck::default().args(["--select=I"]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("foo =\n"), @r"
+        .pass_stdin("foo =\n"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -878,7 +878,7 @@ fn parse_error_not_included() {
 fn full_output_preview() {
     let mut cmd = RuffCheck::default().args(["--preview"]).build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("l = 1"), @r"
+        .pass_stdin("l = 1"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -907,7 +907,7 @@ preview = true
 ",
     )?;
     let mut cmd = RuffCheck::default().config(&pyproject_toml).build();
-    assert_cmd_snapshot!(cmd.pass_stdin("l = 1"), @r"
+    assert_cmd_snapshot!(cmd.pass_stdin("l = 1"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -929,7 +929,7 @@ preview = true
 fn full_output_format() {
     let mut cmd = RuffCheck::default().output_format("full").build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("l = 1"), @r"
+        .pass_stdin("l = 1"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -967,7 +967,7 @@ fn rule_f401_output_text() {
 
 #[test]
 fn rule_invalid_rule_name() {
-    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404"]), @r"
+    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404"]), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -981,7 +981,7 @@ fn rule_invalid_rule_name() {
 
 #[test]
 fn rule_invalid_rule_name_output_json() {
-    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404", "--output-format", "json"]), @r"
+    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404", "--output-format", "json"]), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -995,7 +995,7 @@ fn rule_invalid_rule_name_output_json() {
 
 #[test]
 fn rule_invalid_rule_name_output_text() {
-    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404", "--output-format", "text"]), @r"
+    assert_cmd_snapshot!(ruff_cmd().args(["rule", "RUF404", "--output-format", "text"]), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1016,7 +1016,7 @@ fn show_statistics() {
                          .pass_stdin(r#"
 def mvce(keys, values):
     return {key: value for key, value in zip(keys, values)}
-"#), @r"
+"#), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1037,7 +1037,7 @@ fn show_statistics_unsafe_fixes() {
                          .pass_stdin(r#"
 def mvce(keys, values):
     return {key: value for key, value in zip(keys, values)}
-"#), @r"
+"#), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1152,7 +1152,7 @@ fn show_statistics_partial_fix() {
         .args(["--select", "UP035", "--statistics"])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("from typing import List, AsyncGenerator"), @r"
+        .pass_stdin("from typing import List, AsyncGenerator"), @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1173,7 +1173,7 @@ fn show_statistics_syntax_errors() {
     // ParseError
     assert_cmd_snapshot!(
         cmd.pass_stdin("x ="),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1186,7 +1186,7 @@ fn show_statistics_syntax_errors() {
     // match before 3.10, UnsupportedSyntaxError
     assert_cmd_snapshot!(
         cmd.pass_stdin("match 2:\n  case 1: ..."),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1199,7 +1199,7 @@ fn show_statistics_syntax_errors() {
     // rebound comprehension variable, SemanticSyntaxError
     assert_cmd_snapshot!(
         cmd.pass_stdin("[x := 1 for x in range(0)]"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1216,7 +1216,7 @@ fn preview_enabled_prefix() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF9", "--output-format=concise", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1238,7 +1238,7 @@ fn preview_enabled_all() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "ALL", "--output-format=concise", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1265,7 +1265,7 @@ fn preview_enabled_direct() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF911", "--output-format=concise", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1282,7 +1282,7 @@ fn preview_disabled_direct() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF911", "--output-format=concise"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1299,7 +1299,7 @@ fn preview_disabled_prefix_empty() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF91", "--output-format=concise"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1316,7 +1316,7 @@ fn preview_disabled_does_not_warn_for_empty_ignore_selections() {
     let mut cmd = RuffCheck::default()
         .args(["--ignore", "RUF9", "--output-format=concise"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1332,7 +1332,7 @@ fn preview_disabled_does_not_warn_for_empty_fixable_selections() {
     let mut cmd = RuffCheck::default()
         .args(["--fixable", "RUF9", "--output-format=concise"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1354,7 +1354,7 @@ fn preview_group_selector() {
         ])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin("I=42\n"), @r"
+        .pass_stdin("I=42\n"), @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1379,7 +1379,7 @@ fn preview_enabled_group_ignore() {
             "--output-format=concise",
         ])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1400,7 +1400,7 @@ fn preview_enabled_group_ignore() {
 fn removed_direct() {
     // Selection of a removed rule should fail
     let mut cmd = RuffCheck::default().args(["--select", "RUF931"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1418,7 +1418,7 @@ fn removed_direct_multiple() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF930", "--select", "RUF931"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1436,7 +1436,7 @@ fn removed_indirect() {
     // Selection _including_ a removed rule without matching should not fail
     // nor should the rule be used
     let mut cmd = RuffCheck::default().args(["--select", "RUF93"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1449,7 +1449,7 @@ fn removed_indirect() {
 #[test]
 fn removed_ignore_direct() {
     let mut cmd = RuffCheck::default().args(["--ignore", "UP027"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1466,7 +1466,7 @@ fn removed_ignore_multiple_direct() {
     let mut cmd = RuffCheck::default()
         .args(["--ignore", "UP027", "--ignore", "PLR1706"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1482,7 +1482,7 @@ fn removed_ignore_multiple_direct() {
 #[test]
 fn removed_ignore_remapped_direct() {
     let mut cmd = RuffCheck::default().args(["--ignore", "PGH001"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1498,7 +1498,7 @@ fn removed_ignore_indirect() {
     // `PLR170` includes removed rules but should not select or warn
     // since it is not a "direct" selection
     let mut cmd = RuffCheck::default().args(["--ignore", "PLR170"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1512,7 +1512,7 @@ fn removed_ignore_indirect() {
 fn redirect_direct() {
     // Selection of a redirected rule directly should use the new rule and warn
     let mut cmd = RuffCheck::default().args(["--select", "RUF940"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1531,7 +1531,7 @@ fn redirect_indirect() {
     // Selection _including_ a redirected rule without matching should not fail
     // nor should the rule be used
     let mut cmd = RuffCheck::default().args(["--select", "RUF94"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1546,7 +1546,7 @@ fn redirect_prefix() {
     // Selection using a redirected prefix should switch to all rules in the
     // new prefix
     let mut cmd = RuffCheck::default().args(["--select", "RUF96"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1565,7 +1565,7 @@ fn deprecated_direct() {
     // Selection of a deprecated rule without preview enabled should still work
     // but a warning should be displayed
     let mut cmd = RuffCheck::default().args(["--select", "RUF920"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1586,7 +1586,7 @@ fn deprecated_multiple_direct() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF920", "--select", "RUF921"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1609,7 +1609,7 @@ fn deprecated_indirect() {
     // `RUF92` includes deprecated rules but should not warn
     // since it is not a "direct" selection
     let mut cmd = RuffCheck::default().args(["--select", "RUF92"]).build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1625,7 +1625,7 @@ fn deprecated_direct_preview_enabled() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF920", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1642,7 +1642,7 @@ fn deprecated_indirect_preview_enabled() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF92", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1659,7 +1659,7 @@ fn deprecated_multiple_direct_preview_enabled() {
     let mut cmd = RuffCheck::default()
         .args(["--select", "RUF920", "--select", "RUF921", "--preview"])
         .build();
-    assert_cmd_snapshot!(cmd, @r"
+    assert_cmd_snapshot!(cmd, @"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -1720,7 +1720,7 @@ fn unreadable_dir() -> Result<()> {
         .filename(unreadable_dir.to_str().unwrap())
         .args([])
         .build();
-    assert_cmd_snapshot!(cmd, @r###"
+    assert_cmd_snapshot!(cmd, @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1728,7 +1728,7 @@ fn unreadable_dir() -> Result<()> {
 
     ----- stderr -----
     warning: Encountered error: Permission denied (os error 13)
-    "###);
+    ");
     Ok(())
 }
 
@@ -1758,7 +1758,7 @@ fn check_input_from_argfile() -> Result<()> {
         (file_a_path.display().to_string().as_str(), "/path/to/a.py"),
     ]}, {
         assert_cmd_snapshot!(cmd
-            .pass_stdin(""), @r"
+            .pass_stdin(""), @"
         success: false
         exit_code: 1
         ----- stdout -----
@@ -1787,17 +1787,17 @@ fn missing_argfile_reports_error() {
     insta::with_settings!({filters => vec![
         ("The system cannot find the file specified.", "No such file or directory")
     ]}, {
-        assert_cmd_snapshot!(cmd, @r"
-    success: false
-    exit_code: 2
-    ----- stdout -----
+        assert_cmd_snapshot!(cmd, @"
+        success: false
+        exit_code: 2
+        ----- stdout -----
 
-    ----- stderr -----
-    ruff failed
-      Cause: Failed to read CLI arguments from files
-      Cause: failed to open file `!.txt`
-      Cause: No such file or directory (os error 2)
-    ");
+        ----- stderr -----
+        ruff failed
+          Cause: Failed to read CLI arguments from files
+          Cause: failed to open file `!.txt`
+          Cause: No such file or directory (os error 2)
+        ");
     });
 }
 
@@ -1807,7 +1807,7 @@ fn check_hints_hidden_unsafe_fixes() {
         .args(["--select", "RUF901,RUF902"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1829,7 +1829,7 @@ fn check_hints_hidden_unsafe_fixes_with_no_safe_fixes() {
     let mut cmd = RuffCheck::default().args(["--select", "RUF902"]).build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("x = {'a': 1, 'a': 1}\n"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1849,7 +1849,7 @@ fn check_no_hint_for_hidden_unsafe_fixes_when_disabled() {
         .args(["--select", "RUF901,RUF902", "--no-unsafe-fixes"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1873,7 +1873,7 @@ fn check_no_hint_for_hidden_unsafe_fixes_with_no_safe_fixes_when_disabled() {
         .build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("x = {'a': 1, 'a': 1}\n"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1892,7 +1892,7 @@ fn check_shows_unsafe_fixes_with_opt_in() {
         .args(["--select", "RUF901,RUF902", "--unsafe-fixes"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1915,7 +1915,7 @@ fn fix_applies_safe_fixes_by_default() {
         .args(["--select", "RUF901,RUF902", "--fix"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1936,7 +1936,7 @@ fn fix_applies_unsafe_fixes_with_opt_in() {
         .args(["--select", "RUF901,RUF902", "--fix", "--unsafe-fixes"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -1955,7 +1955,7 @@ fn fix_does_not_apply_display_only_fixes() {
         .build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("def add_to_list(item, some_list=[]): ..."),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1975,7 +1975,7 @@ fn fix_does_not_apply_display_only_fixes_with_unsafe_fixes_enabled() {
         .build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("def add_to_list(item, some_list=[]): ..."),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -1994,7 +1994,7 @@ fn fix_only_unsafe_fixes_available() {
         .args(["--select", "RUF902", "--fix"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2014,7 +2014,7 @@ fn fix_only_flag_applies_safe_fixes_by_default() {
         .args(["--select", "RUF901,RUF902", "--fix-only"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2031,7 +2031,7 @@ fn fix_only_flag_applies_unsafe_fixes_with_opt_in() {
         .args(["--select", "RUF901,RUF902", "--fix-only", "--unsafe-fixes"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2049,7 +2049,7 @@ fn diff_shows_safe_fixes_by_default() {
         .args(["--select", "RUF901,RUF902", "--diff"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2069,7 +2069,7 @@ fn diff_shows_unsafe_fixes_with_opt_in() {
         .args(["--select", "RUF901,RUF902", "--diff", "--unsafe-fixes"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2091,7 +2091,7 @@ fn diff_does_not_show_display_only_fixes_with_unsafe_fixes_enabled() {
         .build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("def add_to_list(item, some_list=[]): ..."),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2106,7 +2106,7 @@ fn diff_only_unsafe_fixes_available() {
         .args(["--select", "RUF902", "--diff"])
         .build();
     assert_cmd_snapshot!(cmd,
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2134,7 +2134,7 @@ extend-unsafe-fixes = ["RUF901"]
         .args(["--select", "RUF901,RUF902"])
         .build();
     assert_cmd_snapshot!(cmd,
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2170,7 +2170,7 @@ extend-safe-fixes = ["RUF902"]
         .args(["--select", "RUF901,RUF902"])
         .build();
     assert_cmd_snapshot!(cmd,
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2208,7 +2208,7 @@ extend-safe-fixes = ["RUF902"]
         .args(["--select", "RUF901,RUF902"])
         .build();
     assert_cmd_snapshot!(cmd,
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2248,7 +2248,7 @@ extend-safe-fixes = ["RUF9"]
         .build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("x = {'a': 1, 'a': 1}\nprint(('foo'))\nprint(str('foo'))\nisinstance(x, (int, str))\n"),
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2307,7 +2307,7 @@ def log(x, base) -> float:
         .args(["--select", "D41"])
         .build();
     assert_cmd_snapshot!(cmd
-        .pass_stdin(stdin), @r"
+        .pass_stdin(stdin), @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2360,7 +2360,7 @@ select = ["RUF017"]
     let mut cmd = RuffCheck::default().config(&ruff_toml).build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("x = [1, 2, 3]\ny = [4, 5, 6]\nsum([x, y], [])"),
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2401,7 +2401,7 @@ unfixable = ["RUF"]
     let mut cmd = RuffCheck::default().config(&ruff_toml).build();
     assert_cmd_snapshot!(cmd
         .pass_stdin("x = [1, 2, 3]\ny = [4, 5, 6]\nsum([x, y], [])"),
-            @r"
+            @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2431,7 +2431,7 @@ fn pyproject_toml_stdin_syntax_error() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2457,7 +2457,7 @@ fn pyproject_toml_stdin_schema_error() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project]\nname = 1"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2484,7 +2484,7 @@ fn pyproject_toml_stdin_no_applicable_rules_selected() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project"),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2503,7 +2503,7 @@ fn pyproject_toml_stdin_no_applicable_rules_selected_2() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project"),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2522,7 +2522,7 @@ fn pyproject_toml_stdin_no_errors() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin(r#"[project]\nname = "ruff"\nversion = "0.0.0""#),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2547,7 +2547,7 @@ fn pyproject_toml_stdin_schema_error_fix() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project]\nname = 1"),
-        @r"
+        @"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2581,7 +2581,7 @@ fn pyproject_toml_stdin_schema_error_fix_only() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project]\nname = 1"),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2607,7 +2607,7 @@ fn pyproject_toml_stdin_schema_error_fix_diff() {
 
     assert_cmd_snapshot!(
         cmd.pass_stdin("[project]\nname = 1"),
-        @r"
+        @"
     success: true
     exit_code: 0
     ----- stdout -----

crates/ruff/tests/resolve_files.rs

@@ -29,7 +29,7 @@ fn check_project_include_defaults() {
         filters => TEST_FILTERS.to_vec()
     }, {
         assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(["check", "--show-files"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @r"
+        .args(["check", "--show-files"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -53,7 +53,7 @@ fn check_project_respects_direct_paths() {
         filters => TEST_FILTERS.to_vec()
     }, {
         assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(["check", "--show-files", "b.py"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @r"
+        .args(["check", "--show-files", "b.py"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -72,7 +72,7 @@ fn check_project_respects_subdirectory_includes() {
         filters => TEST_FILTERS.to_vec()
     }, {
         assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(["check", "--show-files", "subdirectory"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @r"
+        .args(["check", "--show-files", "subdirectory"]).current_dir(Path::new("./resources/test/fixtures/include-test")), @"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -91,7 +91,7 @@ fn check_project_from_project_subdirectory_respects_includes() {
         filters => TEST_FILTERS.to_vec()
     }, {
         assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
-        .args(["check", "--show-files"]).current_dir(Path::new("./resources/test/fixtures/include-test/subdirectory")), @r"
+        .args(["check", "--show-files"]).current_dir(Path::new("./resources/test/fixtures/include-test/subdirectory")), @"
         success: true
         exit_code: 0
         ----- stdout -----

crates/ruff/tests/snapshots/integration_test__stdin_json.snap

@@ -3,11 +3,12 @@ source: crates/ruff/tests/integration_test.rs
 info:
   program: ruff
   args:
-    - "-"
-    - "--isolated"
-    - "--no-cache"
+    - check
     - "--output-format"
     - json
+    - "--no-cache"
+    - "--isolated"
+    - "-"
     - "--stdin-filename"
     - F401.py
   stdin: "import os\n"
@@ -51,4 +52,3 @@ exit_code: 1
   }
 ]
 ----- stderr -----
-

crates/ruff/tests/version.rs

@@ -16,7 +16,7 @@ const VERSION_FILTER: [(&str, &str); 1] = [(
 fn version_basics() {
     insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
         assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME)).arg("version"), @r"
+            Command::new(get_cargo_bin(BIN_NAME)).arg("version"), @"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -42,7 +42,7 @@ fn config_option_allowed_but_ignored() -> Result<()> {
                 .arg("version")
                 .arg("--config")
                 .arg(&ruff_dot_toml)
-                .args(["--config", "lint.isort.extra-standard-library = ['foo', 'bar']"]), @r"
+                .args(["--config", "lint.isort.extra-standard-library = ['foo', 'bar']"]), @"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -60,7 +60,7 @@ fn config_option_ignored_but_validated() {
         assert_cmd_snapshot!(
             Command::new(get_cargo_bin(BIN_NAME))
                 .arg("version")
-                .args(["--config", "foo = bar"]), @r"
+                .args(["--config", "foo = bar"]), @"
         success: false
         exit_code: 2
         ----- stdout -----
@@ -91,7 +91,7 @@ fn config_option_ignored_but_validated() {
 fn isolated_option_allowed() {
     insta::with_settings!({filters => VERSION_FILTER.to_vec()}, {
         assert_cmd_snapshot!(
-            Command::new(get_cargo_bin(BIN_NAME)).arg("version").arg("--isolated"), @r"
+            Command::new(get_cargo_bin(BIN_NAME)).arg("version").arg("--isolated"), @"
         success: true
         exit_code: 0
         ----- stdout -----

crates/ruff_benchmark/benches/ty.rs

@@ -15,7 +15,7 @@ use ruff_db::files::{File, system_path_to_file};
 use ruff_db::source::source_text;
 use ruff_db::system::{InMemorySystem, MemoryFileSystem, SystemPath, SystemPathBuf, TestSystem};
 use ruff_python_ast::PythonVersion;
-use ty_project::metadata::options::{EnvironmentOptions, Options};
+use ty_project::metadata::options::{AnalysisOptions, EnvironmentOptions, Options};
 use ty_project::metadata::value::{RangedValue, RelativePathBuf};
 use ty_project::watch::{ChangeEvent, ChangedKind};
 use ty_project::{CheckMode, Db, ProjectDatabase, ProjectMetadata};
@@ -67,6 +67,7 @@ fn tomllib_path(file: &TestFile) -> SystemPathBuf {
     SystemPathBuf::from("src").join(file.name())
 }
 
+#[expect(clippy::needless_update)]
 fn setup_tomllib_case() -> Case {
     let system = TestSystem::default();
     let fs = system.memory_file_system().clone();
@@ -85,6 +86,10 @@ fn setup_tomllib_case() -> Case {
             python_version: Some(RangedValue::cli(PythonVersion::PY312)),
             ..EnvironmentOptions::default()
         }),
+        analysis: Some(AnalysisOptions {
+            respect_type_ignore_comments: Some(false),
+            ..AnalysisOptions::default()
+        }),
         ..Options::default()
     });
 
@@ -221,7 +226,7 @@ fn setup_micro_case(code: &str) -> Case {
     let file_path = "src/test.py";
     fs.write_file_all(
         SystemPathBuf::from(file_path),
-        ruff_python_trivia::textwrap::dedent(code),
+        &*ruff_python_trivia::textwrap::dedent(code),
     )
     .unwrap();
 
@@ -557,6 +562,60 @@ fn benchmark_many_enum_members(criterion: &mut Criterion) {
     });
 }
 
+fn benchmark_many_enum_members_2(criterion: &mut Criterion) {
+    const NUM_ENUM_MEMBERS: usize = 48;
+
+    setup_rayon();
+
+    let mut code = "\
+from enum import Enum
+from typing_extensions import assert_never
+
+class E(Enum):
+"
+    .to_string();
+
+    for i in 0..NUM_ENUM_MEMBERS {
+        writeln!(&mut code, "    m{i} = {i}").ok();
+    }
+
+    code.push_str(
+        "
+    def method(self):
+        match self:",
+    );
+
+    for i in 0..NUM_ENUM_MEMBERS {
+        write!(
+            &mut code,
+            "
+            case E.m{i}:
+                pass"
+        )
+        .ok();
+    }
+
+    write!(
+        &mut code,
+        "
+            case _:
+                assert_never(self)"
+    )
+    .ok();
+
+    criterion.bench_function("ty_micro[many_enum_members_2]", |b| {
+        b.iter_batched_ref(
+            || setup_micro_case(&code),
+            |case| {
+                let Case { db, .. } = case;
+                let result = db.check();
+                assert_eq!(result.len(), 0);
+            },
+            BatchSize::SmallInput,
+        );
+    });
+}
+
 struct ProjectBenchmark<'a> {
     project: InstalledProject<'a>,
     fs: MemoryFileSystem,
@@ -701,7 +760,7 @@ fn datetype(criterion: &mut Criterion) {
             max_dep_date: "2025-07-04",
             python_version: PythonVersion::PY313,
         },
-        2,
+        4,
     );
 
     bench_project(&benchmark, criterion);
@@ -717,6 +776,7 @@ criterion_group!(
     benchmark_complex_constrained_attributes_2,
     benchmark_complex_constrained_attributes_3,
     benchmark_many_enum_members,
+    benchmark_many_enum_members_2,
 );
 criterion_group!(project, anyio, attrs, hydra, datetype);
 criterion_main!(check_file, micro, project);

crates/ruff_benchmark/benches/ty_walltime.rs

@@ -71,6 +71,8 @@ impl Display for Benchmark<'_> {
     }
 }
 
+#[track_caller]
+#[expect(clippy::cast_precision_loss)]
 fn check_project(db: &ProjectDatabase, project_name: &str, max_diagnostics: usize) {
     let result = db.check();
     let diagnostics = result.len();
@@ -79,6 +81,12 @@ fn check_project(db: &ProjectDatabase, project_name: &str, max_diagnostics: usiz
         diagnostics > 1 && diagnostics <= max_diagnostics,
         "Expected between 1 and {max_diagnostics} diagnostics on project '{project_name}' but got {diagnostics}",
     );
+
+    if (max_diagnostics - diagnostics) as f64 / max_diagnostics as f64 > 0.10 {
+        tracing::warn!(
+            "The expected diagnostics for project `{project_name}` can be reduced: expected {max_diagnostics} but got {diagnostics}"
+        );
+    }
 }
 
 static ALTAIR: Benchmark = Benchmark::new(
@@ -101,7 +109,7 @@ static ALTAIR: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY312,
     },
-    1000,
+    850,
 );
 
 static COLOUR_SCIENCE: Benchmark = Benchmark::new(
@@ -120,7 +128,7 @@ static COLOUR_SCIENCE: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY310,
     },
-    1070,
+    350,
 );
 
 static FREQTRADE: Benchmark = Benchmark::new(
@@ -163,7 +171,7 @@ static PANDAS: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY312,
     },
-    4000,
+    3800,
 );
 
 static PYDANTIC: Benchmark = Benchmark::new(
@@ -181,7 +189,7 @@ static PYDANTIC: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY39,
     },
-    7000,
+    3200,
 );
 
 static SYMPY: Benchmark = Benchmark::new(
@@ -194,7 +202,7 @@ static SYMPY: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY312,
     },
-    13116,
+    13400,
 );
 
 static TANJUN: Benchmark = Benchmark::new(
@@ -207,7 +215,7 @@ static TANJUN: Benchmark = Benchmark::new(
         max_dep_date: "2025-06-17",
         python_version: PythonVersion::PY312,
     },
-    320,
+    110,
 );
 
 static STATIC_FRAME: Benchmark = Benchmark::new(
@@ -223,7 +231,7 @@ static STATIC_FRAME: Benchmark = Benchmark::new(
         max_dep_date: "2025-08-09",
         python_version: PythonVersion::PY311,
     },
-    1100,
+    1657,
 );
 
 #[track_caller]

crates/ruff_db/src/cancellation.rs

@@ -1,3 +1,4 @@
+use std::fmt::Formatter;
 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;
 
@@ -49,3 +50,15 @@ impl CancellationToken {
         self.cancelled.load(std::sync::atomic::Ordering::Relaxed)
     }
 }
+
+/// The operation was canceled by the provided [`CancellationToken`].
+#[derive(Debug)]
+pub struct Canceled;
+
+impl std::error::Error for Canceled {}
+
+impl std::fmt::Display for Canceled {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        f.write_str("operation was canceled")
+    }
+}

crates/ruff_db/src/diagnostic/mod.rs

@@ -98,6 +98,44 @@ impl Diagnostic {
         diag
     }
 
+    /// Adds sub diagnostics that tell the user that this is a bug in ty
+    /// and asks them to open an issue on GitHub.
+    pub fn add_bug_sub_diagnostics(&mut self, url_encoded_title: &str) {
+        self.sub(SubDiagnostic::new(
+            SubDiagnosticSeverity::Info,
+            "This indicates a bug in ty.",
+        ));
+
+        self.sub(SubDiagnostic::new(
+            SubDiagnosticSeverity::Info,
+            format_args!(
+                "If you could open an issue at https://github.com/astral-sh/ty/issues/new?title={url_encoded_title}, we'd be very appreciative!"
+            ),
+        ));
+        self.sub(SubDiagnostic::new(
+            SubDiagnosticSeverity::Info,
+            format!(
+                "Platform: {os} {arch}",
+                os = std::env::consts::OS,
+                arch = std::env::consts::ARCH
+            ),
+        ));
+        if let Some(version) = crate::program_version() {
+            self.sub(SubDiagnostic::new(
+                SubDiagnosticSeverity::Info,
+                format!("Version: {version}"),
+            ));
+        }
+
+        self.sub(SubDiagnostic::new(
+            SubDiagnosticSeverity::Info,
+            format!(
+                "Args: {args:?}",
+                args = std::env::args().collect::<Vec<_>>()
+            ),
+        ));
+    }
+
     /// Add an annotation to this diagnostic.
     ///
     /// Annotations for a diagnostic are optional, but if any are added,
@@ -1019,6 +1057,13 @@ impl DiagnosticId {
         matches!(self, DiagnosticId::Lint(_))
     }
 
+    pub const fn as_lint(&self) -> Option<LintName> {
+        match self {
+            DiagnosticId::Lint(name) => Some(*name),
+            _ => None,
+        }
+    }
+
     /// Returns `true` if this `DiagnosticId` represents a lint with the given name.
     pub fn is_lint_named(&self, name: &str) -> bool {
         matches!(self, DiagnosticId::Lint(self_name) if self_name == name)

crates/ruff_db/src/diagnostic/render.rs

@@ -1284,7 +1284,7 @@ watermelon
         let diag = env.err().primary("animals", "5", "5", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -1308,7 +1308,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         warning[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -1328,7 +1328,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         info[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -1355,7 +1355,7 @@ watermelon
         let diag = builder.build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1374,7 +1374,7 @@ watermelon
         let diag = builder.build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1395,7 +1395,7 @@ watermelon
         let diag = env.err().primary("non-ascii", "5", "5", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> non-ascii:5:1
           |
@@ -1414,7 +1414,7 @@ watermelon
         let diag = env.err().primary("non-ascii", "2:4", "2:8", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> non-ascii:2:2
           |
@@ -1438,7 +1438,7 @@ watermelon
         env.context(1);
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -1455,7 +1455,7 @@ watermelon
         env.context(0);
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -1470,7 +1470,7 @@ watermelon
         env.context(2);
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1487,7 +1487,7 @@ watermelon
         env.context(2);
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:11:1
            |
@@ -1504,7 +1504,7 @@ watermelon
         env.context(200);
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:5:1
            |
@@ -1537,7 +1537,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:1:1
            |
@@ -1581,7 +1581,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1606,7 +1606,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1634,7 +1634,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1662,7 +1662,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:1:1
           |
@@ -1687,7 +1687,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:1:1
            |
@@ -1718,7 +1718,7 @@ watermelon
         // window.
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:1:1
            |
@@ -1756,7 +1756,7 @@ watermelon
         let diag = env.err().primary("spacey-animals", "8", "8", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> spacey-animals:8:1
           |
@@ -1773,7 +1773,7 @@ watermelon
         let diag = env.err().primary("spacey-animals", "12", "12", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> spacey-animals:12:1
            |
@@ -1791,7 +1791,7 @@ watermelon
         let diag = env.err().primary("spacey-animals", "13", "13", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> spacey-animals:13:1
            |
@@ -1831,7 +1831,7 @@ watermelon
         // instead of special casing the snippet assembly.
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> spacey-animals:3:1
           |
@@ -1860,7 +1860,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -1897,7 +1897,7 @@ watermelon
         );
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -1934,7 +1934,7 @@ watermelon
         );
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -1962,7 +1962,7 @@ watermelon
         diag.sub(env.sub_warn().primary("fruits", "3", "3", "").build());
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -1998,7 +1998,7 @@ watermelon
         diag.sub(env.sub_warn().primary("animals", "11", "11", "").build());
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -2037,7 +2037,7 @@ watermelon
         diag.sub(env.sub_warn().primary("fruits", "3", "3", "").build());
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -2085,7 +2085,7 @@ watermelon
         diag.sub(env.sub_warn().secondary("animals", "3", "3", "").build());
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:3:1
           |
@@ -2121,7 +2121,7 @@ watermelon
         let diag = env.err().primary("animals", "5", "6", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2144,7 +2144,7 @@ watermelon
         let diag = env.err().primary("animals", "5", "7:0", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2164,7 +2164,7 @@ watermelon
         let diag = env.err().primary("animals", "5", "7:1", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2184,7 +2184,7 @@ watermelon
         let diag = env.err().primary("animals", "5:3", "8:8", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:5:4
            |
@@ -2206,7 +2206,7 @@ watermelon
         let diag = env.err().secondary("animals", "5:3", "8:8", "").build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:5:4
            |
@@ -2238,7 +2238,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:4:1
           |
@@ -2267,7 +2267,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:4:1
           |
@@ -2298,7 +2298,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2333,7 +2333,7 @@ watermelon
         // better using only ASCII art.
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2361,7 +2361,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2393,7 +2393,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:3
           |
@@ -2415,7 +2415,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:3
           |
@@ -2448,7 +2448,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:8:1
            |
@@ -2488,7 +2488,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> animals:5:1
           |
@@ -2532,7 +2532,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
          --> fruits:1:1
           |
@@ -2567,7 +2567,7 @@ watermelon
             .build();
         insta::assert_snapshot!(
             env.render(&diag),
-            @r"
+            @"
         error[test-diagnostic]: main diagnostic message
           --> animals:11:1
            |

crates/ruff_db/src/diagnostic/render/concise.rs

@@ -137,7 +137,7 @@ mod tests {
     #[test]
     fn output() {
         let (env, diagnostics) = create_diagnostics(DiagnosticFormat::Concise);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         fib.py:1:8: error[unused-import] `os` imported but unused
         fib.py:6:5: error[unused-variable] Local variable `x` is assigned to but never used
         undef.py:1:4: error[undefined-name] Undefined name `a`
@@ -150,7 +150,7 @@ mod tests {
         env.hide_severity(true);
         env.show_fix_status(true);
         env.fix_applicability(Applicability::DisplayOnly);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         fib.py:1:8: F401 [*] `os` imported but unused
         fib.py:6:5: F841 [*] Local variable `x` is assigned to but never used
         undef.py:1:4: F821 Undefined name `a`
@@ -164,7 +164,7 @@ mod tests {
         env.show_fix_status(true);
         env.fix_applicability(Applicability::DisplayOnly);
         env.preview(true);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         fib.py:1:8: F401 [*] `os` imported but unused
         fib.py:6:5: F841 [*] Local variable `x` is assigned to but never used
         undef.py:1:4: F821 Undefined name `a`
@@ -177,7 +177,7 @@ mod tests {
         env.hide_severity(true);
         env.show_fix_status(true);
         env.fix_applicability(Applicability::DisplayOnly);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         syntax_errors.py:1:15: invalid-syntax: Expected one or more symbol names after import
         syntax_errors.py:3:12: invalid-syntax: Expected ')', found newline
         ");
@@ -186,7 +186,7 @@ mod tests {
     #[test]
     fn syntax_errors() {
         let (env, diagnostics) = create_syntax_error_diagnostics(DiagnosticFormat::Concise);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         syntax_errors.py:1:15: error[invalid-syntax] Expected one or more symbol names after import
         syntax_errors.py:3:12: error[invalid-syntax] Expected ')', found newline
         ");
@@ -195,7 +195,7 @@ mod tests {
     #[test]
     fn notebook_output() {
         let (env, diagnostics) = create_notebook_diagnostics(DiagnosticFormat::Concise);
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
+        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @"
         notebook.ipynb:cell 1:2:8: error[unused-import] `os` imported but unused
         notebook.ipynb:cell 2:2:8: error[unused-import] `math` imported but unused
         notebook.ipynb:cell 3:4:5: error[unused-variable] Local variable `x` is assigned to but never used

crates/ruff_db/src/files.rs

@@ -14,6 +14,7 @@ use crate::diagnostic::{Span, UnifiedFile};
 use crate::file_revision::FileRevision;
 use crate::files::file_root::FileRoots;
 use crate::files::private::FileStatus;
+use crate::source::SourceText;
 use crate::system::{SystemPath, SystemPathBuf, SystemVirtualPath, SystemVirtualPathBuf};
 use crate::vendored::{VendoredPath, VendoredPathBuf};
 use crate::{Db, FxDashMap, vendored};
@@ -323,6 +324,17 @@ pub struct File {
     /// the file has been deleted is to change the status to `Deleted`.
     #[default]
     status: FileStatus,
+
+    /// Overrides the result of [`source_text`](crate::source::source_text).
+    ///
+    /// This is useful when running queries after modifying a file's content but
+    /// before the content is written to disk. For example, to verify that the applied fixes
+    /// didn't introduce any new errors.
+    ///
+    /// The override gets automatically removed the next time the file changes.
+    #[default]
+    #[returns(ref)]
+    pub source_text_override: Option<SourceText>,
 }
 
 // The Salsa heap is tracked separately.
@@ -444,20 +456,28 @@ impl File {
             _ => (FileStatus::NotFound, FileRevision::zero(), None),
         };
 
+        let mut clear_override = false;
+
         if file.status(db) != status {
             tracing::debug!("Updating the status of `{}`", file.path(db));
             file.set_status(db).to(status);
+            clear_override = true;
         }
 
         if file.revision(db) != revision {
             tracing::debug!("Updating the revision of `{}`", file.path(db));
             file.set_revision(db).to(revision);
+            clear_override = true;
         }
 
         if file.permissions(db) != permission {
             tracing::debug!("Updating the permissions of `{}`", file.path(db));
             file.set_permissions(db).to(permission);
         }
+
+        if clear_override && file.source_text_override(db).is_some() {
+            file.set_source_text_override(db).to(None);
+        }
     }
 
     /// Returns `true` if the file exists.
@@ -526,7 +546,7 @@ impl VirtualFile {
     }
 
     /// Increments the revision of the underlying [`File`].
-    fn sync(&self, db: &mut dyn Db) {
+    pub fn sync(&self, db: &mut dyn Db) {
         let file = self.0;
         tracing::debug!("Updating the revision of `{}`", file.path(db));
         let current_revision = file.revision(db);

crates/ruff_db/src/lib.rs

@@ -85,6 +85,13 @@ pub fn max_parallelism() -> NonZeroUsize {
         })
 }
 
+// Use a reasonably large stack size to avoid running into stack overflows too easily. The
+// size was chosen in such a way as to still be able to handle large expressions involving
+// binary operators (x + x + … + x) both during the AST walk in semantic index building as
+// well as during type checking. Using this stack size, we can handle handle expressions
+// that are several times larger than the corresponding limits in existing type checkers.
+pub const STACK_SIZE: usize = 16 * 1024 * 1024;
+
 /// Trait for types that can provide Rust documentation.
 ///
 /// Use `derive(RustDoc)` to automatically implement this trait for types that have a static string documentation.

crates/ruff_db/src/source.rs

@@ -1,6 +1,8 @@
+use std::borrow::Cow;
 use std::ops::Deref;
 use std::sync::Arc;
 
+use ruff_diagnostics::SourceMap;
 use ruff_notebook::Notebook;
 use ruff_python_ast::PySourceType;
 use ruff_source_file::LineIndex;
@@ -16,6 +18,10 @@ pub fn source_text(db: &dyn Db, file: File) -> SourceText {
     let _span = tracing::trace_span!("source_text", file = %path).entered();
     let mut read_error = None;
 
+    if let Some(source) = file.source_text_override(db) {
+        return source.clone();
+    }
+
     let kind = if is_notebook(db.system(), path) {
         file.read_to_notebook(db)
             .unwrap_or_else(|error| {
@@ -90,6 +96,45 @@ impl SourceText {
     pub fn read_error(&self) -> Option<&SourceTextError> {
         self.inner.read_error.as_ref()
     }
+
+    /// Returns a new instance for this file with the updated source text (Python code).
+    ///
+    /// Uses the `source_map` to preserve the cell-boundaries.
+    #[must_use]
+    pub fn with_text(&self, new_text: String, source_map: &SourceMap) -> Self {
+        let new_kind = match &self.inner.kind {
+            SourceTextKind::Text(_) => SourceTextKind::Text(new_text),
+
+            SourceTextKind::Notebook { notebook } => {
+                let mut new_notebook = notebook.as_ref().clone();
+                new_notebook.update(source_map, new_text);
+                SourceTextKind::Notebook {
+                    notebook: new_notebook.into(),
+                }
+            }
+        };
+
+        Self {
+            inner: Arc::new(SourceTextInner {
+                kind: new_kind,
+                read_error: self.inner.read_error.clone(),
+            }),
+        }
+    }
+
+    pub fn to_bytes(&self) -> Cow<'_, [u8]> {
+        match &self.inner.kind {
+            SourceTextKind::Text(source) => Cow::Borrowed(source.as_bytes()),
+            SourceTextKind::Notebook { notebook } => {
+                let mut output: Vec<u8> = Vec::new();
+                notebook
+                    .write(&mut output)
+                    .expect("writing to a Vec should never fail");
+
+                Cow::Owned(output)
+            }
+        }
+    }
 }
 
 impl Deref for SourceText {
@@ -117,13 +162,13 @@ impl std::fmt::Debug for SourceText {
     }
 }
 
-#[derive(Eq, PartialEq, get_size2::GetSize)]
+#[derive(Eq, PartialEq, get_size2::GetSize, Clone)]
 struct SourceTextInner {
     kind: SourceTextKind,
     read_error: Option<SourceTextError>,
 }
 
-#[derive(Eq, PartialEq, get_size2::GetSize)]
+#[derive(Eq, PartialEq, get_size2::GetSize, Clone)]
 enum SourceTextKind {
     Text(String),
     Notebook {

crates/ruff_db/src/system.rs

@@ -271,7 +271,12 @@ pub trait WritableSystem: System {
     fn create_new_file(&self, path: &SystemPath) -> Result<()>;
 
     /// Writes the given content to the file at the given path.
-    fn write_file(&self, path: &SystemPath, content: &str) -> Result<()>;
+    fn write_file(&self, path: &SystemPath, content: &str) -> Result<()> {
+        self.write_file_bytes(path, content.as_bytes())
+    }
+
+    /// Writes the given content to the file at the given path.
+    fn write_file_bytes(&self, path: &SystemPath, content: &[u8]) -> Result<()>;
 
     /// Creates a directory at `path` as well as any intermediate directories.
     fn create_directory_all(&self, path: &SystemPath) -> Result<()>;
@@ -311,6 +316,8 @@ pub trait WritableSystem: System {
 
         Ok(Some(cache_path))
     }
+
+    fn dyn_clone(&self) -> Box<dyn WritableSystem>;
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]

crates/ruff_db/src/system/memory_fs.rs

@@ -122,7 +122,9 @@ impl MemoryFileSystem {
             let entry = by_path.get(&normalized).ok_or_else(not_found)?;
 
             match entry {
-                Entry::File(file) => Ok(file.content.clone()),
+                Entry::File(file) => {
+                    String::from_utf8(file.content.to_vec()).map_err(|_| invalid_utf8())
+                }
                 Entry::Directory(_) => Err(is_a_directory()),
             }
         }
@@ -139,7 +141,7 @@ impl MemoryFileSystem {
             .get(&path.as_ref().to_path_buf())
             .ok_or_else(not_found)?;
 
-        Ok(file.content.clone())
+        String::from_utf8(file.content.to_vec()).map_err(|_| invalid_utf8())
     }
 
     pub fn exists(&self, path: &SystemPath) -> bool {
@@ -161,7 +163,7 @@ impl MemoryFileSystem {
         match by_path.entry(normalized) {
             btree_map::Entry::Vacant(entry) => {
                 entry.insert(Entry::File(File {
-                    content: String::new(),
+                    content: Box::default(),
                     last_modified: file_time_now(),
                 }));
 
@@ -177,13 +179,17 @@ impl MemoryFileSystem {
     /// Stores a new file in the file system.
     ///
     /// The operation overrides the content for an existing file with the same normalized `path`.
-    pub fn write_file(&self, path: impl AsRef<SystemPath>, content: impl ToString) -> Result<()> {
+    pub fn write_file(
+        &self,
+        path: impl AsRef<SystemPath>,
+        content: impl AsRef<[u8]>,
+    ) -> Result<()> {
         let mut by_path = self.inner.by_path.write().unwrap();
 
         let normalized = self.normalize_path(path.as_ref());
 
         let file = get_or_create_file(&mut by_path, &normalized)?;
-        file.content = content.to_string();
+        file.content = content.as_ref().to_vec().into_boxed_slice();
         file.last_modified = file_time_now();
 
         Ok(())
@@ -214,7 +220,7 @@ impl MemoryFileSystem {
     pub fn write_file_all(
         &self,
         path: impl AsRef<SystemPath>,
-        content: impl ToString,
+        content: impl AsRef<[u8]>,
     ) -> Result<()> {
         let path = path.as_ref();
 
@@ -228,19 +234,24 @@ impl MemoryFileSystem {
     /// Stores a new virtual file in the file system.
     ///
     /// The operation overrides the content for an existing virtual file with the same `path`.
-    pub fn write_virtual_file(&self, path: impl AsRef<SystemVirtualPath>, content: impl ToString) {
+    pub fn write_virtual_file(
+        &self,
+        path: impl AsRef<SystemVirtualPath>,
+        content: impl AsRef<[u8]>,
+    ) {
         let path = path.as_ref();
         let mut virtual_files = self.inner.virtual_files.write().unwrap();
+        let content = content.as_ref().to_vec().into_boxed_slice();
 
         match virtual_files.entry(path.to_path_buf()) {
             std::collections::hash_map::Entry::Vacant(entry) => {
                 entry.insert(File {
-                    content: content.to_string(),
+                    content,
                     last_modified: file_time_now(),
                 });
             }
             std::collections::hash_map::Entry::Occupied(mut entry) => {
-                entry.get_mut().content = content.to_string();
+                entry.get_mut().content = content;
             }
         }
     }
@@ -468,7 +479,7 @@ impl Entry {
 
 #[derive(Debug)]
 struct File {
-    content: String,
+    content: Box<[u8]>,
     last_modified: FileTime,
 }
 
@@ -497,6 +508,13 @@ fn directory_not_empty() -> std::io::Error {
     std::io::Error::other("directory not empty")
 }
 
+fn invalid_utf8() -> std::io::Error {
+    std::io::Error::new(
+        std::io::ErrorKind::InvalidData,
+        "stream did not contain valid UTF-8",
+    )
+}
+
 fn create_dir_all(
     paths: &mut RwLockWriteGuard<BTreeMap<Utf8PathBuf, Entry>>,
     normalized: &Utf8Path,
@@ -533,7 +551,7 @@ fn get_or_create_file<'a>(
 
     let entry = paths.entry(normalized.to_path_buf()).or_insert_with(|| {
         Entry::File(File {
-            content: String::new(),
+            content: Box::default(),
             last_modified: file_time_now(),
         })
     });
@@ -844,7 +862,7 @@ mod tests {
         let fs = with_files(["c.py"]);
 
         let error = fs
-            .write_file(SystemPath::new("a/b.py"), "content".to_string())
+            .write_file(SystemPath::new("a/b.py"), "content")
             .unwrap_err();
 
         assert_eq!(error.kind(), ErrorKind::NotFound);
@@ -855,7 +873,7 @@ mod tests {
         let fs = with_files(["a/b.py"]);
 
         let error = fs
-            .write_file_all(SystemPath::new("a/b.py/c"), "content".to_string())
+            .write_file_all(SystemPath::new("a/b.py/c"), "content")
             .unwrap_err();
 
         assert_eq!(error.kind(), ErrorKind::Other);
@@ -878,7 +896,7 @@ mod tests {
         let fs = MemoryFileSystem::new();
         let path = SystemPath::new("a.py");
 
-        fs.write_file_all(path, "Test content".to_string())?;
+        fs.write_file_all(path, "Test content")?;
 
         assert_eq!(fs.read_to_string(path)?, "Test content");
 
@@ -915,9 +933,7 @@ mod tests {
 
         fs.create_directory_all("a")?;
 
-        let error = fs
-            .write_file(SystemPath::new("a"), "content".to_string())
-            .unwrap_err();
+        let error = fs.write_file(SystemPath::new("a"), "content").unwrap_err();
 
         assert_eq!(error.kind(), ErrorKind::Other);
 

crates/ruff_db/src/system/os.rs

@@ -361,13 +361,17 @@ impl WritableSystem for OsSystem {
         std::fs::File::create_new(path).map(drop)
     }
 
-    fn write_file(&self, path: &SystemPath, content: &str) -> Result<()> {
+    fn write_file_bytes(&self, path: &SystemPath, content: &[u8]) -> Result<()> {
         std::fs::write(path.as_std_path(), content)
     }
 
     fn create_directory_all(&self, path: &SystemPath) -> Result<()> {
         std::fs::create_dir_all(path.as_std_path())
     }
+
+    fn dyn_clone(&self) -> Box<dyn WritableSystem> {
+        Box::new(self.clone())
+    }
 }
 
 impl Default for OsSystem {

crates/ruff_db/src/system/test.rs

@@ -205,13 +205,17 @@ impl WritableSystem for TestSystem {
         self.system().create_new_file(path)
     }
 
-    fn write_file(&self, path: &SystemPath, content: &str) -> Result<()> {
-        self.system().write_file(path, content)
+    fn write_file_bytes(&self, path: &SystemPath, content: &[u8]) -> Result<()> {
+        self.system().write_file_bytes(path, content)
     }
 
     fn create_directory_all(&self, path: &SystemPath) -> Result<()> {
         self.system().create_directory_all(path)
     }
+
+    fn dyn_clone(&self) -> Box<dyn WritableSystem> {
+        Box::new(self.clone())
+    }
 }
 
 /// Extension trait for databases that use a [`WritableSystem`].
@@ -283,7 +287,11 @@ pub trait DbWithTestSystem: Db + Sized {
     ///
     /// ## Panics
     /// If the db isn't using the [`InMemorySystem`].
-    fn write_virtual_file(&mut self, path: impl AsRef<SystemVirtualPath>, content: impl ToString) {
+    fn write_virtual_file(
+        &mut self,
+        path: impl AsRef<SystemVirtualPath>,
+        content: impl AsRef<[u8]>,
+    ) {
         let path = path.as_ref();
         self.test_system()
             .memory_file_system()
@@ -322,23 +330,23 @@ where
     }
 }
 
-#[derive(Default, Debug)]
+#[derive(Clone, Default, Debug)]
 pub struct InMemorySystem {
-    user_config_directory: Mutex<Option<SystemPathBuf>>,
+    user_config_directory: Arc<Mutex<Option<SystemPathBuf>>>,
     memory_fs: MemoryFileSystem,
 }
 
 impl InMemorySystem {
     pub fn new(cwd: SystemPathBuf) -> Self {
         Self {
-            user_config_directory: Mutex::new(None),
+            user_config_directory: Mutex::new(None).into(),
             memory_fs: MemoryFileSystem::with_current_directory(cwd),
         }
     }
 
     pub fn from_memory_fs(memory_fs: MemoryFileSystem) -> Self {
         Self {
-            user_config_directory: Mutex::new(None),
+            user_config_directory: Mutex::new(None).into(),
             memory_fs,
         }
     }
@@ -440,10 +448,7 @@ impl System for InMemorySystem {
     }
 
     fn dyn_clone(&self) -> Box<dyn System> {
-        Box::new(Self {
-            user_config_directory: Mutex::new(self.user_config_directory.lock().unwrap().clone()),
-            memory_fs: self.memory_fs.clone(),
-        })
+        Box::new(self.clone())
     }
 }
 
@@ -452,11 +457,15 @@ impl WritableSystem for InMemorySystem {
         self.memory_fs.create_new_file(path)
     }
 
-    fn write_file(&self, path: &SystemPath, content: &str) -> Result<()> {
+    fn write_file_bytes(&self, path: &SystemPath, content: &[u8]) -> Result<()> {
         self.memory_fs.write_file(path, content)
     }
 
     fn create_directory_all(&self, path: &SystemPath) -> Result<()> {
         self.memory_fs.create_directory_all(path)
     }
+
+    fn dyn_clone(&self) -> Box<dyn WritableSystem> {
+        Box::new(self.clone())
+    }
 }

crates/ruff_db/src/vendored.rs

@@ -619,19 +619,19 @@ pub(crate) mod tests {
     fn read_directory_stdlib() {
         let mock_typeshed = mock_typeshed();
 
-        assert_snapshot!(readdir_snapshot(&mock_typeshed, "stdlib"), @r"
+        assert_snapshot!(readdir_snapshot(&mock_typeshed, "stdlib"), @"
         vendored://stdlib/asyncio/
         vendored://stdlib/functools.pyi
         ");
-        assert_snapshot!(readdir_snapshot(&mock_typeshed, "stdlib/"), @r"
+        assert_snapshot!(readdir_snapshot(&mock_typeshed, "stdlib/"), @"
         vendored://stdlib/asyncio/
         vendored://stdlib/functools.pyi
         ");
-        assert_snapshot!(readdir_snapshot(&mock_typeshed, "./stdlib"), @r"
+        assert_snapshot!(readdir_snapshot(&mock_typeshed, "./stdlib"), @"
         vendored://stdlib/asyncio/
         vendored://stdlib/functools.pyi
         ");
-        assert_snapshot!(readdir_snapshot(&mock_typeshed, "./stdlib/"), @r"
+        assert_snapshot!(readdir_snapshot(&mock_typeshed, "./stdlib/"), @"
         vendored://stdlib/asyncio/
         vendored://stdlib/functools.pyi
         ");

crates/ruff_linter/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.14.10"
+version = "0.14.11"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }

crates/ruff_linter/src/comments/snapshots/ruff_linter__comments__shebang__tests__shebang_end_of_line.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff_linter/src/comments/shebang.rs
 expression: "ShebangDirective::try_extract(source)"
-snapshot_kind: text
 ---
 None

crates/ruff_linter/src/comments/snapshots/ruff_linter__comments__shebang__tests__shebang_leading_space.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff_linter/src/comments/shebang.rs
 expression: "ShebangDirective::try_extract(source)"
-snapshot_kind: text
 ---
 None

crates/ruff_linter/src/comments/snapshots/ruff_linter__comments__shebang__tests__shebang_match.snap

@@ -1,7 +1,6 @@
 ---
 source: crates/ruff_linter/src/comments/shebang.rs
 expression: "ShebangDirective::try_extract(source)"
-snapshot_kind: text
 ---
 Some(
     ShebangDirective(

crates/ruff_linter/src/comments/snapshots/ruff_linter__comments__shebang__tests__shebang_match_trailing_comment.snap

@@ -1,7 +1,6 @@
 ---
 source: crates/ruff_linter/src/comments/shebang.rs
 expression: "ShebangDirective::try_extract(source)"
-snapshot_kind: text
 ---
 Some(
     ShebangDirective(

crates/ruff_linter/src/comments/snapshots/ruff_linter__comments__shebang__tests__shebang_non_match.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/ruff_linter/src/comments/shebang.rs
 expression: "ShebangDirective::try_extract(source)"
-snapshot_kind: text
 ---
 None

crates/ruff_linter/src/linter.rs

@@ -26,6 +26,7 @@ use crate::doc_lines::{doc_lines_from_ast, doc_lines_from_tokens};
 use crate::fix::{FixResult, fix_file};
 use crate::noqa::add_noqa;
 use crate::package::PackageRoot;
+use crate::preview::is_py315_support_enabled;
 use crate::registry::Rule;
 #[cfg(any(feature = "test-rules", test))]
 use crate::rules::ruff::rules::test_rules::{self, TEST_RULES, TestRule};
@@ -33,7 +34,7 @@ use crate::settings::types::UnsafeFixes;
 use crate::settings::{LinterSettings, TargetVersion, flags};
 use crate::source_kind::SourceKind;
 use crate::suppression::Suppressions;
-use crate::{Locator, directives, fs};
+use crate::{Locator, directives, fs, warn_user_once};
 
 pub(crate) mod float;
 
@@ -450,6 +451,14 @@ pub fn lint_only(
 ) -> LinterResult {
     let target_version = settings.resolve_target_version(path);
 
+    if matches!(target_version.linter_version(), PythonVersion::PY315)
+        && !is_py315_support_enabled(settings)
+    {
+        warn_user_once!(
+            "Support for Python 3.15 is under development and may be unstable. 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).
@@ -555,6 +564,14 @@ pub fn lint_fix<'a>(
 
     let target_version = settings.resolve_target_version(path);
 
+    if matches!(target_version.linter_version(), PythonVersion::PY315)
+        && !is_py315_support_enabled(settings)
+    {
+        warn_user_once!(
+            "Support for Python 3.15 is under development and may be unstable. Enable `preview` to remove this warning."
+        );
+    }
+
     // Continuously fix until the source code stabilizes.
     loop {
         // Parse once.

crates/ruff_linter/src/message/snapshots/ruff_linter__message__grouped__tests__default.snap

@@ -1,7 +1,6 @@
 ---
 source: crates/ruff_linter/src/message/grouped.rs
 expression: content
-snapshot_kind: text
 ---
 fib.py:
   1:8 F401 `os` imported but unused

crates/ruff_linter/src/noqa.rs

@@ -1326,7 +1326,7 @@ mod tests {
     fn noqa_all() {
         let source = "# noqa";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1347,7 +1347,7 @@ mod tests {
     fn noqa_no_code() {
         let source = "# noqa:";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -1359,7 +1359,7 @@ mod tests {
     fn noqa_no_code_invalid_suffix() {
         let source = "# noqa: foo";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -1371,7 +1371,7 @@ mod tests {
     fn noqa_no_code_trailing_content() {
         let source = "# noqa:  # Foo";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -1383,7 +1383,7 @@ mod tests {
     fn malformed_code_1() {
         let source = "# noqa: F";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -1422,7 +1422,7 @@ mod tests {
     fn malformed_code_3() {
         let source = "# noqa: RUF001F";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             InvalidCodeSuffix,
         )
@@ -1492,7 +1492,7 @@ mod tests {
     fn noqa_all_case_insensitive() {
         let source = "# NOQA";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1625,7 +1625,7 @@ mod tests {
     fn noqa_all_no_space() {
         let source = "#noqa";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1704,7 +1704,7 @@ mod tests {
     fn noqa_all_multi_space() {
         let source = "#  noqa";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1837,7 +1837,7 @@ mod tests {
     fn noqa_all_leading_comment() {
         let source = "# Some comment describing the noqa # noqa";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1916,7 +1916,7 @@ mod tests {
     fn noqa_all_trailing_comment() {
         let source = "# noqa # Some comment describing the noqa";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -1995,7 +1995,7 @@ mod tests {
     fn noqa_invalid_codes() {
         let source = "# noqa: unused-import, F401, some other code";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -2139,7 +2139,7 @@ mod tests {
     fn noqa_code_invalid_code_suffix() {
         let source = "# noqa: F401abc";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             InvalidCodeSuffix,
         )
@@ -2151,7 +2151,7 @@ mod tests {
     fn noqa_invalid_suffix() {
         let source = "# noqa[F401]";
         let directive = lex_inline_noqa(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             InvalidSuffix,
         )
@@ -2163,7 +2163,7 @@ mod tests {
     fn flake8_exemption_all() {
         let source = "# flake8: noqa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2184,7 +2184,7 @@ mod tests {
     fn flake8_noqa_no_code() {
         let source = "# flake8: noqa:";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2196,7 +2196,7 @@ mod tests {
     fn flake8_noqa_no_code_invalid_suffix() {
         let source = "# flake8: noqa: foo";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2208,7 +2208,7 @@ mod tests {
     fn flake8_noqa_no_code_trailing_content() {
         let source = "# flake8: noqa:  # Foo";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2220,7 +2220,7 @@ mod tests {
     fn flake8_malformed_code_1() {
         let source = "# flake8: noqa: F";
         let directive = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -2259,7 +2259,7 @@ mod tests {
     fn flake8_malformed_code_3() {
         let source = "# flake8: noqa: RUF001F";
         let directive = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             InvalidCodeSuffix,
         )
@@ -2271,7 +2271,7 @@ mod tests {
     fn ruff_exemption_all() {
         let source = "# ruff: noqa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2292,7 +2292,7 @@ mod tests {
     fn ruff_noqa_no_code() {
         let source = "# ruff: noqa:";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2304,7 +2304,7 @@ mod tests {
     fn ruff_noqa_no_code_invalid_suffix() {
         let source = "# ruff: noqa: foo";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2316,7 +2316,7 @@ mod tests {
     fn ruff_noqa_no_code_trailing_content() {
         let source = "# ruff: noqa:  # Foo";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             MissingCodes,
         )
@@ -2328,7 +2328,7 @@ mod tests {
     fn ruff_malformed_code_1() {
         let source = "# ruff: noqa: F";
         let directive = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             MissingCodes,
         )
@@ -2367,7 +2367,7 @@ mod tests {
     fn ruff_malformed_code_3() {
         let source = "# ruff: noqa: RUF001F";
         let directive = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(directive, @r"
+        assert_debug_snapshot!(directive, @"
         Err(
             InvalidCodeSuffix,
         )
@@ -2379,7 +2379,7 @@ mod tests {
     fn flake8_exemption_all_no_space() {
         let source = "#flake8:noqa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2400,7 +2400,7 @@ mod tests {
     fn ruff_exemption_all_no_space() {
         let source = "#ruff:noqa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2619,7 +2619,7 @@ mod tests {
     fn ruff_exemption_invalid_code_suffix() {
         let source = "# ruff: noqa: F401abc";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Err(
             InvalidCodeSuffix,
         )
@@ -2685,7 +2685,7 @@ mod tests {
     fn ruff_exemption_all_leading_comment() {
         let source = "# Leading comment # ruff: noqa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2706,7 +2706,7 @@ mod tests {
     fn ruff_exemption_all_trailing_comment() {
         let source = "# ruff: noqa # Trailing comment";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2754,7 +2754,7 @@ mod tests {
     fn ruff_exemption_all_trailing_comment_no_space() {
         let source = "# ruff: noqa# Trailing comment";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2775,7 +2775,7 @@ mod tests {
     fn ruff_exemption_all_trailing_comment_no_hash() {
         let source = "# ruff: noqa Trailing comment";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2823,7 +2823,7 @@ mod tests {
     fn flake8_exemption_all_case_insensitive() {
         let source = "# flake8: NoQa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {
@@ -2844,7 +2844,7 @@ mod tests {
     fn ruff_exemption_all_case_insensitive() {
         let source = "# ruff: NoQa";
         let exemption = lex_file_exemption(TextRange::up_to(source.text_len()), source);
-        assert_debug_snapshot!(exemption, @r"
+        assert_debug_snapshot!(exemption, @"
         Ok(
             Some(
                 NoqaLexerOutput {

crates/ruff_linter/src/preview.rs

@@ -296,3 +296,8 @@ pub(crate) const fn is_s310_resolve_string_literal_bindings_enabled(
 pub(crate) const fn is_range_suppressions_enabled(settings: &LinterSettings) -> bool {
     settings.preview.is_enabled()
 }
+
+// https://github.com/astral-sh/ruff/pull/22419
+pub(crate) const fn is_py315_support_enabled(settings: &LinterSettings) -> bool {
+    settings.preview.is_enabled()
+}

crates/ruff_linter/src/rules/flake8_annotations/snapshots/ruff_linter__rules__flake8_annotations__tests__allow_nested_overload.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_annotations/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_annotations/snapshots/ruff_linter__rules__flake8_annotations__tests__suppress_dummy_args.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_annotations/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_async/snapshots/ruff_linter__rules__flake8_async__tests__ASYNC109_1.py.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_async/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S401_S401.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S402_S402.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S403_S403.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S404_S404.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S405_S405.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S406_S406.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S407_S407.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S408_S408.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S409_S409.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S410_S410.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S411_S411.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S412_S412.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S413_S413.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bandit/snapshots/ruff_linter__rules__flake8_bandit__tests__S415_S415.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bandit/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B006_B006_1.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B027_B027.pyi.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules___abc____init__.py.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_builtins/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules___abc____init__.py_builtins_allowed_modules.snap

@@ -1,5 +1,4 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_builtins/mod.rs
-snapshot_kind: text
 ---
 

crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules__logging____init__.py_builtins_allowed_modules.snap

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crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules__non_builtin____init__.py.snap

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crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules__non_builtin____init__.py_builtins_allowed_modules.snap

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crates/ruff_linter/src/rules/flake8_builtins/snapshots/ruff_linter__rules__flake8_builtins__tests__A005_A005__modules__package__xml.py_builtins_allowed_modules.snap

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crates/ruff_linter/src/rules/flake8_comprehensions/snapshots/ruff_linter__rules__flake8_comprehensions__tests__C419_C419_2.py.snap

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crates/ruff_linter/src/rules/flake8_copyright/snapshots/ruff_linter__rules__flake8_copyright__tests__notice.snap

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crates/ruff_linter/src/rules/flake8_copyright/snapshots/ruff_linter__rules__flake8_copyright__tests__notice_with_c.snap

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crates/ruff_linter/src/rules/flake8_copyright/snapshots/ruff_linter__rules__flake8_copyright__tests__notice_with_caps.snap

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crates/ruff_linter/src/rules/flake8_copyright/snapshots/ruff_linter__rules__flake8_copyright__tests__notice_with_comma.snap

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crates/ruff_linter/src/rules/flake8_copyright/snapshots/ruff_linter__rules__flake8_copyright__tests__notice_with_range.snap

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