don't do nested bindings inference if we have a declared type

stop tracking implicit (read-only) free variables
addressing some of Micha's comments
2025-08-08 15:54:56 -07:00 · 2025-08-08 13:22:01 -07:00 · 2025-08-08 09:05:50 -07:00 · 2025-08-07 20:39:10 -07:00
3023 changed files with 151662 additions and 178997 deletions
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -49,7 +49,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build sdist"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          command: sdist
          args: --out dist
@@ -79,7 +79,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels - x86_64"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: x86_64
          args: --release --locked --out dist
@@ -121,7 +121,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels - aarch64"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: aarch64
          args: --release --locked --out dist
@@ -177,7 +177,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: ${{ matrix.platform.target }}
          args: --release --locked --out dist
@@ -230,7 +230,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: ${{ matrix.target }}
          manylinux: auto
@@ -292,8 +292,6 @@ jobs:
            maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
          - target: arm-unknown-linux-musleabihf
            arch: arm
-          - target: riscv64gc-unknown-linux-gnu
-            arch: riscv64

    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -306,7 +304,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: ${{ matrix.platform.target }}
          manylinux: auto
@@ -321,7 +319,7 @@ jobs:
          githubToken: ${{ github.token }}
          install: |
            apt-get update
-            apt-get install -y --no-install-recommends python3 python3-pip libatomic1
+            apt-get install -y --no-install-recommends python3 python3-pip
            pip3 install -U pip
          run: |
            pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
@@ -372,7 +370,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: ${{ matrix.target }}
          manylinux: musllinux_1_2
@@ -437,7 +435,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          target: ${{ matrix.platform.target }}
          manylinux: musllinux_1_2
--- a/.github/workflows/build-docker.yml
+++ b/.github/workflows/build-docker.yml
@@ -40,7 +40,7 @@ jobs:

      - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1

-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
@@ -131,7 +131,7 @@ jobs:
            type=pep440,pattern={{ version }},value=${{ fromJson(inputs.plan).announcement_tag }}
            type=pep440,pattern={{ major }}.{{ minor }},value=${{ fromJson(inputs.plan).announcement_tag }}

-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
@@ -169,7 +169,7 @@ jobs:
    steps:
      - uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1

-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
@@ -276,7 +276,7 @@ jobs:
            type=pep440,pattern={{ version }},value=${{ fromJson(inputs.plan).announcement_tag }}
            type=pep440,pattern={{ major }}.{{ minor }},value=${{ fromJson(inputs.plan).announcement_tag }}

-      - uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+      - uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -38,8 +38,7 @@ jobs:
      fuzz: ${{ steps.check_fuzzer.outputs.changed }}
      # Flag that is set to "true" when code related to ty changes.
      ty: ${{ steps.check_ty.outputs.changed }}
-      # Flag that is set to "true" when code related to the py-fuzzer folder changes.
-      py-fuzzer: ${{ steps.check_py_fuzzer.outputs.changed }}
+
      # Flag that is set to "true" when code related to the playground changes.
      playground: ${{ steps.check_playground.outputs.changed }}
    steps:
@@ -69,6 +68,7 @@ jobs:
            ':crates/ruff_text_size/**' \
            ':crates/ruff_python_ast/**' \
            ':crates/ruff_python_parser/**' \
+            ':python/py-fuzzer/**' \
            ':.github/workflows/ci.yaml' \
          ; then
              echo "changed=false" >> "$GITHUB_OUTPUT"
@@ -138,18 +138,6 @@ jobs:
              echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

-      - name: Check if the py-fuzzer code changed
-        id: check_py_fuzzer
-        env:
-          MERGE_BASE: ${{ steps.merge_base.outputs.sha }}
-        run: |
-          if git diff --quiet "${MERGE_BASE}...HEAD" -- 'python/py_fuzzer/**' \
-          ; then
-              echo "changed=false" >> "$GITHUB_OUTPUT"
-          else
-              echo "changed=true" >> "$GITHUB_OUTPUT"
-          fi
-
      - name: Check if there was any code related change
        id: check_code
        env:
@@ -250,7 +238,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: rustup show
      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        uses: rui314/setup-mold@702b1908b5edf30d71a8d1666b724e0f0c6fa035 # v1
      - name: "Install cargo nextest"
        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
        with:
@@ -308,7 +296,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: rustup show
      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        uses: rui314/setup-mold@702b1908b5edf30d71a8d1666b724e0f0c6fa035 # v1
      - name: "Install cargo nextest"
        uses: taiki-e/install-action@6064345e6658255e90e9500fdf9a06ab77e6909c # v2.57.6
        with:
@@ -393,7 +381,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: rustup show
      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        uses: rui314/setup-mold@702b1908b5edf30d71a8d1666b724e0f0c6fa035 # v1
      - name: "Build"
        run: cargo build --release --locked

@@ -418,7 +406,7 @@ jobs:
          MSRV: ${{ steps.msrv.outputs.value }}
        run: rustup default "${MSRV}"
      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        uses: rui314/setup-mold@702b1908b5edf30d71a8d1666b724e0f0c6fa035 # v1
      - name: "Build tests"
        shell: bash
        env:
@@ -441,7 +429,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: rustup show
      - name: "Install cargo-binstall"
-        uses: cargo-bins/cargo-binstall@2bb61346d075e720d4c3da92f23b6d612d5a7543 # v1.15.3
+        uses: cargo-bins/cargo-binstall@dd6a0ac24caa1243d18df0f770b941e990e8facc # v1.14.3
        with:
          tool: cargo-fuzz@0.11.2
      - name: "Install cargo-fuzz"
@@ -455,7 +443,7 @@ jobs:
    needs:
      - cargo-test-linux
      - determine_changes
-    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && (needs.determine_changes.outputs.parser == 'true' || needs.determine_changes.outputs.py-fuzzer == 'true') }}
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && needs.determine_changes.outputs.parser == 'true' }}
    timeout-minutes: 20
    env:
      FORCE_COLOR: 1
@@ -463,7 +451,7 @@ jobs:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
        name: Download Ruff binary to test
        id: download-cached-binary
@@ -645,7 +633,7 @@ jobs:
      - cargo-test-linux
      - determine_changes
    # Only runs on pull requests, since that is the only we way we can find the base version for comparison.
-    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && github.event_name == 'pull_request' && (needs.determine_changes.outputs.ty == 'true' || needs.determine_changes.outputs.py-fuzzer == 'true') }}
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-test') && github.event_name == 'pull_request' && needs.determine_changes.outputs.ty == 'true' }}
    timeout-minutes: 20
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -664,7 +652,7 @@ jobs:
          branch: ${{ github.event.pull_request.base.ref }}
          workflow: "ci.yaml"
          check_artifacts: true
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: Fuzz
        env:
          FORCE_COLOR: 1
@@ -694,7 +682,7 @@ jobs:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false
-      - uses: cargo-bins/cargo-binstall@2bb61346d075e720d4c3da92f23b6d612d5a7543 # v1.15.3
+      - uses: cargo-bins/cargo-binstall@dd6a0ac24caa1243d18df0f770b941e990e8facc # v1.14.3
      - run: cargo binstall --no-confirm cargo-shear
      - run: cargo shear

@@ -715,7 +703,7 @@ jobs:
      - name: "Prep README.md"
        run: python scripts/transform_readme.py --target pypi
      - name: "Build wheels"
-        uses: PyO3/maturin-action@86b9d133d34bc1b40018696f782949dac11bd380 # v1.49.4
+        uses: PyO3/maturin-action@e10f6c464b90acceb5f640d31beda6d586ba7b4a # v1.49.3
        with:
          args: --out dist
      - name: "Test wheel"
@@ -734,13 +722,13 @@ jobs:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
        with:
          node-version: 22
      - name: "Cache pre-commit"
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
        with:
          path: ~/.cache/pre-commit
          key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
@@ -777,7 +765,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: rustup show
      - name: Install uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: "Install Insiders dependencies"
        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
        run: uv pip install -r docs/requirements-insiders.txt --system
@@ -909,7 +897,7 @@ jobs:
          persist-credentials: false

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - name: "Install Rust toolchain"
        run: rustup show
@@ -923,7 +911,7 @@ jobs:
        run: cargo codspeed build --features "codspeed,instrumented" --no-default-features -p ruff_benchmark

      - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@76578c2a7ddd928664caa737f0e962e3085d4e7c # v3.8.1
+        uses: CodSpeedHQ/action@0b6e7a3d96c9d2a6057e7bcea6b45aaf2f7ce60b # v3.8.0
        with:
          run: cargo codspeed run
          token: ${{ secrets.CODSPEED_TOKEN }}
@@ -942,7 +930,7 @@ jobs:
          persist-credentials: false

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - name: "Install Rust toolchain"
        run: rustup show
@@ -956,7 +944,7 @@ jobs:
        run: cargo codspeed build --features "codspeed,walltime" --no-default-features -p ruff_benchmark

      - name: "Run benchmarks"
-        uses: CodSpeedHQ/action@76578c2a7ddd928664caa737f0e962e3085d4e7c # v3.8.1
+        uses: CodSpeedHQ/action@0b6e7a3d96c9d2a6057e7bcea6b45aaf2f7ce60b # v3.8.0
        with:
          run: cargo codspeed run
          token: ${{ secrets.CODSPEED_TOKEN }}
--- a/.github/workflows/daily_fuzz.yaml
+++ b/.github/workflows/daily_fuzz.yaml
@@ -34,11 +34,11 @@ jobs:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: "Install Rust toolchain"
        run: rustup show
      - name: "Install mold"
-        uses: rui314/setup-mold@725a8794d15fc7563f59595bd9556495c0564878 # v1
+        uses: rui314/setup-mold@702b1908b5edf30d71a8d1666b724e0f0c6fa035 # v1
      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
      - name: Build ruff
        # A debug build means the script runs slower once it gets started,
--- a/.github/workflows/mypy_primer.yaml
+++ b/.github/workflows/mypy_primer.yaml
@@ -11,7 +11,6 @@ on:
      - "crates/ruff_python_parser"
      - ".github/workflows/mypy_primer.yaml"
      - ".github/workflows/mypy_primer_comment.yaml"
-      - "scripts/mypy_primer.sh"
      - "Cargo.lock"
      - "!**.md"

@@ -39,7 +38,7 @@ jobs:
          persist-credentials: false

      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
        with:
@@ -82,7 +81,7 @@ jobs:
          persist-credentials: false

      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
        with:
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -22,7 +22,7 @@ jobs:
      id-token: write
    steps:
      - name: "Install uv"
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
        with:
          pattern: wheels-*
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -61,7 +61,7 @@ jobs:
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
        with:
          persist-credentials: false
          submodules: recursive
@@ -124,19 +124,19 @@ jobs:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      BUILD_MANIFEST_NAME: target/distrib/global-dist-manifest.json
    steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
        with:
          persist-credentials: false
          submodules: recursive
      - name: Install cached dist
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093
        with:
          name: cargo-dist-cache
          path: ~/.cargo/bin/
      - run: chmod +x ~/.cargo/bin/dist
      # Get all the local artifacts for the global tasks to use (for e.g. checksums)
      - name: Fetch local artifacts
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093
        with:
          pattern: artifacts-*
          path: target/distrib/
@@ -175,19 +175,19 @@ jobs:
    outputs:
      val: ${{ steps.host.outputs.manifest }}
    steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
        with:
          persist-credentials: false
          submodules: recursive
      - name: Install cached dist
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093
        with:
          name: cargo-dist-cache
          path: ~/.cargo/bin/
      - run: chmod +x ~/.cargo/bin/dist
      # Fetch artifacts from scratch-storage
      - name: Fetch artifacts
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093
        with:
          pattern: artifacts-*
          path: target/distrib/
@@ -251,13 +251,13 @@ jobs:
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
-      - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493
+      - uses: actions/checkout@09d2acae674a48949e3602304ab46fd20ae0c42f
        with:
          persist-credentials: false
          submodules: recursive
      # Create a GitHub Release while uploading all files to it
      - name: "Download GitHub Artifacts"
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
+        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093
        with:
          pattern: artifacts-*
          path: artifacts
--- a/.github/workflows/sync_typeshed.yaml
+++ b/.github/workflows/sync_typeshed.yaml
@@ -65,7 +65,7 @@ jobs:
        run: |
          git config --global user.name typeshedbot
          git config --global user.email '<>'
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: Sync typeshed stubs
        run: |
          rm -rf "ruff/${VENDORED_TYPESHED}"
@@ -117,7 +117,7 @@ jobs:
        with:
          persist-credentials: true
          ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: Setup git
        run: |
          git config --global user.name typeshedbot
@@ -155,7 +155,7 @@ jobs:
        with:
          persist-credentials: true
          ref: ${{ env.UPSTREAM_BRANCH}}
-      - uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+      - uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3
      - name: Setup git
        run: |
          git config --global user.name typeshedbot
--- a/.github/workflows/ty-ecosystem-analyzer.yaml
+++ b/.github/workflows/ty-ecosystem-analyzer.yaml
@@ -33,7 +33,7 @@ jobs:
          persist-credentials: false

      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
        with:
@@ -64,12 +64,11 @@ jobs:

          cd ..

-          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@1f560d07d672effae250e3d271da53d96c5260ff"
+          uv tool install "git+https://github.com/astral-sh/ecosystem-analyzer@27dd66d9e397d986ef9c631119ee09556eab8af9"

          ecosystem-analyzer \
            --repository ruff \
            diff \
-            --profile=release \
            --projects-old ruff/projects_old.txt \
            --projects-new ruff/projects_new.txt \
            --old old_commit \
--- a/.github/workflows/ty-ecosystem-report.yaml
+++ b/.github/workflows/ty-ecosystem-report.yaml
@@ -29,7 +29,7 @@ jobs:
          persist-credentials: false

      - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@4959332f0f014c5280e7eac8b70c90cb574c9f9b # v6.6.0
+        uses: astral-sh/setup-uv@e92bafb6253dcd438e0484186d7669ea7a8ca1cc # v6.4.3

      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
        with:
--- a/.github/workflows/typing_conformance.yaml
+++ b/.github/workflows/typing_conformance.yaml
@@ -54,9 +54,6 @@ jobs:

      - name: Compute diagnostic diff
        shell: bash
-        env:
-          # TODO: Remove this once we fixed the remaining panics in the conformance suite.
-          TY_MAX_PARALLELISM: 1
        run: |
          RUFF_DIR="$GITHUB_WORKSPACE/ruff"

@@ -66,15 +63,15 @@ jobs:

            echo "new commit"
            git rev-list --format=%s --max-count=1 "$GITHUB_SHA"
-            cargo build --bin ty
-            mv target/debug/ty ty-new
+            cargo build --release --bin ty
+            mv target/release/ty ty-new

            MERGE_BASE="$(git merge-base "$GITHUB_SHA" "origin/$GITHUB_BASE_REF")"
            git checkout -b old_commit "$MERGE_BASE"
            echo "old commit (merge base)"
            git rev-list --format=%s --max-count=1 old_commit
-            cargo build --bin ty
-            mv target/debug/ty ty-old
+            cargo build --release --bin ty
+            mv target/release/ty ty-old
          )

          (
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,133 +1,5 @@
 # Changelog

-## 0.12.12
-
-### Preview features
-
- Show fixes by default ([#19919](https://github.com/astral-sh/ruff/pull/19919))
- \[`airflow`\] Convert `DatasetOrTimeSchedule(datasets=...)` to `AssetOrTimeSchedule(assets=...)` (`AIR311`) ([#20202](https://github.com/astral-sh/ruff/pull/20202))
- \[`airflow`\] Improve the `AIR002` error message ([#20173](https://github.com/astral-sh/ruff/pull/20173))
- \[`airflow`\] Move `airflow.operators.postgres_operator.Mapping` from `AIR302` to `AIR301` ([#20172](https://github.com/astral-sh/ruff/pull/20172))
- \[`flake8-async`\] Implement `blocking-input` rule (`ASYNC250`) ([#20122](https://github.com/astral-sh/ruff/pull/20122))
- \[`flake8-use-pathlib`\] Make `PTH119` and `PTH120` fixes unsafe because they can change behavior ([#20118](https://github.com/astral-sh/ruff/pull/20118))
- \[`pylint`\] Add U+061C to `PLE2502` ([#20106](https://github.com/astral-sh/ruff/pull/20106))
- \[`ruff`\] Fix false negative for empty f-strings in `deque` calls (`RUF037`) ([#20109](https://github.com/astral-sh/ruff/pull/20109))
-
-### Bug fixes
-
- Less confidently mark f-strings as empty when inferring truthiness ([#20152](https://github.com/astral-sh/ruff/pull/20152))
- \[`fastapi`\] Fix false positive for paths with spaces around parameters (`FAST003`) ([#20077](https://github.com/astral-sh/ruff/pull/20077))
- \[`flake8-comprehensions`\] Skip `C417` when lambda contains `yield`/`yield from` ([#20201](https://github.com/astral-sh/ruff/pull/20201))
- \[`perflint`\] Handle tuples in dictionary comprehensions (`PERF403`) ([#19934](https://github.com/astral-sh/ruff/pull/19934))
-
-### Rule changes
-
- \[`pycodestyle`\] Preserve return type annotation for `ParamSpec` (`E731`) ([#20108](https://github.com/astral-sh/ruff/pull/20108))
-
-### Documentation
-
- Add fix safety sections to docs ([#17490](https://github.com/astral-sh/ruff/pull/17490),[#17499](https://github.com/astral-sh/ruff/pull/17499))
-
-## 0.12.11
-
-### Preview features
-
- \[`airflow`\] Extend `AIR311` and `AIR312` rules ([#20082](https://github.com/astral-sh/ruff/pull/20082))
- \[`airflow`\] Replace wrong path `airflow.io.storage` with `airflow.io.store` (`AIR311`) ([#20081](https://github.com/astral-sh/ruff/pull/20081))
- \[`flake8-async`\] Implement `blocking-http-call-httpx-in-async-function` (`ASYNC212`) ([#20091](https://github.com/astral-sh/ruff/pull/20091))
- \[`flake8-logging-format`\] Add auto-fix for f-string logging calls (`G004`) ([#19303](https://github.com/astral-sh/ruff/pull/19303))
- \[`flake8-use-pathlib`\] Add autofix for `PTH211` ([#20009](https://github.com/astral-sh/ruff/pull/20009))
- \[`flake8-use-pathlib`\] Make `PTH100` fix unsafe because it can change behavior ([#20100](https://github.com/astral-sh/ruff/pull/20100))
-
-### Bug fixes
-
- \[`pyflakes`, `pylint`\] Fix false positives caused by `__class__` cell handling (`F841`, `PLE0117`) ([#20048](https://github.com/astral-sh/ruff/pull/20048))
- \[`pyflakes`\] Fix `allowed-unused-imports` matching for top-level modules (`F401`) ([#20115](https://github.com/astral-sh/ruff/pull/20115))
- \[`ruff`\] Fix false positive for t-strings in `default-factory-kwarg` (`RUF026`) ([#20032](https://github.com/astral-sh/ruff/pull/20032))
- \[`ruff`\] Preserve relative whitespace in multi-line expressions (`RUF033`) ([#19647](https://github.com/astral-sh/ruff/pull/19647))
-
-### Rule changes
-
- \[`ruff`\] Handle empty t-strings in `unnecessary-empty-iterable-within-deque-call` (`RUF037`) ([#20045](https://github.com/astral-sh/ruff/pull/20045))
-
-### Documentation
-
- Fix incorrect `D413` links in docstrings convention FAQ ([#20089](https://github.com/astral-sh/ruff/pull/20089))
- \[`flake8-use-pathlib`\] Update links to the table showing the correspondence between `os` and `pathlib` ([#20103](https://github.com/astral-sh/ruff/pull/20103))
-
-## 0.12.10
-
-### Preview features
-
- \[`flake8-simplify`\] Implement fix for `maxsplit` without separator (`SIM905`) ([#19851](https://github.com/astral-sh/ruff/pull/19851))
- \[`flake8-use-pathlib`\] Add fixes for `PTH102` and `PTH103` ([#19514](https://github.com/astral-sh/ruff/pull/19514))
-
-### Bug fixes
-
- \[`isort`\] Handle multiple continuation lines after module docstring (`I002`) ([#19818](https://github.com/astral-sh/ruff/pull/19818))
- \[`pyupgrade`\] Avoid reporting `__future__` features as unnecessary when they are used (`UP010`) ([#19769](https://github.com/astral-sh/ruff/pull/19769))
- \[`pyupgrade`\] Handle nested `Optional`s (`UP045`) ([#19770](https://github.com/astral-sh/ruff/pull/19770))
-
-### Rule changes
-
- \[`pycodestyle`\] Make `E731` fix unsafe instead of display-only for class assignments ([#19700](https://github.com/astral-sh/ruff/pull/19700))
- \[`pyflakes`\] Add secondary annotation showing previous definition (`F811`) ([#19900](https://github.com/astral-sh/ruff/pull/19900))
-
-### Documentation
-
- Fix description of global config file discovery strategy ([#19188](https://github.com/astral-sh/ruff/pull/19188))
- Update outdated links to <https://typing.python.org/en/latest/source/stubs.html> ([#19992](https://github.com/astral-sh/ruff/pull/19992))
- \[`flake8-annotations`\] Remove unused import in example (`ANN401`) ([#20000](https://github.com/astral-sh/ruff/pull/20000))
-
-## 0.12.9
-
-### Preview features
-
- \[`airflow`\] Add check for `airflow.secrets.cache.SecretCache` (`AIR301`) ([#17707](https://github.com/astral-sh/ruff/pull/17707))
- \[`ruff`\] Offer a safe fix for multi-digit zeros (`RUF064`) ([#19847](https://github.com/astral-sh/ruff/pull/19847))
-
-### Bug fixes
-
- \[`flake8-blind-except`\] Fix `BLE001` false-positive on `raise ... from None` ([#19755](https://github.com/astral-sh/ruff/pull/19755))
- \[`flake8-comprehensions`\] Fix false positive for `C420` with attribute, subscript, or slice assignment targets ([#19513](https://github.com/astral-sh/ruff/pull/19513))
- \[`flake8-simplify`\] Fix handling of U+001C..U+001F whitespace (`SIM905`) ([#19849](https://github.com/astral-sh/ruff/pull/19849))
-
-### Rule changes
-
- \[`pylint`\] Use lowercase hex characters to match the formatter (`PLE2513`) ([#19808](https://github.com/astral-sh/ruff/pull/19808))
-
-### Documentation
-
- Fix `lint.future-annotations` link ([#19876](https://github.com/astral-sh/ruff/pull/19876))
-
-### Other changes
-
- Build `riscv64` binaries for release ([#19819](https://github.com/astral-sh/ruff/pull/19819))
-
- Add rule code to error description in GitLab output ([#19896](https://github.com/astral-sh/ruff/pull/19896))
-
- Improve rendering of the `full` output format ([#19415](https://github.com/astral-sh/ruff/pull/19415))
-
-    Below is an example diff for [`F401`](https://docs.astral.sh/ruff/rules/unused-import/):
-
-    ```diff
-    -unused.py:8:19: F401 [*] `pathlib` imported but unused
-    +F401 [*] `pathlib` imported but unused
-    +  --> unused.py:8:19
-        |
-      7 | # Unused, _not_ marked as required (due to the alias).
-      8 | import pathlib as non_alias
-    -   |                   ^^^^^^^^^ F401
-    +   |                   ^^^^^^^^^
-      9 |
-     10 | # Unused, marked as required.
-        |
-    -   = help: Remove unused import: `pathlib`
-    +help: Remove unused import: `pathlib`
-    ```
-
-    For now, the primary difference is the movement of the filename, line number, and column information to a second line in the header. This new representation will allow us to make further additions to Ruff's diagnostics, such as adding sub-diagnostics and multiple annotations to the same snippet.
-
 ## 0.12.8

 ### Preview features
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -128,9 +128,9 @@ dependencies = [

 [[package]]
 name = "anyhow"
-version = "1.0.99"
+version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0674a1ddeecb70197781e945de4b3b8ffb61fa939a5597bcf48503737663100"
+checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"

 [[package]]
 name = "approx"
@@ -257,9 +257,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"

 [[package]]
 name = "bitflags"
-version = "2.9.3"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34efbcccd345379ca2868b2b2c9d3782e9cc58ba87bc7d79d5b53d9c9ae6f25d"
+checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"

 [[package]]
 name = "bitvec"
@@ -295,7 +295,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "234113d19d0d7d613b40e86fb654acf958910802bcceab913a4f9e7cda03b1a4"
 dependencies = [
 "memchr",
- "regex-automata",
+ "regex-automata 0.4.9",
 "serde",
 ]

@@ -322,9 +322,9 @@ dependencies = [

 [[package]]
 name = "camino"
-version = "1.1.12"
+version = "1.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd0b03af37dad7a14518b7691d81acb0f8222604ad3d1b02f6b4bed5188c0cd5"
+checksum = "0da45bc31171d8d6960122e222a67740df867c1dd53b4d51caa297084c185cab"
 dependencies = [
 "serde",
 ]
@@ -408,9 +408,9 @@ dependencies = [

 [[package]]
 name = "clap"
-version = "4.5.46"
+version = "4.5.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c5e4fcf9c21d2e544ca1ee9d8552de13019a42aa7dbf32747fa7aaf1df76e57"
+checksum = "50fd97c9dc2399518aa331917ac6f274280ec5eb34e555dd291899745c48ec6f"
 dependencies = [
 "clap_builder",
 "clap_derive",
@@ -418,9 +418,9 @@ dependencies = [

 [[package]]
 name = "clap_builder"
-version = "4.5.46"
+version = "4.5.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fecb53a0e6fcfb055f686001bc2e2592fa527efaf38dbe81a6a9563562e57d41"
+checksum = "c35b5830294e1fa0462034af85cc95225a4cb07092c088c55bda3147cfcd8f65"
 dependencies = [
 "anstream",
 "anstyle",
@@ -461,9 +461,9 @@ dependencies = [

 [[package]]
 name = "clap_derive"
-version = "4.5.45"
+version = "4.5.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14cb31bb0a7d536caef2639baa7fad459e15c3144efefa6dbd1c84562c4739f6"
+checksum = "ef4f52386a59ca4c860f7393bcf8abd8dfd91ecccc0f774635ff68e92eeef491"
 dependencies = [
 "heck",
 "proc-macro2",
@@ -485,7 +485,7 @@ checksum = "85a8ab73a1c02b0c15597b22e09c7dc36e63b2f601f9d1e83ac0c3decd38b1ae"
 dependencies = [
 "nix 0.29.0",
 "terminfo",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "which",
 "windows-sys 0.59.0",
 ]
@@ -1084,14 +1084,14 @@ dependencies = [

 [[package]]
 name = "filetime"
-version = "0.2.26"
+version = "0.2.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc0505cd1b6fa6580283f6bdf70a73fcf4aba1184038c90902b92b3dd0df63ed"
+checksum = "35c0522e981e68cbfa8c3f978441a5f34b30b96e146b33cd3359176b50fe8586"
 dependencies = [
 "cfg-if",
 "libc",
 "libredox",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]

 [[package]]
@@ -1118,9 +1118,9 @@ checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"

 [[package]]
 name = "form_urlencoded"
-version = "1.2.2"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb4cb245038516f5f85277875cdaa4f7d2c9a0fa0468de06ed190163b1581fcf"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
 dependencies = [
 "percent-encoding",
 ]
@@ -1178,7 +1178,7 @@ checksum = "5697765925a05c9d401dd04a93dfd662d336cc25fdcc3301220385a1ffcfdde5"
 dependencies = [
 "compact_str",
 "get-size-derive2",
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 "smallvec",
 ]

@@ -1218,9 +1218,9 @@ dependencies = [

 [[package]]
 name = "glob"
-version = "0.3.3"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
+checksum = "a8d1add55171497b4705a648c6b583acafb01d58050a51727785f0b2c8e0a2b2"

 [[package]]
 name = "globset"
@@ -1231,8 +1231,8 @@ dependencies = [
 "aho-corasick",
 "bstr",
 "log",
- "regex-automata",
- "regex-syntax",
+ "regex-automata 0.4.9",
+ "regex-syntax 0.8.5",
 ]

 [[package]]
@@ -1241,7 +1241,7 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf760ebf69878d9fd8f110c89703d90ce35095324d1f1edcb595c63945ee757"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "ignore",
 "walkdir",
 ]
@@ -1264,9 +1264,9 @@ checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"

 [[package]]
 name = "hashbrown"
-version = "0.15.5"
+version = "0.15.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+checksum = "5971ac85611da7067dbfcabef3c70ebb5606018acd9e2a3903a0da507521e0d5"
 dependencies = [
 "allocator-api2",
 "equivalent",
@@ -1279,7 +1279,7 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7382cf6263419f2d8df38c55d7da83da5c18aef87fc7a7fc1fb1e344edfe14c1"
 dependencies = [
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 ]

 [[package]]
@@ -1430,9 +1430,9 @@ checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"

 [[package]]
 name = "idna"
-version = "1.1.0"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b0875f23caa03898994f6ddc501886a45c7d3d62d04d2d90788d47be1b1e4de"
+checksum = "686f825264d630750a544639377bae737628043f20d38bbc029e8f29ea968a7e"
 dependencies = [
 "idna_adapter",
 "smallvec",
@@ -1459,7 +1459,7 @@ dependencies = [
 "globset",
 "log",
 "memchr",
- "regex-automata",
+ "regex-automata 0.4.9",
 "same-file",
 "walkdir",
 "winapi-util",
@@ -1471,7 +1471,7 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17d34b7d42178945f775e84bc4c36dde7c1c6cdfea656d3354d009056f2bb3d2"
 dependencies = [
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 ]

 [[package]]
@@ -1486,12 +1486,12 @@ dependencies = [

 [[package]]
 name = "indexmap"
-version = "2.11.0"
+version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2481980430f9f78649238835720ddccc57e52df14ffce1c6f37391d61b563e9"
+checksum = "fe4cd85333e22411419a0bcae1297d25e58c9443848b11dc6a86fefe8c78a661"
 dependencies = [
 "equivalent",
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 "serde",
 ]

@@ -1521,7 +1521,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f37dccff2791ab604f9babef0ba14fbe0be30bd368dc541e2b08d07c8aa908f3"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "inotify-sys",
 "libc",
 ]
@@ -1764,9 +1764,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"

 [[package]]
 name = "libc"
-version = "0.2.175"
+version = "0.2.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
+checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"

 [[package]]
 name = "libcst"
@@ -1780,7 +1780,7 @@ dependencies = [
 "paste",
 "peg",
 "regex",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 ]

 [[package]]
@@ -1795,9 +1795,9 @@ dependencies = [

 [[package]]
 name = "libmimalloc-sys"
-version = "0.1.44"
+version = "0.1.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "667f4fec20f29dfc6bc7357c582d91796c169ad7e2fce709468aefeb2c099870"
+checksum = "bf88cd67e9de251c1781dbe2f641a1a3ad66eaae831b8a2c38fbdc5ddae16d4d"
 dependencies = [
 "cc",
 "libc",
@@ -1809,7 +1809,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "391290121bad3d37fbddad76d8f5d1c1c314cfc646d143d7e07a3086ddff0ce3"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "libc",
 "redox_syscall",
 ]
@@ -1913,11 +1913,11 @@ dependencies = [

 [[package]]
 name = "matchers"
-version = "0.2.0"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
 dependencies = [
- "regex-automata",
+ "regex-automata 0.1.10",
 ]

 [[package]]
@@ -1949,9 +1949,9 @@ dependencies = [

 [[package]]
 name = "mimalloc"
-version = "0.1.48"
+version = "0.1.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1ee66a4b64c74f4ef288bcbb9192ad9c3feaad75193129ac8509af543894fd8"
+checksum = "b1791cbe101e95af5764f06f20f6760521f7158f69dbf9d6baf941ee1bf6bc40"
 dependencies = [
 "libmimalloc-sys",
 ]
@@ -2014,7 +2014,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "cfg-if",
 "cfg_aliases",
 "libc",
@@ -2026,7 +2026,7 @@ version = "0.30.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "cfg-if",
 "cfg_aliases",
 "libc",
@@ -2054,7 +2054,7 @@ version = "8.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4d3d07927151ff8575b7087f245456e549fea62edf0ec4e565a5ee50c8402bc3"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "fsevent-sys",
 "inotify",
 "kqueue",
@@ -2074,11 +2074,12 @@ checksum = "5e0826a989adedc2a244799e823aece04662b66609d96af8dff7ac6df9a8925d"

 [[package]]
 name = "nu-ansi-term"
-version = "0.50.1"
+version = "0.46.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4a28e057d01f97e61255210fcff094d74ed0466038633e95017f5beb68e4399"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
 dependencies = [
- "windows-sys 0.52.0",
+ "overload",
+ "winapi",
 ]

 [[package]]
@@ -2126,9 +2127,9 @@ checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"

 [[package]]
 name = "ordermap"
-version = "0.5.9"
+version = "0.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fd6fedcd996c8c97932075cc3811d83f53280f48d5620e4e3cab7f6a12678c4"
+checksum = "6d6bff06e4a5dc6416bead102d3e63c480dd852ffbb278bf8cfeb4966b329609"
 dependencies = [
 "indexmap",
 "serde",
@@ -2153,6 +2154,12 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.4"
@@ -2276,9 +2283,9 @@ dependencies = [

 [[package]]
 name = "percent-encoding"
-version = "2.3.2"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"

 [[package]]
 name = "pest"
@@ -2287,7 +2294,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1db05f56d34358a8b1066f67cbb203ee3e7ed2ba674a6263a1d5ec6db2204323"
 dependencies = [
 "memchr",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "ucd-trie",
 ]

@@ -2466,9 +2473,9 @@ dependencies = [

 [[package]]
 name = "proc-macro2"
-version = "1.0.101"
+version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89ae43fd86e4158d6db51ad8e2b80f313af9cc74f5c0e03ccb87de09998732de"
+checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
 dependencies = [
 "unicode-ident",
 ]
@@ -2483,7 +2490,7 @@ dependencies = [
 "pep440_rs",
 "pep508_rs",
 "serde",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "toml 0.8.23",
 ]

@@ -2498,7 +2505,7 @@ dependencies = [
 "newtype-uuid",
 "quick-xml",
 "strip-ansi-escapes",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "uuid",
 ]

@@ -2659,7 +2666,7 @@ version = "0.5.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5407465600fb0548f1442edf71dd20683c6ed326200ace4b1ef0763521bb3b77"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 ]

 [[package]]
@@ -2670,30 +2677,39 @@ checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
 dependencies = [
 "getrandom 0.2.16",
 "libredox",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 ]

 [[package]]
 name = "regex"
-version = "1.11.2"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23d7fd106d8c02486a8d64e778353d1cffe08ce79ac2e82f540c86d0facf6912"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
 dependencies = [
 "aho-corasick",
 "memchr",
- "regex-automata",
- "regex-syntax",
+ "regex-automata 0.4.9",
+ "regex-syntax 0.8.5",
 ]

 [[package]]
 name = "regex-automata"
-version = "0.4.10"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b9458fa0bfeeac22b5ca447c63aaf45f28439a709ccd244698632f9aa6394d6"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax 0.6.29",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
 dependencies = [
 "aho-corasick",
 "memchr",
- "regex-syntax",
+ "regex-syntax 0.8.5",
 ]

 [[package]]
@@ -2702,6 +2718,12 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53a49587ad06b26609c52e423de037e7f57f20d53535d66e08c695f347df952a"

+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.5"
@@ -2721,13 +2743,13 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.12.12"
+version = "0.12.8"
 dependencies = [
 "anyhow",
 "argfile",
 "assert_fs",
 "bincode 2.0.1",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "cachedir",
 "clap",
 "clap_complete_command",
@@ -2771,7 +2793,7 @@ dependencies = [
 "strum",
 "tempfile",
 "test-case",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "tikv-jemallocator",
 "toml 0.9.5",
 "tracing",
@@ -2848,7 +2870,6 @@ dependencies = [
 "insta",
 "matchit",
 "path-slash",
- "pathdiff",
 "quick-junit",
 "ruff_annotate_snippets",
 "ruff_cache",
@@ -2865,9 +2886,8 @@ dependencies = [
 "schemars",
 "serde",
 "serde_json",
- "similar",
 "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "tracing",
 "tracing-subscriber",
 "ty_static",
@@ -2914,7 +2934,6 @@ dependencies = [
 "tracing-subscriber",
 "ty",
 "ty_project",
- "ty_python_semantic",
 "ty_static",
 "url",
 ]
@@ -2977,17 +2996,17 @@ dependencies = [

 [[package]]
 name = "ruff_linter"
-version = "0.12.12"
+version = "0.12.8"
 dependencies = [
 "aho-corasick",
 "anyhow",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "clap",
 "colored 3.0.0",
 "fern",
 "glob",
 "globset",
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 "imperative",
 "insta",
 "is-macro",
@@ -2999,9 +3018,11 @@ dependencies = [
 "memchr",
 "natord",
 "path-absolutize",
+ "pathdiff",
 "pep440_rs",
 "pyproject-toml",
 "regex",
+ "ruff_annotate_snippets",
 "ruff_cache",
 "ruff_db",
 "ruff_diagnostics",
@@ -3027,7 +3048,7 @@ dependencies = [
 "strum_macros",
 "tempfile",
 "test-case",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "toml 0.9.5",
 "typed-arena",
 "unicode-normalization",
@@ -3053,7 +3074,6 @@ name = "ruff_memory_usage"
 version = "0.0.0"
 dependencies = [
 "get-size2",
- "ordermap",
 ]

 [[package]]
@@ -3070,7 +3090,7 @@ dependencies = [
 "serde_json",
 "serde_with",
 "test-case",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "uuid",
 ]

@@ -3086,7 +3106,7 @@ name = "ruff_python_ast"
 version = "0.0.0"
 dependencies = [
 "aho-corasick",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "compact_str",
 "get-size2",
 "is-macro",
@@ -3101,7 +3121,7 @@ dependencies = [
 "salsa",
 "schemars",
 "serde",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 ]

 [[package]]
@@ -3155,7 +3175,7 @@ dependencies = [
 "similar",
 "smallvec",
 "static_assertions",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "tracing",
 ]

@@ -3174,7 +3194,7 @@ dependencies = [
 name = "ruff_python_literal"
 version = "0.0.0"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "itertools 0.14.0",
 "ruff_python_ast",
 "unic-ucd-category",
@@ -3185,7 +3205,7 @@ name = "ruff_python_parser"
 version = "0.0.0"
 dependencies = [
 "anyhow",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "bstr",
 "compact_str",
 "get-size2",
@@ -3210,7 +3230,7 @@ dependencies = [
 name = "ruff_python_semantic"
 version = "0.0.0"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "insta",
 "is-macro",
 "ruff_cache",
@@ -3231,7 +3251,7 @@ dependencies = [
 name = "ruff_python_stdlib"
 version = "0.0.0"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "unicode-ident",
 ]

@@ -3285,7 +3305,7 @@ dependencies = [
 "serde",
 "serde_json",
 "shellexpand",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "toml 0.9.5",
 "tracing",
 "tracing-log",
@@ -3315,7 +3335,7 @@ dependencies = [

 [[package]]
 name = "ruff_wasm"
-version = "0.12.12"
+version = "0.12.8"
 dependencies = [
 "console_error_panic_hook",
 "console_log",
@@ -3408,7 +3428,7 @@ version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "11181fbabf243db407ef8df94a6ce0b2f9a733bd8be4ad02b4eda9602296cac8"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "errno",
 "libc",
 "linux-raw-sys",
@@ -3430,13 +3450,13 @@ checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 [[package]]
 name = "salsa"
 version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=a3ffa22cb26756473d56f867aedec3fd907c4dd9#a3ffa22cb26756473d56f867aedec3fd907c4dd9"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=b121ee46c4483ba74c19e933a3522bd548eb7343#b121ee46c4483ba74c19e933a3522bd548eb7343"
 dependencies = [
 "boxcar",
 "compact_str",
 "crossbeam-queue",
 "crossbeam-utils",
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 "hashlink",
 "indexmap",
 "intrusive-collections",
@@ -3454,12 +3474,12 @@ dependencies = [
 [[package]]
 name = "salsa-macro-rules"
 version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=a3ffa22cb26756473d56f867aedec3fd907c4dd9#a3ffa22cb26756473d56f867aedec3fd907c4dd9"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=b121ee46c4483ba74c19e933a3522bd548eb7343#b121ee46c4483ba74c19e933a3522bd548eb7343"

 [[package]]
 name = "salsa-macros"
 version = "0.23.0"
-source = "git+https://github.com/salsa-rs/salsa.git?rev=a3ffa22cb26756473d56f867aedec3fd907c4dd9#a3ffa22cb26756473d56f867aedec3fd907c4dd9"
+source = "git+https://github.com/salsa-rs/salsa.git?rev=b121ee46c4483ba74c19e933a3522bd548eb7343#b121ee46c4483ba74c19e933a3522bd548eb7343"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -3556,9 +3576,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.143"
+version = "1.0.142"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d401abef1d108fbd9cbaebc3e46611f4b1021f714a0597a71f41ee463f5f4a5a"
+checksum = "030fedb782600dcbd6f02d479bf0d817ac3bb40d644745b769d6a96bc3afc5a7"
 dependencies = [
 "itoa",
 "memchr",
@@ -3769,9 +3789,9 @@ dependencies = [

 [[package]]
 name = "syn"
-version = "2.0.106"
+version = "2.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
+checksum = "17b6f705963418cdb9927482fa304bc562ece2fdd4f616084c50b7023b435a40"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -3895,11 +3915,11 @@ dependencies = [

 [[package]]
 name = "thiserror"
-version = "2.0.16"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3467d614147380f2e4e374161426ff399c91084acd2363eaf549172b3d5e60c0"
+checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
 dependencies = [
- "thiserror-impl 2.0.16",
+ "thiserror-impl 2.0.12",
 ]

 [[package]]
@@ -3915,9 +3935,9 @@ dependencies = [

 [[package]]
 name = "thiserror-impl"
-version = "2.0.16"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c5e1be1c48b9172ee610da68fd9cd2770e7a4056cb3fc98710ee6906f0c7960"
+checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -4116,9 +4136,9 @@ dependencies = [

 [[package]]
 name = "tracing-indicatif"
-version = "0.3.13"
+version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04d4e11e0e27acef25a47f27e9435355fecdc488867fa2bc90e75b0700d2823d"
+checksum = "e1983afead46ff13a3c93581e0cec31d20b29efdd22cbdaa8b9f850eccf2c352"
 dependencies = [
 "indicatif",
 "tracing",
@@ -4139,15 +4159,15 @@ dependencies = [

 [[package]]
 name = "tracing-subscriber"
-version = "0.3.20"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2054a14f5307d601f88daf0553e1cbf472acc4f2c51afab632431cdcd72124d5"
+checksum = "e8189decb5ac0fa7bc8b96b7cb9b2701d60d48805aca84a238004d665fcc4008"
 dependencies = [
 "chrono",
 "matchers",
 "nu-ansi-term",
 "once_cell",
- "regex-automata",
+ "regex",
 "sharded-slab",
 "smallvec",
 "thread_local",
@@ -4218,23 +4238,17 @@ dependencies = [
 name = "ty_ide"
 version = "0.0.0"
 dependencies = [
- "bitflags 2.9.3",
- "camino",
- "get-size2",
+ "bitflags 2.9.1",
 "insta",
 "itertools 0.14.0",
- "rayon",
 "regex",
 "ruff_db",
- "ruff_index",
- "ruff_memory_usage",
 "ruff_python_ast",
 "ruff_python_parser",
 "ruff_python_trivia",
 "ruff_source_file",
 "ruff_text_size",
 "rustc-hash",
- "salsa",
 "smallvec",
 "tracing",
 "ty_project",
@@ -4257,7 +4271,7 @@ dependencies = [
 "pep440_rs",
 "rayon",
 "regex",
- "regex-automata",
+ "regex-automata 0.4.9",
 "ruff_cache",
 "ruff_db",
 "ruff_macros",
@@ -4270,7 +4284,7 @@ dependencies = [
 "salsa",
 "schemars",
 "serde",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "toml 0.9.5",
 "tracing",
 "ty_combine",
@@ -4283,7 +4297,7 @@ name = "ty_python_semantic"
 version = "0.0.0"
 dependencies = [
 "anyhow",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "bitvec",
 "camino",
 "colored 3.0.0",
@@ -4292,7 +4306,7 @@ dependencies = [
 "drop_bomb",
 "get-size2",
 "glob",
- "hashbrown 0.15.5",
+ "hashbrown 0.15.4",
 "indexmap",
 "insta",
 "itertools 0.14.0",
@@ -4323,7 +4337,7 @@ dependencies = [
 "strum_macros",
 "tempfile",
 "test-case",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "tracing",
 "ty_python_semantic",
 "ty_static",
@@ -4336,7 +4350,7 @@ name = "ty_server"
 version = "0.0.0"
 dependencies = [
 "anyhow",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "crossbeam",
 "dunce",
 "insta",
@@ -4357,7 +4371,7 @@ dependencies = [
 "serde_json",
 "shellexpand",
 "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "tracing",
 "tracing-subscriber",
 "ty_combine",
@@ -4379,7 +4393,7 @@ name = "ty_test"
 version = "0.0.0"
 dependencies = [
 "anyhow",
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 "camino",
 "colored 3.0.0",
 "insta",
@@ -4398,7 +4412,7 @@ dependencies = [
 "serde",
 "smallvec",
 "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.12",
 "toml 0.9.5",
 "tracing",
 "ty_python_semantic",
@@ -4575,9 +4589,9 @@ checksum = "6d49784317cd0d1ee7ec5c716dd598ec5b4483ea832a2dced265471cc0f690ae"

 [[package]]
 name = "url"
-version = "2.5.7"
+version = "2.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08bc136a29a3d1758e07a9cca267be308aeebf5cfd5a10f3f67ab2097683ef5b"
+checksum = "32f8b686cadd1473f4bd0117a5d28d36b1ade384ea9b5069a1c40aefed7fda60"
 dependencies = [
 "form_urlencoded",
 "idna",
@@ -4871,6 +4885,22 @@ dependencies = [
 "glob",
 ]

+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.9"
@@ -4880,6 +4910,12 @@ dependencies = [
 "windows-sys 0.59.0",
 ]

+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-core"
 version = "0.61.2"
@@ -4939,15 +4975,6 @@ dependencies = [
 "windows-link",
 ]

-[[package]]
-name = "windows-sys"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
-dependencies = [
- "windows-targets 0.52.6",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -5116,7 +5143,7 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
 dependencies = [
- "bitflags 2.9.3",
+ "bitflags 2.9.1",
 ]

 [[package]]
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ resolver = "2"
 [workspace.package]
 # Please update rustfmt.toml when bumping the Rust edition
 edition = "2024"
-rust-version = "1.87"
+rust-version = "1.86"
 homepage = "https://docs.astral.sh/ruff"
 documentation = "https://docs.astral.sh/ruff"
 repository = "https://github.com/astral-sh/ruff"
@@ -143,7 +143,7 @@ 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 = "a3ffa22cb26756473d56f867aedec3fd907c4dd9", default-features = false, features = [
+salsa = { git = "https://github.com/salsa-rs/salsa.git", rev = "b121ee46c4483ba74c19e933a3522bd548eb7343", default-features = false, features = [
    "compact_str",
    "macros",
    "salsa_unstable",
@@ -215,8 +215,6 @@ unexpected_cfgs = { level = "warn", check-cfg = [

 [workspace.lints.clippy]
 pedantic = { level = "warn", priority = -2 }
-# Enabled at the crate level
-disallowed_methods = "allow"
 # Allowed pedantic lints
 char_lit_as_u8 = "allow"
 collapsible_else_if = "allow"
@@ -255,7 +253,6 @@ unused_peekable = "warn"
 # Diagnostics are not actionable: Enable once https://github.com/rust-lang/rust-clippy/issues/13774 is resolved.
 large_stack_arrays = "allow"

-
 [profile.release]
 # Note that we set these explicitly, and these values
 # were chosen based on a trade-off between compile times
--- a/1160
+++ b/1160
--- a/README.md
+++ b/README.md
@@ -148,8 +148,8 @@ curl -LsSf https://astral.sh/ruff/install.sh | sh
 powershell -c "irm https://astral.sh/ruff/install.ps1 | iex"

 # For a specific version.
-curl -LsSf https://astral.sh/ruff/0.12.12/install.sh | sh
-powershell -c "irm https://astral.sh/ruff/0.12.12/install.ps1 | iex"
+curl -LsSf https://astral.sh/ruff/0.12.8/install.sh | sh
+powershell -c "irm https://astral.sh/ruff/0.12.8/install.ps1 | iex"
 ```

 You can also install Ruff via [Homebrew](https://formulae.brew.sh/formula/ruff), [Conda](https://anaconda.org/conda-forge/ruff),
@@ -182,7 +182,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com/) hook via [`ruff
 ```yaml
 - repo: https://github.com/astral-sh/ruff-pre-commit
  # Ruff version.
-  rev: v0.12.12
+  rev: v0.12.8
  hooks:
    # Run the linter.
    - id: ruff-check
--- a/clippy.toml
+++ b/clippy.toml
@@ -24,20 +24,3 @@ ignore-interior-mutability = [
    # The expression is read-only.
    "ruff_python_ast::hashable::HashableExpr",
 ]
-
-disallowed-methods = [
-    { path = "std::env::var", reason = "Use System::env_var instead in ty crates" },
-    { path = "std::env::current_dir", reason = "Use System::current_directory instead in ty crates" },
-    { path = "std::fs::read_to_string", reason = "Use System::read_to_string instead in ty crates" },
-    { path = "std::fs::metadata", reason = "Use System::path_metadata instead in ty crates" },
-    { path = "std::fs::canonicalize", reason = "Use System::canonicalize_path instead in ty crates" },
-    { path = "dunce::canonicalize", reason = "Use System::canonicalize_path instead in ty crates" },
-    { path = "std::fs::read_dir", reason = "Use System::read_directory instead in ty crates" },
-    { path = "std::fs::write", reason = "Use WritableSystem::write_file instead in ty crates" },
-    { path = "std::fs::create_dir_all", reason = "Use WritableSystem::create_directory_all instead in ty crates" },
-    { path = "std::fs::File::create_new", reason = "Use WritableSystem::create_new_file instead in ty crates" },
-    # Path methods that have System trait equivalents
-    { path = "std::path::Path::exists", reason = "Use System::path_exists instead in ty crates" },
-    { path = "std::path::Path::is_dir", reason = "Use System::is_directory instead in ty crates" },
-    { path = "std::path::Path::is_file", reason = "Use System::is_file instead in ty crates" },
-]
--- a/crates/ruff/Cargo.toml
+++ b/crates/ruff/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.12.12"
+version = "0.12.8"
 publish = true
 authors = { workspace = true }
 edition = { workspace = true }
@@ -85,7 +85,7 @@ dist = true
 [target.'cfg(target_os = "windows")'.dependencies]
 mimalloc = { workspace = true }

-[target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), not(target_os = "aix"), not(target_os = "android"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64", target_arch = "riscv64")))'.dependencies]
+[target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), not(target_os = "aix"), not(target_os = "android"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dependencies]
 tikv-jemallocator = { workspace = true }

 [lints]
--- a/crates/ruff/src/cache.rs
+++ b/crates/ruff/src/cache.rs
@@ -13,16 +13,25 @@ use itertools::Itertools;
 use log::{debug, error};
 use rayon::iter::ParallelIterator;
 use rayon::iter::{IntoParallelIterator, ParallelBridge};
+use ruff_linter::codes::Rule;
 use rustc_hash::FxHashMap;
 use tempfile::NamedTempFile;

 use ruff_cache::{CacheKey, CacheKeyHasher};
+use ruff_db::diagnostic::Diagnostic;
+use ruff_diagnostics::Fix;
+use ruff_linter::message::create_lint_diagnostic;
 use ruff_linter::package::PackageRoot;
 use ruff_linter::{VERSION, warn_user};
 use ruff_macros::CacheKey;
+use ruff_notebook::NotebookIndex;
+use ruff_source_file::SourceFileBuilder;
+use ruff_text_size::{TextRange, TextSize};
 use ruff_workspace::Settings;
 use ruff_workspace::resolver::Resolver;

+use crate::diagnostics::Diagnostics;
+
 /// [`Path`] that is relative to the package root in [`PackageCache`].
 pub(crate) type RelativePath = Path;
 /// [`PathBuf`] that is relative to the package root in [`PackageCache`].
@@ -289,8 +298,13 @@ impl Cache {
        });
    }

-    pub(crate) fn set_linted(&self, path: RelativePathBuf, key: &FileCacheKey, yes: bool) {
-        self.update(path, key, ChangeData::Linted(yes));
+    pub(crate) fn update_lint(
+        &self,
+        path: RelativePathBuf,
+        key: &FileCacheKey,
+        data: LintCacheData,
+    ) {
+        self.update(path, key, ChangeData::Lint(data));
    }

    pub(crate) fn set_formatted(&self, path: RelativePathBuf, key: &FileCacheKey) {
@@ -325,15 +339,42 @@ pub(crate) struct FileCache {
 }

 impl FileCache {
-    /// Return whether or not the file in the cache was linted and found to have no diagnostics.
-    pub(crate) fn linted(&self) -> bool {
-        self.data.linted
+    /// Convert the file cache into `Diagnostics`, using `path` as file name.
+    pub(crate) fn to_diagnostics(&self, path: &Path) -> Option<Diagnostics> {
+        self.data.lint.as_ref().map(|lint| {
+            let diagnostics = if lint.messages.is_empty() {
+                Vec::new()
+            } else {
+                let file = SourceFileBuilder::new(path.to_string_lossy(), &*lint.source).finish();
+                lint.messages
+                    .iter()
+                    .map(|msg| {
+                        create_lint_diagnostic(
+                            &msg.body,
+                            msg.suggestion.as_ref(),
+                            msg.range,
+                            msg.fix.clone(),
+                            msg.parent,
+                            file.clone(),
+                            msg.noqa_offset,
+                            msg.rule,
+                        )
+                    })
+                    .collect()
+            };
+            let notebook_indexes = if let Some(notebook_index) = lint.notebook_index.as_ref() {
+                FxHashMap::from_iter([(path.to_string_lossy().to_string(), notebook_index.clone())])
+            } else {
+                FxHashMap::default()
+            };
+            Diagnostics::new(diagnostics, notebook_indexes)
+        })
    }
 }

 #[derive(Debug, Default, bincode::Decode, bincode::Encode)]
 struct FileCacheData {
-    linted: bool,
+    lint: Option<LintCacheData>,
    formatted: bool,
 }

@@ -369,6 +410,88 @@ pub(crate) fn init(path: &Path) -> Result<()> {
    Ok(())
 }

+#[derive(bincode::Decode, Debug, bincode::Encode, PartialEq)]
+pub(crate) struct LintCacheData {
+    /// Imports made.
+    // pub(super) imports: ImportMap,
+    /// Diagnostic messages.
+    pub(super) messages: Vec<CacheMessage>,
+    /// Source code of the file.
+    ///
+    /// # Notes
+    ///
+    /// This will be empty if `messages` is empty.
+    pub(super) source: String,
+    /// Notebook index if this file is a Jupyter Notebook.
+    #[bincode(with_serde)]
+    pub(super) notebook_index: Option<NotebookIndex>,
+}
+
+impl LintCacheData {
+    pub(crate) fn from_diagnostics(
+        diagnostics: &[Diagnostic],
+        notebook_index: Option<NotebookIndex>,
+    ) -> Self {
+        let source = if let Some(msg) = diagnostics.first() {
+            msg.expect_ruff_source_file().source_text().to_owned()
+        } else {
+            String::new() // No messages, no need to keep the source!
+        };
+
+        let messages = diagnostics
+            .iter()
+            // Parse the kebab-case rule name into a `Rule`. This will fail for syntax errors, so
+            // this also serves to filter them out, but we shouldn't be caching files with syntax
+            // errors anyway.
+            .filter_map(|msg| Some((msg.name().parse().ok()?, msg)))
+            .map(|(rule, msg)| {
+                // Make sure that all message use the same source file.
+                assert_eq!(
+                    msg.expect_ruff_source_file(),
+                    diagnostics.first().unwrap().expect_ruff_source_file(),
+                    "message uses a different source file"
+                );
+                CacheMessage {
+                    rule,
+                    body: msg.body().to_string(),
+                    suggestion: msg.first_help_text().map(ToString::to_string),
+                    range: msg.expect_range(),
+                    parent: msg.parent(),
+                    fix: msg.fix().cloned(),
+                    noqa_offset: msg.noqa_offset(),
+                }
+            })
+            .collect();
+
+        Self {
+            messages,
+            source,
+            notebook_index,
+        }
+    }
+}
+
+/// On disk representation of a diagnostic message.
+#[derive(bincode::Decode, Debug, bincode::Encode, PartialEq)]
+pub(super) struct CacheMessage {
+    /// The rule for the cached diagnostic.
+    #[bincode(with_serde)]
+    rule: Rule,
+    /// The message body to display to the user, to explain the diagnostic.
+    body: String,
+    /// The message to display to the user, to explain the suggested fix.
+    suggestion: Option<String>,
+    /// Range into the message's [`FileCache::source`].
+    #[bincode(with_serde)]
+    range: TextRange,
+    #[bincode(with_serde)]
+    parent: Option<TextSize>,
+    #[bincode(with_serde)]
+    fix: Option<Fix>,
+    #[bincode(with_serde)]
+    noqa_offset: Option<TextSize>,
+}
+
 pub(crate) trait PackageCaches {
    fn get(&self, package_root: &Path) -> Option<&Cache>;

@@ -456,15 +579,15 @@ struct Change {

 #[derive(Debug)]
 enum ChangeData {
-    Linted(bool),
+    Lint(LintCacheData),
    Formatted,
 }

 impl ChangeData {
    fn apply(self, data: &mut FileCacheData) {
        match self {
-            ChangeData::Linted(yes) => {
-                data.linted = yes;
+            ChangeData::Lint(new_lint) => {
+                data.lint = Some(new_lint);
            }
            ChangeData::Formatted => {
                data.formatted = true;
@@ -489,6 +612,7 @@ mod tests {
    use test_case::test_case;

    use ruff_cache::CACHE_DIR_NAME;
+    use ruff_db::diagnostic::Diagnostic;
    use ruff_linter::package::PackageRoot;
    use ruff_linter::settings::LinterSettings;
    use ruff_linter::settings::flags;
@@ -496,7 +620,7 @@ mod tests {
    use ruff_python_ast::{PySourceType, PythonVersion};
    use ruff_workspace::Settings;

-    use crate::cache::{self, ChangeData, FileCache, FileCacheData, FileCacheKey};
+    use crate::cache::{self, FileCache, FileCacheData, FileCacheKey};
    use crate::cache::{Cache, RelativePathBuf};
    use crate::commands::format::{FormatCommandError, FormatMode, FormatResult, format_path};
    use crate::diagnostics::{Diagnostics, lint_path};
@@ -523,7 +647,7 @@ mod tests {
        assert_eq!(cache.changes.lock().unwrap().len(), 0);

        let mut paths = Vec::new();
-        let mut paths_with_diagnostics = Vec::new();
+        let mut parse_errors = Vec::new();
        let mut expected_diagnostics = Diagnostics::default();
        for entry in fs::read_dir(&package_root).unwrap() {
            let entry = entry.unwrap();
@@ -547,7 +671,7 @@ mod tests {
                    continue;
                }

-                let mut diagnostics = lint_path(
+                let diagnostics = lint_path(
                    &path,
                    Some(PackageRoot::root(&package_root)),
                    &settings.linter,
@@ -557,15 +681,8 @@ mod tests {
                    UnsafeFixes::Enabled,
                )
                .unwrap();
-                if diagnostics.inner.is_empty() {
-                    // We won't load a notebook index from the cache for files without diagnostics,
-                    // so remove them from `expected_diagnostics` too. This allows us to keep the
-                    // full equality assertion below.
-                    diagnostics
-                        .notebook_indexes
-                        .remove(&path.to_string_lossy().to_string());
-                } else {
-                    paths_with_diagnostics.push(path.clone());
+                if diagnostics.inner.iter().any(Diagnostic::is_invalid_syntax) {
+                    parse_errors.push(path.clone());
                }
                paths.push(path);
                expected_diagnostics += diagnostics;
@@ -578,11 +695,11 @@ mod tests {
        let cache = Cache::open(package_root.clone(), &settings);
        assert_ne!(cache.package.files.len(), 0);

-        paths_with_diagnostics.sort();
+        parse_errors.sort();

        for path in &paths {
-            if paths_with_diagnostics.binary_search(path).is_ok() {
-                continue; // We don't cache files with diagnostics.
+            if parse_errors.binary_search(path).is_ok() {
+                continue; // We don't cache parsing errors.
            }

            let relative_path = cache.relative_path(path).unwrap();
@@ -616,7 +733,7 @@ mod tests {

    #[test]
    fn cache_adds_file_on_lint() {
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";

        let test_cache = TestCache::new("cache_adds_file_on_lint");
        let cache = test_cache.open();
@@ -640,7 +757,7 @@ mod tests {

    #[test]
    fn cache_adds_files_on_lint() {
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";

        let test_cache = TestCache::new("cache_adds_files_on_lint");
        let cache = test_cache.open();
@@ -665,40 +782,6 @@ mod tests {
        cache.persist().unwrap();
    }

-    #[test]
-    fn cache_does_not_add_file_on_lint_with_diagnostic() {
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";
-
-        let test_cache = TestCache::new("cache_does_not_add_file_on_lint_with_diagnostic");
-        let cache = test_cache.open();
-        test_cache.write_source_file("source.py", source);
-        assert_eq!(cache.changes.lock().unwrap().len(), 0);
-
-        cache.persist().unwrap();
-        let cache = test_cache.open();
-
-        let results = test_cache
-            .lint_file_with_cache("source.py", &cache)
-            .expect("Failed to lint test file");
-        assert_eq!(results.inner.len(), 1, "Expected one F822 diagnostic");
-        assert_eq!(
-            cache.changes.lock().unwrap().len(),
-            1,
-            "Files with diagnostics still trigger change events"
-        );
-        assert!(
-            cache
-                .changes
-                .lock()
-                .unwrap()
-                .last()
-                .is_some_and(|change| matches!(change.new_data, ChangeData::Linted(false))),
-            "Files with diagnostics are marked as unlinted"
-        );
-
-        cache.persist().unwrap();
-    }
-
    #[test]
    fn cache_adds_files_on_format() {
        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";
@@ -729,7 +812,7 @@ mod tests {

    #[test]
    fn cache_invalidated_on_file_modified_time() {
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";

        let test_cache = TestCache::new("cache_invalidated_on_file_modified_time");
        let cache = test_cache.open();
@@ -786,7 +869,7 @@ mod tests {
            file.set_permissions(perms)
        }

-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";

        let test_cache = TestCache::new("cache_invalidated_on_permission_change");
        let cache = test_cache.open();
@@ -839,7 +922,7 @@ mod tests {
        );

        // Now actually lint a file.
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";
        test_cache.write_source_file("new.py", source);
        let new_path_key = RelativePathBuf::from("new.py");
        assert_eq!(cache.changes.lock().unwrap().len(), 0);
@@ -862,7 +945,7 @@ mod tests {

    #[test]
    fn format_updates_cache_entry() {
-        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\"])\n";
+        let source: &[u8] = b"a = 1\n\n__all__ = list([\"a\", \"b\"])\n";

        let test_cache = TestCache::new("format_updates_cache_entry");
        let cache = test_cache.open();
@@ -896,7 +979,7 @@ mod tests {
            panic!("Cache entry for `source.py` is missing.");
        };

-        assert!(file_cache.data.linted);
+        assert!(file_cache.data.lint.is_some());
        assert!(file_cache.data.formatted);
    }

@@ -946,7 +1029,7 @@ mod tests {
            panic!("Cache entry for `source.py` is missing.");
        };

-        assert!(!file_cache.data.linted);
+        assert_eq!(file_cache.data.lint, None);
        assert!(file_cache.data.formatted);
    }

--- a/crates/ruff/src/diagnostics.rs
+++ b/crates/ruff/src/diagnostics.rs
@@ -20,21 +20,15 @@ use ruff_linter::settings::types::UnsafeFixes;
 use ruff_linter::settings::{LinterSettings, flags};
 use ruff_linter::source_kind::{SourceError, SourceKind};
 use ruff_linter::{IOError, Violation, fs};
-use ruff_notebook::{NotebookError, NotebookIndex};
+use ruff_notebook::{Notebook, NotebookError, NotebookIndex};
 use ruff_python_ast::{PySourceType, SourceType, TomlSourceType};
 use ruff_source_file::SourceFileBuilder;
 use ruff_text_size::TextRange;
 use ruff_workspace::Settings;
 use rustc_hash::FxHashMap;

-use crate::cache::{Cache, FileCache, FileCacheKey};
+use crate::cache::{Cache, FileCacheKey, LintCacheData};

-/// A collection of [`Diagnostic`]s and additional information needed to render them.
-///
-/// Note that `notebook_indexes` may be empty if there are no diagnostics because the
-/// `NotebookIndex` isn't cached in this case. This isn't a problem for any current uses as of
-/// 2025-08-12, which are all related to diagnostic rendering, but could be surprising if used
-/// differently in the future.
 #[derive(Debug, Default, PartialEq)]
 pub(crate) struct Diagnostics {
    pub(crate) inner: Vec<Diagnostic>,
@@ -199,9 +193,19 @@ pub(crate) fn lint_path(
            let cache_key = FileCacheKey::from_path(path).context("Failed to create cache key")?;
            let cached_diagnostics = cache
                .get(relative_path, &cache_key)
-                .is_some_and(FileCache::linted);
-            if cached_diagnostics {
-                return Ok(Diagnostics::default());
+                .and_then(|entry| entry.to_diagnostics(path));
+            if let Some(diagnostics) = cached_diagnostics {
+                // `FixMode::Generate` and `FixMode::Diff` rely on side-effects (writing to disk,
+                // and writing the diff to stdout, respectively). If a file has diagnostics, we
+                // need to avoid reading from and writing to the cache in these modes.
+                if match fix_mode {
+                    flags::FixMode::Generate => true,
+                    flags::FixMode::Apply | flags::FixMode::Diff => {
+                        diagnostics.inner.is_empty() && diagnostics.fixed.is_empty()
+                    }
+                } {
+                    return Ok(diagnostics);
+                }
            }

            // Stash the file metadata for later so when we update the cache it reflects the prerun
@@ -318,21 +322,31 @@ pub(crate) fn lint_path(
            (result, transformed, fixed)
        };

+    let has_error = result.has_syntax_errors();
    let diagnostics = result.diagnostics;

    if let Some((cache, relative_path, key)) = caching {
-        // `FixMode::Apply` and `FixMode::Diff` rely on side-effects (writing to disk,
-        // and writing the diff to stdout, respectively). If a file has diagnostics
-        // with fixes, we need to avoid reading from and writing to the cache in these
-        // modes.
-        let use_fixes = match fix_mode {
-            flags::FixMode::Generate => true,
-            flags::FixMode::Apply | flags::FixMode::Diff => fixed.is_empty(),
-        };
-
-        // We don't cache files with diagnostics.
-        let linted = diagnostics.is_empty() && use_fixes;
-        cache.set_linted(relative_path.to_owned(), &key, linted);
+        // We don't cache parsing errors.
+        if !has_error {
+            // `FixMode::Apply` and `FixMode::Diff` rely on side-effects (writing to disk,
+            // and writing the diff to stdout, respectively). If a file has diagnostics, we
+            // need to avoid reading from and writing to the cache in these modes.
+            if match fix_mode {
+                flags::FixMode::Generate => true,
+                flags::FixMode::Apply | flags::FixMode::Diff => {
+                    diagnostics.is_empty() && fixed.is_empty()
+                }
+            } {
+                cache.update_lint(
+                    relative_path.to_owned(),
+                    &key,
+                    LintCacheData::from_diagnostics(
+                        &diagnostics,
+                        transformed.as_ipy_notebook().map(Notebook::index).cloned(),
+                    ),
+                );
+            }
+        }
    }

    let notebook_indexes = if let SourceKind::IpyNotebook(notebook) = transformed {
--- a/crates/ruff/src/main.rs
+++ b/crates/ruff/src/main.rs
@@ -19,8 +19,7 @@ static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[global_allocator]
--- a/crates/ruff/src/printer.rs
+++ b/crates/ruff/src/printer.rs
@@ -15,7 +15,8 @@ use ruff_db::diagnostic::{
 use ruff_linter::fs::relativize_path;
 use ruff_linter::logging::LogLevel;
 use ruff_linter::message::{
-    Emitter, EmitterContext, GithubEmitter, GroupedEmitter, SarifEmitter, TextEmitter,
+    Emitter, EmitterContext, GithubEmitter, GitlabEmitter, GroupedEmitter, SarifEmitter,
+    TextEmitter,
 };
 use ruff_linter::notify_user;
 use ruff_linter::settings::flags::{self};
@@ -30,6 +31,8 @@ bitflags! {
        const SHOW_VIOLATIONS = 1 << 0;
        /// Whether to show a summary of the fixed violations when emitting diagnostics.
        const SHOW_FIX_SUMMARY = 1 << 1;
+        /// Whether to show a diff of each fixed violation when emitting diagnostics.
+        const SHOW_FIX_DIFF = 1 << 2;
    }
 }

@@ -258,9 +261,9 @@ impl Printer {
            OutputFormat::Concise | OutputFormat::Full => {
                TextEmitter::default()
                    .with_show_fix_status(show_fix_status(self.fix_mode, fixables.as_ref()))
-                    .with_show_fix_diff(self.format == OutputFormat::Full && preview)
+                    .with_show_fix_diff(self.flags.intersects(Flags::SHOW_FIX_DIFF))
                    .with_show_source(self.format == OutputFormat::Full)
-                    .with_fix_applicability(self.unsafe_fixes.required_applicability())
+                    .with_unsafe_fixes(self.unsafe_fixes)
                    .with_preview(preview)
                    .emit(writer, &diagnostics.inner, &context)?;

@@ -293,11 +296,7 @@ impl Printer {
                GithubEmitter.emit(writer, &diagnostics.inner, &context)?;
            }
            OutputFormat::Gitlab => {
-                let config = DisplayDiagnosticConfig::default()
-                    .format(DiagnosticFormat::Gitlab)
-                    .preview(preview);
-                let value = DisplayDiagnostics::new(&context, &config, &diagnostics.inner);
-                write!(writer, "{value}")?;
+                GitlabEmitter::default().emit(writer, &diagnostics.inner, &context)?;
            }
            OutputFormat::Pylint => {
                let config = DisplayDiagnosticConfig::default()
@@ -462,7 +461,7 @@ impl Printer {
            TextEmitter::default()
                .with_show_fix_status(show_fix_status(self.fix_mode, fixables.as_ref()))
                .with_show_source(preview)
-                .with_fix_applicability(self.unsafe_fixes.required_applicability())
+                .with_unsafe_fixes(self.unsafe_fixes)
                .emit(writer, &diagnostics.inner, &context)?;
        }
        writer.flush()?;
--- a/crates/ruff/tests/integration_test.rs
+++ b/crates/ruff/tests/integration_test.rs
@@ -115,13 +115,12 @@ fn stdin_error() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> -:1:8
+    -:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

    Found 1 error.
    [*] 1 fixable with the `--fix` option.
@@ -140,13 +139,12 @@ fn stdin_filename() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> F401.py:1:8
+    F401.py:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

    Found 1 error.
    [*] 1 fixable with the `--fix` option.
@@ -176,21 +174,19 @@ import bar   # unused import
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `bar` imported but unused
-     --> bar.py:2:8
+    bar.py:2:8: F401 [*] `bar` imported but unused
      |
    2 | import bar   # unused import
-      |        ^^^
+      |        ^^^ F401
      |
-    help: Remove unused import: `bar`
+      = help: Remove unused import: `bar`

-    F401 [*] `foo` imported but unused
-     --> foo.py:2:8
+    foo.py:2:8: F401 [*] `foo` imported but unused
      |
    2 | import foo   # unused import
-      |        ^^^
+      |        ^^^ F401
      |
-    help: Remove unused import: `foo`
+      = help: Remove unused import: `foo`

    Found 2 errors.
    [*] 2 fixable with the `--fix` option.
@@ -212,13 +208,12 @@ fn check_warn_stdin_filename_with_files() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> F401.py:1:8
+    F401.py:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

    Found 1 error.
    [*] 1 fixable with the `--fix` option.
@@ -239,13 +234,12 @@ fn stdin_source_type_py() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> TCH.py:1:8
+    TCH.py:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

    Found 1 error.
    [*] 1 fixable with the `--fix` option.
@@ -477,11 +471,10 @@ fn stdin_fix_jupyter() {
     "nbformat_minor": 5
    }
    ----- stderr -----
-    F821 Undefined name `x`
-     --> Jupyter.ipynb:cell 3:1:7
+    Jupyter.ipynb:cell 3:1:7: F821 Undefined name `x`
      |
    1 | print(x)
-      |       ^
+      |       ^ F821
      |

    Found 3 errors (2 fixed, 1 remaining).
@@ -576,21 +569,19 @@ fn stdin_override_parser_ipynb() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> Jupyter.py:cell 1:1:8
+    Jupyter.py:cell 1:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

-    F401 [*] `sys` imported but unused
-     --> Jupyter.py:cell 3:1:8
+    Jupyter.py:cell 3:1:8: F401 [*] `sys` imported but unused
      |
    1 | import sys
-      |        ^^^
+      |        ^^^ F401
      |
-    help: Remove unused import: `sys`
+      = help: Remove unused import: `sys`

    Found 2 errors.
    [*] 2 fixable with the `--fix` option.
@@ -614,13 +605,12 @@ fn stdin_override_parser_py() {
    success: false
    exit_code: 1
    ----- stdout -----
-    F401 [*] `os` imported but unused
-     --> F401.ipynb:1:8
+    F401.ipynb:1:8: F401 [*] `os` imported but unused
      |
    1 | import os
-      |        ^^
+      |        ^^ F401
      |
-    help: Remove unused import: `os`
+      = help: Remove unused import: `os`

    Found 1 error.
    [*] 1 fixable with the `--fix` option.
@@ -643,13 +633,12 @@ fn stdin_fix_when_not_fixable_should_still_print_contents() {
         print(sys.version)

    ----- stderr -----
-    F634 If test is a tuple, which is always `True`
-     --> -:3:4
+    -:3:4: F634 If test is a tuple, which is always `True`
      |
    1 | import sys
    2 |
    3 | if (1, 2):
-      |    ^^^^^^
+      |    ^^^^^^ F634
    4 |      print(sys.version)
      |

@@ -809,8 +798,7 @@ fn stdin_parse_error() {
    success: false
    exit_code: 1
    ----- stdout -----
-    invalid-syntax: Expected one or more symbol names after import
-     --> -:1:16
+    -:1:16: invalid-syntax: Expected one or more symbol names after import
      |
    1 | from foo import
      |                ^
@@ -830,16 +818,14 @@ fn stdin_multiple_parse_error() {
    success: false
    exit_code: 1
    ----- stdout -----
-    invalid-syntax: Expected one or more symbol names after import
-     --> -:1:16
+    -:1:16: invalid-syntax: Expected one or more symbol names after import
      |
    1 | from foo import
      |                ^
    2 | bar =
      |

-    invalid-syntax: Expected an expression
-     --> -:2:6
+    -:2:6: invalid-syntax: Expected an expression
      |
    1 | from foo import
    2 | bar =
@@ -861,8 +847,7 @@ fn parse_error_not_included() {
    success: false
    exit_code: 1
    ----- stdout -----
-    invalid-syntax: Expected an expression
-     --> -:1:6
+    -:1:6: invalid-syntax: Expected an expression
      |
    1 | foo =
      |      ^
@@ -882,11 +867,10 @@ fn full_output_preview() {
    success: false
    exit_code: 1
    ----- stdout -----
-    E741 Ambiguous variable name: `l`
-     --> -:1:1
+    -:1:1: E741 Ambiguous variable name: `l`
      |
    1 | l = 1
-      | ^
+      | ^ E741
      |

    Found 1 error.
@@ -911,11 +895,10 @@ preview = true
    success: false
    exit_code: 1
    ----- stdout -----
-    E741 Ambiguous variable name: `l`
-     --> -:1:1
+    -:1:1: E741 Ambiguous variable name: `l`
      |
    1 | l = 1
-      | ^
+      | ^ E741
      |

    Found 1 error.
@@ -933,11 +916,10 @@ fn full_output_format() {
    success: false
    exit_code: 1
    ----- stdout -----
-    E741 Ambiguous variable name: `l`
-     --> -:1:1
+    -:1:1: E741 Ambiguous variable name: `l`
      |
    1 | l = 1
-      | ^
+      | ^ E741
      |

    Found 1 error.
@@ -1424,9 +1406,7 @@ fn redirect_direct() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF950 Hey this is a test rule that was redirected from another.
-    --> -:1:1
-
+    -:1:1: RUF950 Hey this is a test rule that was redirected from another.
    Found 1 error.

    ----- stderr -----
@@ -1458,9 +1438,7 @@ fn redirect_prefix() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF950 Hey this is a test rule that was redirected from another.
-    --> -:1:1
-
+    -:1:1: RUF950 Hey this is a test rule that was redirected from another.
    Found 1 error.

    ----- stderr -----
@@ -1477,9 +1455,7 @@ fn deprecated_direct() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
+    -:1:1: RUF920 Hey this is a deprecated test rule.
    Found 1 error.

    ----- stderr -----
@@ -1496,12 +1472,8 @@ fn deprecated_multiple_direct() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
-    RUF921 Hey this is another deprecated test rule.
-    --> -:1:1
-
+    -:1:1: RUF920 Hey this is a deprecated test rule.
+    -:1:1: RUF921 Hey this is another deprecated test rule.
    Found 2 errors.

    ----- stderr -----
@@ -1519,12 +1491,8 @@ fn deprecated_indirect() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
-    RUF921 Hey this is another deprecated test rule.
-    --> -:1:1
-
+    -:1:1: RUF920 Hey this is a deprecated test rule.
+    -:1:1: RUF921 Hey this is another deprecated test rule.
    Found 2 errors.

    ----- stderr -----
@@ -1670,23 +1638,22 @@ 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(""), @r###"
        success: false
        exit_code: 1
        ----- stdout -----
-        F401 [*] `os` imported but unused
-         --> /path/to/a.py:1:8
+        /path/to/a.py:1:8: F401 [*] `os` imported but unused
          |
        1 | import os
-          |        ^^
+          |        ^^ F401
          |
-        help: Remove unused import: `os`
+          = help: Remove unused import: `os`

        Found 1 error.
        [*] 1 fixable with the `--fix` option.

        ----- stderr -----
-        ");
+        "###);
    });

    Ok(())
@@ -1702,12 +1669,8 @@ fn check_hints_hidden_unsafe_fixes() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 [*] Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).

@@ -1724,9 +1687,7 @@ fn check_hints_hidden_unsafe_fixes_with_no_safe_fixes() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 1 error.
    No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).

@@ -1744,12 +1705,8 @@ fn check_no_hint_for_hidden_unsafe_fixes_when_disabled() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 [*] Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    [*] 1 fixable with the --fix option.

@@ -1768,9 +1725,7 @@ fn check_no_hint_for_hidden_unsafe_fixes_with_no_safe_fixes_when_disabled() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 1 error.

    ----- stderr -----
@@ -1787,12 +1742,8 @@ fn check_shows_unsafe_fixes_with_opt_in() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 [*] Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 [*] Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 [*] Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    [*] 2 fixable with the --fix option.

@@ -1813,9 +1764,7 @@ fn fix_applies_safe_fixes_by_default() {
    # fix from stable-test-rule-safe-fix

    ----- stderr -----
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 2 errors (1 fixed, 1 remaining).
    No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).
    ");
@@ -1852,9 +1801,7 @@ fn fix_does_not_apply_display_only_fixes() {
    ----- stdout -----
    def add_to_list(item, some_list=[]): ...
    ----- stderr -----
-    RUF903 Hey this is a stable test rule with a display only fix.
-    --> -:1:1
-
+    -:1:1: RUF903 Hey this is a stable test rule with a display only fix.
    Found 1 error.
    ");
 }
@@ -1872,9 +1819,7 @@ fn fix_does_not_apply_display_only_fixes_with_unsafe_fixes_enabled() {
    ----- stdout -----
    def add_to_list(item, some_list=[]): ...
    ----- stderr -----
-    RUF903 Hey this is a stable test rule with a display only fix.
-    --> -:1:1
-
+    -:1:1: RUF903 Hey this is a stable test rule with a display only fix.
    Found 1 error.
    ");
 }
@@ -1891,9 +1836,7 @@ fn fix_only_unsafe_fixes_available() {
    ----- stdout -----

    ----- stderr -----
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 1 error.
    No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).
    ");
@@ -2029,12 +1972,8 @@ extend-unsafe-fixes = ["RUF901"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    No fixes available (2 hidden fixes can be enabled with the `--unsafe-fixes` option).

@@ -2065,12 +2004,8 @@ extend-safe-fixes = ["RUF902"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 [*] Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 [*] Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 [*] Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    [*] 2 fixable with the `--fix` option.

@@ -2103,12 +2038,8 @@ extend-safe-fixes = ["RUF902"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF901 [*] Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
+    -:1:1: RUF901 [*] Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 Hey this is a stable test rule with an unsafe fix.
    Found 2 errors.
    [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).

@@ -2143,27 +2074,13 @@ extend-safe-fixes = ["RUF9"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF900 Hey this is a stable test rule.
-    --> -:1:1
-
-    RUF901 Hey this is a stable test rule with a safe fix.
-    --> -:1:1
-
-    RUF902 [*] Hey this is a stable test rule with an unsafe fix.
-    --> -:1:1
-
-    RUF903 Hey this is a stable test rule with a display only fix.
-    --> -:1:1
-
-    RUF920 Hey this is a deprecated test rule.
-    --> -:1:1
-
-    RUF921 Hey this is another deprecated test rule.
-    --> -:1:1
-
-    RUF950 Hey this is a test rule that was redirected from another.
-    --> -:1:1
-
+    -:1:1: RUF900 Hey this is a stable test rule.
+    -:1:1: RUF901 Hey this is a stable test rule with a safe fix.
+    -:1:1: RUF902 [*] Hey this is a stable test rule with an unsafe fix.
+    -:1:1: RUF903 Hey this is a stable test rule with a display only fix.
+    -:1:1: RUF920 Hey this is a deprecated test rule.
+    -:1:1: RUF921 Hey this is another deprecated test rule.
+    -:1:1: RUF950 Hey this is a test rule that was redirected from another.
    Found 7 errors.
    [*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).

@@ -2224,11 +2141,10 @@ def log(x, base) -> float:
    success: false
    exit_code: 1
    ----- stdout -----
-    D417 Missing argument description in the docstring for `log`: `base`
-     --> -:2:5
+    -:2:5: D417 Missing argument description in the docstring for `log`: `base`
      |
    2 | def log(x, base) -> float:
-      |     ^^^
+      |     ^^^ D417
    3 |     """Calculate natural log of a value
      |

@@ -2261,15 +2177,14 @@ select = ["RUF017"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF017 Avoid quadratic list summation
-     --> -:3:1
+    -:3:1: RUF017 Avoid quadratic list summation
      |
    1 | x = [1, 2, 3]
    2 | y = [4, 5, 6]
    3 | sum([x, y], [])
-      | ^^^^^^^^^^^^^^^
+      | ^^^^^^^^^^^^^^^ RUF017
      |
-    help: Replace with `functools.reduce`
+      = help: Replace with `functools.reduce`

    Found 1 error.
    No fixes available (1 hidden fix can be enabled with the `--unsafe-fixes` option).
@@ -2302,15 +2217,14 @@ unfixable = ["RUF"]
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF017 Avoid quadratic list summation
-     --> -:3:1
+    -:3:1: RUF017 Avoid quadratic list summation
      |
    1 | x = [1, 2, 3]
    2 | y = [4, 5, 6]
    3 | sum([x, y], [])
-      | ^^^^^^^^^^^^^^^
+      | ^^^^^^^^^^^^^^^ RUF017
      |
-    help: Replace with `functools.reduce`
+      = help: Replace with `functools.reduce`

    Found 1 error.

@@ -2332,11 +2246,10 @@ fn pyproject_toml_stdin_syntax_error() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF200 Failed to parse pyproject.toml: unclosed table, expected `]`
-     --> pyproject.toml:1:9
+    pyproject.toml:1:9: RUF200 Failed to parse pyproject.toml: unclosed table, expected `]`
      |
    1 | [project
-      |         ^
+      |         ^ RUF200
      |

    Found 1 error.
@@ -2358,12 +2271,11 @@ fn pyproject_toml_stdin_schema_error() {
    success: false
    exit_code: 1
    ----- stdout -----
-    RUF200 Failed to parse pyproject.toml: invalid type: integer `1`, expected a string
-     --> pyproject.toml:2:8
+    pyproject.toml:2:8: RUF200 Failed to parse pyproject.toml: invalid type: integer `1`, expected a string
      |
    1 | [project]
    2 | name = 1
-      |        ^
+      |        ^ RUF200
      |

    Found 1 error.
@@ -2451,12 +2363,11 @@ fn pyproject_toml_stdin_schema_error_fix() {
    [project]
    name = 1
    ----- stderr -----
-    RUF200 Failed to parse pyproject.toml: invalid type: integer `1`, expected a string
-     --> pyproject.toml:2:8
+    pyproject.toml:2:8: RUF200 Failed to parse pyproject.toml: invalid type: integer `1`, expected a string
      |
    1 | [project]
    2 | name = 1
-      |        ^
+      |        ^ RUF200
      |

    Found 1 error.
--- a/crates/ruff/tests/lint.rs
+++ b/crates/ruff/tests/lint.rs
@@ -5588,15 +5588,15 @@ fn cookiecutter_globbing() -> Result<()> {
                .args(STDIN_BASE_OPTIONS)
                .arg("--select=F811")
                .current_dir(tempdir.path()), @r"
-        success: false
-        exit_code: 1
-        ----- stdout -----
-        {{cookiecutter.repo_name}}/tests/maintest.py:3:8: F811 [*] Redefinition of unused `foo` from line 1: `foo` redefined here
-        Found 1 error.
-        [*] 1 fixable with the `--fix` option.
+			success: false
+			exit_code: 1
+			----- stdout -----
+			{{cookiecutter.repo_name}}/tests/maintest.py:3:8: F811 [*] Redefinition of unused `foo` from line 1
+			Found 1 error.
+			[*] 1 fixable with the `--fix` option.

-        ----- stderr -----
-        ");
+			----- stderr -----
+		");
    });

    Ok(())
@@ -5801,62 +5801,3 @@ fn future_annotations_preview_warning() {
    ",
    );
 }
-
-#[test]
-fn up045_nested_optional_flatten_all() {
-    let contents = "\
-from typing import Optional
-nested_optional: Optional[Optional[Optional[str]]] = None
-";
-
-    assert_cmd_snapshot!(
-        Command::new(get_cargo_bin(BIN_NAME))
-            .args(STDIN_BASE_OPTIONS)
-            .args(["--select", "UP045", "--diff", "--target-version", "py312"])
-            .arg("-")
-            .pass_stdin(contents),
-        @r"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    @@ -1,2 +1,2 @@
-     from typing import Optional
-    -nested_optional: Optional[Optional[Optional[str]]] = None
-    +nested_optional: str | None = None
-
-
-    ----- stderr -----
-    Would fix 1 error.
-    ",
-    );
-}
-
-#[test]
-fn show_fixes_in_full_output_with_preview_enabled() {
-    assert_cmd_snapshot!(
-        Command::new(get_cargo_bin(BIN_NAME))
-            .args(["check", "--no-cache", "--output-format", "full"])
-            .args(["--select", "F401"])
-            .arg("--preview")
-            .arg("-")
-            .pass_stdin("import math"),
-        @r"
-    success: false
-    exit_code: 1
-    ----- stdout -----
-    F401 [*] `math` imported but unused
-     --> -:1:8
-      |
-    1 | import math
-      |        ^^^^
-      |
-    help: Remove unused import: `math`
-      - import math
-
-    Found 1 error.
-    [*] 1 fixable with the `--fix` option.
-
-    ----- stderr -----
-    ",
-    );
-}
--- a/crates/ruff/tests/snapshots/lint__output_format_full.snap
+++ b/crates/ruff/tests/snapshots/lint__output_format_full.snap
@@ -16,28 +16,25 @@ info:
 success: false
 exit_code: 1
 ----- stdout -----
-F401 [*] `os` imported but unused
- --> input.py:1:8
+input.py:1:8: F401 [*] `os` imported but unused
  |
 1 | import os  # F401
-  |        ^^
+  |        ^^ F401
 2 | x = y      # F821
 3 | match 42:  # invalid-syntax
  |
-help: Remove unused import: `os`
+  = help: Remove unused import: `os`

-F821 Undefined name `y`
- --> input.py:2:5
+input.py:2:5: F821 Undefined name `y`
  |
 1 | import os  # F401
 2 | x = y      # F821
-  |     ^
+  |     ^ F821
 3 | match 42:  # invalid-syntax
 4 |     case _: ...
  |

-invalid-syntax: Cannot use `match` statement on Python 3.9 (syntax was added in Python 3.10)
- --> input.py:3:1
+input.py:3:1: invalid-syntax: Cannot use `match` statement on Python 3.9 (syntax was added in Python 3.10)
  |
 1 | import os  # F401
 2 | x = y      # F821
--- a/crates/ruff/tests/snapshots/lint__output_format_gitlab.snap
+++ b/crates/ruff/tests/snapshots/lint__output_format_gitlab.snap
@@ -19,60 +19,60 @@ exit_code: 1
 [
  {
    "check_name": "F401",
-    "description": "F401: `os` imported but unused",
-    "severity": "major",
+    "description": "`os` imported but unused",
    "fingerprint": "4dbad37161e65c72",
    "location": {
      "path": "input.py",
      "positions": {
        "begin": {
-          "line": 1,
-          "column": 8
+          "column": 8,
+          "line": 1
        },
        "end": {
-          "line": 1,
-          "column": 10
+          "column": 10,
+          "line": 1
        }
      }
-    }
+    },
+    "severity": "major"
  },
  {
    "check_name": "F821",
-    "description": "F821: Undefined name `y`",
-    "severity": "major",
+    "description": "Undefined name `y`",
    "fingerprint": "7af59862a085230",
    "location": {
      "path": "input.py",
      "positions": {
        "begin": {
-          "line": 2,
-          "column": 5
+          "column": 5,
+          "line": 2
        },
        "end": {
-          "line": 2,
-          "column": 6
+          "column": 6,
+          "line": 2
        }
      }
-    }
+    },
+    "severity": "major"
  },
  {
-    "check_name": "invalid-syntax",
-    "description": "invalid-syntax: Cannot use `match` statement on Python 3.9 (syntax was added in Python 3.10)",
-    "severity": "major",
+    "check_name": "syntax-error",
+    "description": "Cannot use `match` statement on Python 3.9 (syntax was added in Python 3.10)",
    "fingerprint": "e558cec859bb66e8",
    "location": {
      "path": "input.py",
      "positions": {
        "begin": {
-          "line": 3,
-          "column": 1
+          "column": 1,
+          "line": 3
        },
        "end": {
-          "line": 3,
-          "column": 6
+          "column": 6,
+          "line": 3
        }
      }
-    }
+    },
+    "severity": "major"
  }
 ]
 ----- stderr -----
--- a/crates/ruff_annotate_snippets/src/renderer/display_list.rs
+++ b/crates/ruff_annotate_snippets/src/renderer/display_list.rs
@@ -1201,16 +1201,11 @@ fn format_snippet<'m>(

    let is_file_level = snippet.annotations.iter().any(|ann| ann.is_file_level);
    if is_file_level {
-        // TODO(brent) enable this assertion again once we set `is_file_level` for individual rules.
-        // It's causing too many false positives currently when the default is to make any
-        // annotation with a default range file-level. See
-        // https://github.com/astral-sh/ruff/issues/19688.
-        //
-        // assert!(
-        //     snippet.source.is_empty(),
-        //     "Non-empty file-level snippet that won't be rendered: {:?}",
-        //     snippet.source
-        // );
+        assert!(
+            snippet.source.is_empty(),
+            "Non-empty file-level snippet that won't be rendered: {:?}",
+            snippet.source
+        );
        let header = format_header(origin, main_range, &[], is_first, snippet.cell_index);
        return DisplaySet {
            display_lines: header.map_or_else(Vec::new, |header| vec![header]),
@@ -1278,20 +1273,13 @@ fn format_header<'a>(
                ..
            } = item
            {
-                // At the very end of the `main_range`, report the location as the first character
-                // in the next line instead of falling back to the default location of `1:1`. This
-                // is another divergence from upstream.
-                let end_of_range = range.1 + max(*end_line as usize, 1);
-                if main_range >= range.0 && main_range < end_of_range {
+                if main_range >= range.0 && main_range < range.1 + max(*end_line as usize, 1) {
                    let char_column = text[0..(main_range - range.0).min(text.len())]
                        .chars()
                        .count();
                    col = char_column + 1;
                    line_offset = lineno.unwrap_or(1);
                    break;
-                } else if main_range == end_of_range {
-                    line_offset = lineno.map_or(1, |line| line + 1);
-                    break;
                }
            }
        }
--- a/crates/ruff_benchmark/Cargo.toml
+++ b/crates/ruff_benchmark/Cargo.toml
@@ -86,5 +86,5 @@ walltime = ["ruff_db/os", "ty_project", "divan"]
 [target.'cfg(target_os = "windows")'.dev-dependencies]
 mimalloc = { workspace = true }

-[target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64", target_arch = "riscv64")))'.dev-dependencies]
+[target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dev-dependencies]
 tikv-jemallocator = { workspace = true }
--- a/crates/ruff_benchmark/benches/formatter.rs
+++ b/crates/ruff_benchmark/benches/formatter.rs
@@ -21,8 +21,7 @@ static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[global_allocator]
--- a/crates/ruff_benchmark/benches/lexer.rs
+++ b/crates/ruff_benchmark/benches/lexer.rs
@@ -18,8 +18,7 @@ static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[global_allocator]
--- a/crates/ruff_benchmark/benches/linter.rs
+++ b/crates/ruff_benchmark/benches/linter.rs
@@ -26,8 +26,7 @@ static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[global_allocator]
@@ -43,8 +42,7 @@ static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[unsafe(export_name = "_rjem_malloc_conf")]
@@ -79,11 +77,8 @@ fn benchmark_linter(mut group: BenchmarkGroup, settings: &LinterSettings) {
                b.iter_batched(
                    || parsed.clone(),
                    |parsed| {
-                        // Assert that file contains no parse errors
-                        assert!(parsed.has_valid_syntax());
-
                        let path = case.path();
-                        lint_only(
+                        let result = lint_only(
                            &path,
                            None,
                            settings,
@@ -91,7 +86,10 @@ fn benchmark_linter(mut group: BenchmarkGroup, settings: &LinterSettings) {
                            &SourceKind::Python(case.code().to_string()),
                            PySourceType::from(path.as_path()),
                            ParseSource::Precomputed(parsed),
-                        )
+                        );
+
+                        // Assert that file contains no parse errors
+                        assert!(!result.has_syntax_errors());
                    },
                    criterion::BatchSize::SmallInput,
                );
--- a/crates/ruff_benchmark/benches/parser.rs
+++ b/crates/ruff_benchmark/benches/parser.rs
@@ -20,8 +20,7 @@ static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
    any(
        target_arch = "x86_64",
        target_arch = "aarch64",
-        target_arch = "powerpc64",
-        target_arch = "riscv64"
+        target_arch = "powerpc64"
    )
 ))]
 #[global_allocator]
--- a/crates/ruff_benchmark/benches/ty.rs
+++ b/crates/ruff_benchmark/benches/ty.rs
@@ -450,6 +450,9 @@ fn benchmark_complex_constrained_attributes_2(criterion: &mut Criterion) {
                    r#"
                    class C:
                        def f(self: "C"):
+                            self.a = ""
+                            self.b = ""
+
                            if isinstance(self.a, str):
                                return

@@ -463,56 +466,6 @@ fn benchmark_complex_constrained_attributes_2(criterion: &mut Criterion) {
                                return
                            if isinstance(self.b, str):
                                return
-                            if isinstance(self.b, str):
-                                return
-                            if isinstance(self.b, str):
-                                return
-
-                            self.a = ""
-                            self.b = ""
-                    "#,
-                )
-            },
-            |case| {
-                let Case { db, .. } = case;
-                let result = db.check();
-                assert_eq!(result.len(), 0);
-            },
-            BatchSize::SmallInput,
-        );
-    });
-}
-
-fn benchmark_complex_constrained_attributes_3(criterion: &mut Criterion) {
-    setup_rayon();
-
-    criterion.bench_function("ty_micro[complex_constrained_attributes_3]", |b| {
-        b.iter_batched_ref(
-            || {
-                // This is a regression test for https://github.com/astral-sh/ty/issues/758
-                setup_micro_case(
-                    r#"
-                    class GridOut:
-                        def __init__(self: "GridOut") -> None:
-                            self._buffer = b""
-
-                        def _read_size_or_line(self: "GridOut", size: int = -1):
-                            if size > self._position:
-                                size = self._position
-                                pass
-                            if size == 0:
-                                return bytes()
-
-                            while size > 0:
-                                if self._buffer:
-                                    buf = self._buffer
-                                    self._buffer = b""
-                                else:
-                                    buf = b""
-
-                                if len(buf) > size:
-                                    self._buffer = buf
-                                    self._position -= len(self._buffer)
                    "#,
                )
            },
@@ -715,7 +668,6 @@ criterion_group!(
    benchmark_tuple_implicit_instance_attributes,
    benchmark_complex_constrained_attributes_1,
    benchmark_complex_constrained_attributes_2,
-    benchmark_complex_constrained_attributes_3,
    benchmark_many_enum_members,
 );
 criterion_group!(project, anyio, attrs, hydra, datetype);
--- a/crates/ruff_benchmark/benches/ty_walltime.rs
+++ b/crates/ruff_benchmark/benches/ty_walltime.rs
@@ -218,24 +218,6 @@ static TANJUN: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::ne
    )
 });

-static STATIC_FRAME: std::sync::LazyLock<Benchmark<'static>> = std::sync::LazyLock::new(|| {
-    Benchmark::new(
-        RealWorldProject {
-            name: "static-frame",
-            repository: "https://github.com/static-frame/static-frame",
-            commit: "34962b41baca5e7f98f5a758d530bff02748a421",
-            paths: vec![SystemPath::new("static_frame")],
-            // N.B. `arraykit` is installed as a dependency during mypy_primer runs,
-            // but it takes much longer to be installed in a Codspeed run than it does in a mypy_primer run
-            // (seems to be built from source on the Codspeed CI runners for some reason).
-            dependencies: vec!["numpy"],
-            max_dep_date: "2025-08-09",
-            python_version: PythonVersion::PY311,
-        },
-        500,
-    )
-});
-
 #[track_caller]
 fn run_single_threaded(bencher: Bencher, benchmark: &Benchmark) {
    bencher
@@ -250,7 +232,7 @@ fn small(bencher: Bencher, benchmark: &Benchmark) {
    run_single_threaded(bencher, benchmark);
 }

-#[bench(args=[&*COLOUR_SCIENCE, &*PANDAS, &*STATIC_FRAME], sample_size=1, sample_count=3)]
+#[bench(args=[&*COLOUR_SCIENCE, &*PANDAS], sample_size=1, sample_count=3)]
 fn medium(bencher: Bencher, benchmark: &Benchmark) {
    run_single_threaded(bencher, benchmark);
 }
--- a/crates/ruff_db/Cargo.toml
+++ b/crates/ruff_db/Cargo.toml
@@ -34,14 +34,12 @@ glob = { workspace = true }
 ignore = { workspace = true, optional = true }
 matchit = { workspace = true }
 path-slash = { workspace = true }
-pathdiff = { workspace = true }
 quick-junit = { workspace = true, optional = true }
 rustc-hash = { workspace = true }
 salsa = { workspace = true }
 schemars = { workspace = true, optional = true }
 serde = { workspace = true, optional = true }
 serde_json = { workspace = true, optional = true }
-similar = { workspace = true }
 thiserror = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true, optional = true }
@@ -54,7 +52,7 @@ web-time = { version = "1.1.0" }
 etcetera = { workspace = true, optional = true }

 [dev-dependencies]
-insta = { workspace = true, features = ["filters"] }
+insta = { workspace = true }
 tempfile = { workspace = true }

 [features]
--- a/crates/ruff_db/src/diagnostic/mod.rs
+++ b/crates/ruff_db/src/diagnostic/mod.rs
@@ -254,11 +254,6 @@ impl Diagnostic {
            .find(|ann| ann.is_primary)
    }

-    /// Returns a mutable borrow of all annotations of this diagnostic.
-    pub fn annotations_mut(&mut self) -> impl Iterator<Item = &mut Annotation> {
-        Arc::make_mut(&mut self.inner).annotations.iter_mut()
-    }
-
    /// Returns the "primary" span of this diagnostic if one exists.
    ///
    /// When there are multiple primary spans, then the first one that was
@@ -315,21 +310,11 @@ impl Diagnostic {
        &self.inner.subs
    }

-    /// Returns a mutable borrow of the sub-diagnostics of this diagnostic.
-    pub fn sub_diagnostics_mut(&mut self) -> impl Iterator<Item = &mut SubDiagnostic> {
-        Arc::make_mut(&mut self.inner).subs.iter_mut()
-    }
-
    /// Returns the fix for this diagnostic if it exists.
    pub fn fix(&self) -> Option<&Fix> {
        self.inner.fix.as_ref()
    }

-    #[cfg(test)]
-    pub(crate) fn fix_mut(&mut self) -> Option<&mut Fix> {
-        Arc::make_mut(&mut self.inner).fix.as_mut()
-    }
-
    /// Set the fix for this diagnostic.
    pub fn set_fix(&mut self, fix: Fix) {
        debug_assert!(
@@ -349,13 +334,6 @@ impl Diagnostic {
        self.fix().is_some()
    }

-    /// Returns `true` if the diagnostic is [`fixable`](Diagnostic::fixable) and applies at the
-    /// configured applicability level.
-    pub fn has_applicable_fix(&self, config: &DisplayDiagnosticConfig) -> bool {
-        self.fix()
-            .is_some_and(|fix| fix.applies(config.fix_applicability))
-    }
-
    /// Returns the offset of the parent statement for this diagnostic if it exists.
    ///
    /// This is primarily used for checking noqa/secondary code suppressions.
@@ -643,11 +621,6 @@ impl SubDiagnostic {
        &self.inner.annotations
    }

-    /// Returns a mutable borrow of the annotations of this sub-diagnostic.
-    pub fn annotations_mut(&mut self) -> impl Iterator<Item = &mut Annotation> {
-        self.inner.annotations.iter_mut()
-    }
-
    /// Returns a shared borrow of the "primary" annotation of this diagnostic
    /// if one exists.
    ///
@@ -1306,10 +1279,6 @@ pub struct DisplayDiagnosticConfig {
    hide_severity: bool,
    /// Whether to show the availability of a fix in a diagnostic.
    show_fix_status: bool,
-    /// Whether to show the diff for an available fix after the main diagnostic.
-    ///
-    /// This currently only applies to `DiagnosticFormat::Full`.
-    show_fix_diff: bool,
    /// The lowest applicability that should be shown when reporting diagnostics.
    fix_applicability: Applicability,
 }
@@ -1357,14 +1326,6 @@ impl DisplayDiagnosticConfig {
        }
    }

-    /// Whether to show a diff for an available fix after the main diagnostic.
-    pub fn show_fix_diff(self, yes: bool) -> DisplayDiagnosticConfig {
-        DisplayDiagnosticConfig {
-            show_fix_diff: yes,
-            ..self
-        }
-    }
-
    /// Set the lowest fix applicability that should be shown.
    ///
    /// In other words, an applicability of `Safe` (the default) would suppress showing fixes or fix
@@ -1388,7 +1349,6 @@ impl Default for DisplayDiagnosticConfig {
            preview: false,
            hide_severity: false,
            show_fix_status: false,
-            show_fix_diff: false,
            fix_applicability: Applicability::Safe,
        }
    }
@@ -1442,11 +1402,6 @@ pub enum DiagnosticFormat {
    /// Print diagnostics in the format expected by JUnit.
    #[cfg(feature = "junit")]
    Junit,
-    /// Print diagnostics in the JSON format used by GitLab [Code Quality] reports.
-    ///
-    /// [Code Quality]: https://docs.gitlab.com/ci/testing/code_quality/#code-quality-report-format
-    #[cfg(feature = "serde")]
-    Gitlab,
 }

 /// A representation of the kinds of messages inside a diagnostic.
--- a/crates/ruff_db/src/diagnostic/render.rs
+++ b/crates/ruff_db/src/diagnostic/render.rs
@@ -2,15 +2,15 @@ use std::borrow::Cow;
 use std::collections::BTreeMap;
 use std::path::Path;

-use full::FullRenderer;
 use ruff_annotate_snippets::{
    Annotation as AnnotateAnnotation, Level as AnnotateLevel, Message as AnnotateMessage,
-    Snippet as AnnotateSnippet,
+    Renderer as AnnotateRenderer, Snippet as AnnotateSnippet,
 };
 use ruff_notebook::{Notebook, NotebookIndex};
 use ruff_source_file::{LineIndex, OneIndexed, SourceCode};
 use ruff_text_size::{TextLen, TextRange, TextSize};

+use crate::diagnostic::stylesheet::DiagnosticStylesheet;
 use crate::{
    Db,
    files::File,
@@ -31,8 +31,6 @@ mod azure;
 mod concise;
 mod full;
 #[cfg(feature = "serde")]
-mod gitlab;
-#[cfg(feature = "serde")]
 mod json;
 #[cfg(feature = "serde")]
 mod json_lines;
@@ -113,7 +111,37 @@ impl std::fmt::Display for DisplayDiagnostics<'_> {
                ConciseRenderer::new(self.resolver, self.config).render(f, self.diagnostics)?;
            }
            DiagnosticFormat::Full => {
-                FullRenderer::new(self.resolver, self.config).render(f, self.diagnostics)?;
+                let stylesheet = if self.config.color {
+                    DiagnosticStylesheet::styled()
+                } else {
+                    DiagnosticStylesheet::plain()
+                };
+
+                let mut renderer = if self.config.color {
+                    AnnotateRenderer::styled()
+                } else {
+                    AnnotateRenderer::plain()
+                }
+                .cut_indicator("…");
+
+                renderer = renderer
+                    .error(stylesheet.error)
+                    .warning(stylesheet.warning)
+                    .info(stylesheet.info)
+                    .note(stylesheet.note)
+                    .help(stylesheet.help)
+                    .line_no(stylesheet.line_no)
+                    .emphasis(stylesheet.emphasis)
+                    .none(stylesheet.none);
+
+                for diag in self.diagnostics {
+                    let resolved = Resolved::new(self.resolver, diag, self.config);
+                    let renderable = resolved.to_renderable(self.config.context);
+                    for diag in renderable.diagnostics.iter() {
+                        writeln!(f, "{}", renderer.render(diag.to_annotate()))?;
+                    }
+                    writeln!(f)?;
+                }
            }
            DiagnosticFormat::Azure => {
                AzureRenderer::new(self.resolver).render(f, self.diagnostics)?;
@@ -138,10 +166,6 @@ impl std::fmt::Display for DisplayDiagnostics<'_> {
            DiagnosticFormat::Junit => {
                junit::JunitRenderer::new(self.resolver).render(f, self.diagnostics)?;
            }
-            #[cfg(feature = "serde")]
-            DiagnosticFormat::Gitlab => {
-                gitlab::GitlabRenderer::new(self.resolver).render(f, self.diagnostics)?;
-            }
        }

        Ok(())
@@ -218,12 +242,7 @@ impl<'a> ResolvedDiagnostic<'a> {
            .annotations
            .iter()
            .filter_map(|ann| {
-                let path = ann
-                    .span
-                    .file
-                    .relative_path(resolver)
-                    .to_str()
-                    .unwrap_or_else(|| ann.span.file.path(resolver));
+                let path = ann.span.file.path(resolver);
                let diagnostic_source = ann.span.file.diagnostic_source(resolver);
                ResolvedAnnotation::new(path, &diagnostic_source, ann, resolver)
            })
@@ -254,7 +273,9 @@ impl<'a> ResolvedDiagnostic<'a> {
            id,
            message: diag.inner.message.as_str().to_string(),
            annotations,
-            is_fixable: diag.has_applicable_fix(config),
+            is_fixable: diag
+                .fix()
+                .is_some_and(|fix| fix.applies(config.fix_applicability)),
        }
    }

@@ -268,12 +289,7 @@ impl<'a> ResolvedDiagnostic<'a> {
            .annotations
            .iter()
            .filter_map(|ann| {
-                let path = ann
-                    .span
-                    .file
-                    .relative_path(resolver)
-                    .to_str()
-                    .unwrap_or_else(|| ann.span.file.path(resolver));
+                let path = ann.span.file.path(resolver);
                let diagnostic_source = ann.span.file.diagnostic_source(resolver);
                ResolvedAnnotation::new(path, &diagnostic_source, ann, resolver)
            })
@@ -639,22 +655,6 @@ impl<'r> RenderableSnippet<'r> {
            .as_source_code()
            .slice(TextRange::new(snippet_start, snippet_end));

-        // Strip the BOM from the beginning of the snippet, if present. Doing this here saves us the
-        // trouble of updating the annotation ranges in `replace_unprintable`, and also allows us to
-        // check that the BOM is at the very beginning of the file, not just the beginning of the
-        // snippet.
-        const BOM: char = '\u{feff}';
-        let bom_len = BOM.text_len();
-        let (snippet, snippet_start) =
-            if snippet_start == TextSize::ZERO && snippet.starts_with(BOM) {
-                (
-                    &snippet[bom_len.to_usize()..],
-                    snippet_start + TextSize::new(bom_len.to_u32()),
-                )
-            } else {
-                (snippet, snippet_start)
-            };
-
        let annotations = anns
            .iter()
            .map(|ann| RenderableAnnotation::new(snippet_start, ann))
@@ -719,11 +719,7 @@ impl<'r> RenderableAnnotation<'r> {
    /// lifetime parameter here refers to the lifetime of the resolver that
    /// created the given `ResolvedAnnotation`.
    fn new(snippet_start: TextSize, ann: &'_ ResolvedAnnotation<'r>) -> RenderableAnnotation<'r> {
-        // This should only ever saturate if a BOM is present _and_ the annotation range points
-        // before the BOM (i.e. at offset 0). In Ruff this typically results from the use of
-        // `TextRange::default()` for a diagnostic range instead of a range relative to file
-        // contents.
-        let range = ann.range.checked_sub(snippet_start).unwrap_or(ann.range);
+        let range = ann.range - snippet_start;
        RenderableAnnotation {
            range,
            message: ann.message,
@@ -1004,12 +1000,7 @@ fn replace_unprintable<'r>(
    let mut last_end = 0;
    let mut result = String::new();
    for (index, c) in source.char_indices() {
-        // normalize `\r` line endings but don't double `\r\n`
-        if c == '\r' && !source[index + 1..].starts_with("\n") {
-            result.push_str(&source[last_end..index]);
-            result.push('\n');
-            last_end = index + 1;
-        } else if let Some(printable) = unprintable_replacement(c) {
+        if let Some(printable) = unprintable_replacement(c) {
            result.push_str(&source[last_end..index]);

            let len = printable.text_len().to_u32();
@@ -2626,13 +2617,6 @@ watermelon
            self.config = config;
        }

-        /// Show a diff for the fix when rendering.
-        pub(super) fn show_fix_diff(&mut self, yes: bool) {
-            let mut config = std::mem::take(&mut self.config);
-            config = config.show_fix_diff(yes);
-            self.config = config;
-        }
-
        /// The lowest fix applicability to show when rendering.
        pub(super) fn fix_applicability(&mut self, applicability: Applicability) {
            let mut config = std::mem::take(&mut self.config);
--- a/crates/ruff_db/src/diagnostic/render/concise.rs
+++ b/crates/ruff_db/src/diagnostic/render/concise.rs
@@ -77,9 +77,11 @@ impl<'a> ConciseRenderer<'a> {
                    )?;
                }
                if self.config.show_fix_status {
-                    // Do not display an indicator for inapplicable fixes
-                    if diag.has_applicable_fix(self.config) {
-                        write!(f, "[{fix}] ", fix = fmt_styled("*", stylesheet.separator))?;
+                    if let Some(fix) = diag.fix() {
+                        // Do not display an indicator for inapplicable fixes
+                        if fix.applies(self.config.fix_applicability) {
+                            write!(f, "[{fix}] ", fix = fmt_styled("*", stylesheet.separator))?;
+                        }
                    }
                }
            } else {
--- a/crates/ruff_db/src/diagnostic/render/full.rs
+++ b/crates/ruff_db/src/diagnostic/render/full.rs
@@ -1,298 +1,7 @@
-use std::borrow::Cow;
-use std::num::NonZeroUsize;
-
-use similar::{ChangeTag, TextDiff};
-
-use ruff_annotate_snippets::Renderer as AnnotateRenderer;
-use ruff_diagnostics::{Applicability, Fix};
-use ruff_notebook::NotebookIndex;
-use ruff_source_file::OneIndexed;
-use ruff_text_size::{Ranged, TextLen, TextRange, TextSize};
-
-use crate::diagnostic::render::{FileResolver, Resolved};
-use crate::diagnostic::stylesheet::{DiagnosticStylesheet, fmt_styled};
-use crate::diagnostic::{Diagnostic, DiagnosticSource, DisplayDiagnosticConfig};
-
-pub(super) struct FullRenderer<'a> {
-    resolver: &'a dyn FileResolver,
-    config: &'a DisplayDiagnosticConfig,
-}
-
-impl<'a> FullRenderer<'a> {
-    pub(super) fn new(resolver: &'a dyn FileResolver, config: &'a DisplayDiagnosticConfig) -> Self {
-        Self { resolver, config }
-    }
-
-    pub(super) fn render(
-        &self,
-        f: &mut std::fmt::Formatter,
-        diagnostics: &[Diagnostic],
-    ) -> std::fmt::Result {
-        let stylesheet = if self.config.color {
-            DiagnosticStylesheet::styled()
-        } else {
-            DiagnosticStylesheet::plain()
-        };
-
-        let mut renderer = if self.config.color {
-            AnnotateRenderer::styled()
-        } else {
-            AnnotateRenderer::plain()
-        }
-        .cut_indicator("…");
-
-        renderer = renderer
-            .error(stylesheet.error)
-            .warning(stylesheet.warning)
-            .info(stylesheet.info)
-            .note(stylesheet.note)
-            .help(stylesheet.help)
-            .line_no(stylesheet.line_no)
-            .emphasis(stylesheet.emphasis)
-            .none(stylesheet.none);
-
-        for diag in diagnostics {
-            let resolved = Resolved::new(self.resolver, diag, self.config);
-            let renderable = resolved.to_renderable(self.config.context);
-            for diag in renderable.diagnostics.iter() {
-                writeln!(f, "{}", renderer.render(diag.to_annotate()))?;
-            }
-
-            if self.config.show_fix_diff && diag.has_applicable_fix(self.config) {
-                if let Some(diff) = Diff::from_diagnostic(diag, &stylesheet, self.resolver) {
-                    write!(f, "{diff}")?;
-                }
-            }
-
-            writeln!(f)?;
-        }
-
-        Ok(())
-    }
-}
-
-/// Renders a diff that shows the code fixes.
-///
-/// The implementation isn't fully fledged out and only used by tests. Before using in production, try
-/// * Improve layout
-/// * Replace tabs with spaces for a consistent experience across terminals
-/// * Replace zero-width whitespaces
-/// * Print a simpler diff if only a single line has changed
-/// * Compute the diff from the `Edit` because diff calculation is expensive.
-struct Diff<'a> {
-    fix: &'a Fix,
-    diagnostic_source: DiagnosticSource,
-    notebook_index: Option<NotebookIndex>,
-    stylesheet: &'a DiagnosticStylesheet,
-}
-
-impl<'a> Diff<'a> {
-    fn from_diagnostic(
-        diagnostic: &'a Diagnostic,
-        stylesheet: &'a DiagnosticStylesheet,
-        resolver: &'a dyn FileResolver,
-    ) -> Option<Diff<'a>> {
-        let file = &diagnostic.primary_span_ref()?.file;
-        Some(Diff {
-            fix: diagnostic.fix()?,
-            diagnostic_source: file.diagnostic_source(resolver),
-            notebook_index: resolver.notebook_index(file),
-            stylesheet,
-        })
-    }
-}
-
-impl std::fmt::Display for Diff<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        let source_code = self.diagnostic_source.as_source_code();
-        let source_text = source_code.text();
-
-        // Partition the source code into end offsets for each cell. If `self.notebook_index` is
-        // `None`, indicating a regular script file, all the lines will be in one "cell" under the
-        // `None` key.
-        let cells = if let Some(notebook_index) = &self.notebook_index {
-            let mut last_cell = OneIndexed::MIN;
-            let mut cells: Vec<(Option<OneIndexed>, TextSize)> = Vec::new();
-            for (row, cell) in notebook_index.iter() {
-                if cell != last_cell {
-                    let offset = source_code.line_start(row);
-                    cells.push((Some(last_cell), offset));
-                    last_cell = cell;
-                }
-            }
-            cells.push((Some(last_cell), source_text.text_len()));
-            cells
-        } else {
-            vec![(None, source_text.text_len())]
-        };
-
-        let mut last_end = TextSize::ZERO;
-        for (cell, offset) in cells {
-            let range = TextRange::new(last_end, offset);
-            last_end = offset;
-            let input = source_code.slice(range);
-
-            let mut output = String::with_capacity(input.len());
-            let mut last_end = range.start();
-
-            let mut applied = 0;
-            for edit in self.fix.edits() {
-                if range.contains_range(edit.range()) {
-                    output.push_str(source_code.slice(TextRange::new(last_end, edit.start())));
-                    output.push_str(edit.content().unwrap_or_default());
-                    last_end = edit.end();
-                    applied += 1;
-                }
-            }
-
-            // No edits were applied, so there's no need to diff.
-            if applied == 0 {
-                continue;
-            }
-
-            output.push_str(&source_text[usize::from(last_end)..usize::from(range.end())]);
-
-            let diff = TextDiff::from_lines(input, &output);
-
-            let grouped_ops = diff.grouped_ops(3);
-
-            // Find the new line number with the largest number of digits to align all of the line
-            // number separators.
-            let last_op = grouped_ops.last().and_then(|group| group.last());
-            let largest_new = last_op.map(|op| op.new_range().end).unwrap_or_default();
-
-            let digit_with = OneIndexed::new(largest_new).unwrap_or_default().digits();
-
-            if let Some(cell) = cell {
-                // Room for 1 digit, 1 space, 1 `|`, and 1 more following space. This centers the
-                // three colons on the pipe.
-                writeln!(f, "{:>1$} cell {cell}", ":::", digit_with.get() + 3)?;
-            }
-
-            for (idx, group) in grouped_ops.iter().enumerate() {
-                if idx > 0 {
-                    writeln!(f, "{:-^1$}", "-", 80)?;
-                }
-                for op in group {
-                    for change in diff.iter_inline_changes(op) {
-                        let (sign, style, line_no_style, index) = match change.tag() {
-                            ChangeTag::Delete => (
-                                "-",
-                                self.stylesheet.deletion,
-                                self.stylesheet.deletion_line_no,
-                                None,
-                            ),
-                            ChangeTag::Insert => (
-                                "+",
-                                self.stylesheet.insertion,
-                                self.stylesheet.insertion_line_no,
-                                change.new_index(),
-                            ),
-                            ChangeTag::Equal => (
-                                "|",
-                                self.stylesheet.none,
-                                self.stylesheet.line_no,
-                                change.new_index(),
-                            ),
-                        };
-
-                        let line = Line {
-                            index: index.map(OneIndexed::from_zero_indexed),
-                            width: digit_with,
-                        };
-
-                        write!(
-                            f,
-                            "{line} {sign} ",
-                            line = fmt_styled(line, self.stylesheet.line_no),
-                            sign = fmt_styled(sign, line_no_style),
-                        )?;
-
-                        for (emphasized, value) in change.iter_strings_lossy() {
-                            let value = show_nonprinting(&value);
-                            let styled = fmt_styled(value, style);
-                            if emphasized {
-                                write!(f, "{}", fmt_styled(styled, self.stylesheet.emphasis))?;
-                            } else {
-                                write!(f, "{styled}")?;
-                            }
-                        }
-                        if change.missing_newline() {
-                            writeln!(f)?;
-                        }
-                    }
-                }
-            }
-        }
-
-        match self.fix.applicability() {
-            Applicability::Safe => {}
-            Applicability::Unsafe => {
-                writeln!(
-                    f,
-                    "{note}: {msg}",
-                    note = fmt_styled("note", self.stylesheet.warning),
-                    msg = fmt_styled(
-                        "This is an unsafe fix and may change runtime behavior",
-                        self.stylesheet.emphasis
-                    )
-                )?;
-            }
-            Applicability::DisplayOnly => {
-                // Note that this is still only used in tests. There's no `--display-only-fixes`
-                // analog to `--unsafe-fixes` for users to activate this or see the styling.
-                writeln!(
-                    f,
-                    "{note}: {msg}",
-                    note = fmt_styled("note", self.stylesheet.error),
-                    msg = fmt_styled(
-                        "This is a display-only fix and is likely to be incorrect",
-                        self.stylesheet.emphasis
-                    )
-                )?;
-            }
-        }
-
-        Ok(())
-    }
-}
-
-struct Line {
-    index: Option<OneIndexed>,
-    width: NonZeroUsize,
-}
-
-impl std::fmt::Display for Line {
-    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        match self.index {
-            None => {
-                for _ in 0..self.width.get() {
-                    f.write_str(" ")?;
-                }
-                Ok(())
-            }
-            Some(idx) => write!(f, "{:<width$}", idx, width = self.width.get()),
-        }
-    }
-}
-
-fn show_nonprinting(s: &str) -> Cow<'_, str> {
-    if s.find(['\x07', '\x08', '\x1b', '\x7f']).is_some() {
-        Cow::Owned(
-            s.replace('\x07', "␇")
-                .replace('\x08', "␈")
-                .replace('\x1b', "␛")
-                .replace('\x7f', "␡"),
-        )
-    } else {
-        Cow::Borrowed(s)
-    }
-}
-
 #[cfg(test)]
 mod tests {
-    use ruff_diagnostics::{Applicability, Edit, Fix};
-    use ruff_text_size::{TextLen, TextRange, TextSize};
+    use ruff_diagnostics::Applicability;
+    use ruff_text_size::TextRange;

    use crate::diagnostic::{
        Annotation, DiagnosticFormat, Severity,
@@ -477,7 +186,7 @@ print()
    /// For example, without the fix, we get diagnostics like this:
    ///
    /// ```
-    /// error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1a" instead
+    /// error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1A" instead
    ///  --> example.py:1:25
    ///   |
    /// 1 | nested_fstrings = f'␈{f'{f'␛'}'}'
@@ -497,13 +206,13 @@ print()
            .builder(
                "invalid-character-sub",
                Severity::Error,
-                r#"Invalid unescaped character SUB, use "\x1a" instead"#,
+                r#"Invalid unescaped character SUB, use "\x1A" instead"#,
            )
            .primary("example.py", "1:24", "1:24", "")
            .build();

        insta::assert_snapshot!(env.render(&diagnostic), @r#"
-        error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1a" instead
+        error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1A" instead
         --> example.py:1:25
          |
        1 | nested_fstrings = f'␈{f'{f'␛'}'}'
@@ -522,13 +231,13 @@ print()
            .builder(
                "invalid-character-sub",
                Severity::Error,
-                r#"Invalid unescaped character SUB, use "\x1a" instead"#,
+                r#"Invalid unescaped character SUB, use "\x1A" instead"#,
            )
            .primary("example.py", "1:1", "1:1", "")
            .build();

        insta::assert_snapshot!(env.render(&diagnostic), @r#"
-        error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1a" instead
+        error[invalid-character-sub]: Invalid unescaped character SUB, use "\x1A" instead
         --> example.py:1:2
          |
        1 | ␈␛
@@ -691,275 +400,4 @@ print()
        help: Remove `print` statement
        ");
    }
-
-    /// Test that we remap notebook cell line numbers in the diff as well as the main diagnostic.
-    #[test]
-    fn notebook_output_with_diff() {
-        let (mut env, diagnostics) = create_notebook_diagnostics(DiagnosticFormat::Full);
-        env.show_fix_diff(true);
-        env.fix_applicability(Applicability::DisplayOnly);
-
-        insta::assert_snapshot!(env.render_diagnostics(&diagnostics), @r"
-        error[unused-import][*]: `os` imported but unused
-         --> notebook.ipynb:cell 1:2:8
-          |
-        1 | # cell 1
-        2 | import os
-          |        ^^
-          |
-        help: Remove unused import: `os`
-         ::: cell 1
-        1 | # cell 1
-          - import os
-
-        error[unused-import][*]: `math` imported but unused
-         --> notebook.ipynb:cell 2:2:8
-          |
-        1 | # cell 2
-        2 | import math
-          |        ^^^^
-        3 |
-        4 | print('hello world')
-          |
-        help: Remove unused import: `math`
-         ::: cell 2
-        1 | # cell 2
-          - import math
-        2 | 
-        3 | print('hello world')
-
-        error[unused-variable][*]: Local variable `x` is assigned to but never used
-         --> notebook.ipynb:cell 3:4:5
-          |
-        2 | def foo():
-        3 |     print()
-        4 |     x = 1
-          |     ^
-          |
-        help: Remove assignment to unused variable `x`
-         ::: cell 3
-        1 | # cell 3
-        2 | def foo():
-        3 |     print()
-          -     x = 1
-        4 | 
-        note: This is an unsafe fix and may change runtime behavior
-        ");
-    }
-
-    #[test]
-    fn notebook_output_with_diff_spanning_cells() {
-        let (mut env, mut diagnostics) = create_notebook_diagnostics(DiagnosticFormat::Full);
-        env.show_fix_diff(true);
-        env.fix_applicability(Applicability::DisplayOnly);
-
-        // Move all of the edits from the later diagnostics to the first diagnostic to simulate a
-        // single diagnostic with edits in different cells.
-        let mut diagnostic = diagnostics.swap_remove(0);
-        let fix = diagnostic.fix_mut().unwrap();
-        let mut edits = fix.edits().to_vec();
-        for diag in diagnostics {
-            edits.extend_from_slice(diag.fix().unwrap().edits());
-        }
-        *fix = Fix::unsafe_edits(edits.remove(0), edits);
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[unused-import][*]: `os` imported but unused
-         --> notebook.ipynb:cell 1:2:8
-          |
-        1 | # cell 1
-        2 | import os
-          |        ^^
-          |
-        help: Remove unused import: `os`
-         ::: cell 1
-        1 | # cell 1
-          - import os
-         ::: cell 2
-        1 | # cell 2
-          - import math
-        2 | 
-        3 | print('hello world')
-         ::: cell 3
-        1 | # cell 3
-        2 | def foo():
-        3 |     print()
-          -     x = 1
-        4 | 
-        note: This is an unsafe fix and may change runtime behavior
-        ");
-    }
-
-    /// Carriage return (`\r`) is a valid line-ending in Python, so we should normalize this to a
-    /// line feed (`\n`) for rendering. Otherwise we report a single long line for this case.
-    #[test]
-    fn normalize_carriage_return() {
-        let mut env = TestEnvironment::new();
-        env.add(
-            "example.py",
-            "# Keep parenthesis around preserved CR\rint(-\r    1)\rint(+\r    1)",
-        );
-        env.format(DiagnosticFormat::Full);
-
-        let mut diagnostic = env.err().build();
-        let span = env
-            .path("example.py")
-            .with_range(TextRange::at(TextSize::new(39), TextSize::new(0)));
-        let annotation = Annotation::primary(span);
-        diagnostic.annotate(annotation);
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[test-diagnostic]: main diagnostic message
-         --> example.py:2:1
-          |
-        1 | # Keep parenthesis around preserved CR
-        2 | int(-
-          | ^
-        3 |     1)
-        4 | int(+
-          |
-        ");
-    }
-
-    /// Without stripping the BOM, we report an error in column 2, unlike Ruff.
-    #[test]
-    fn strip_bom() {
-        let mut env = TestEnvironment::new();
-        env.add("example.py", "\u{feff}import foo");
-        env.format(DiagnosticFormat::Full);
-
-        let mut diagnostic = env.err().build();
-        let span = env
-            .path("example.py")
-            .with_range(TextRange::at(TextSize::new(3), TextSize::new(0)));
-        let annotation = Annotation::primary(span);
-        diagnostic.annotate(annotation);
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[test-diagnostic]: main diagnostic message
-         --> example.py:1:1
-          |
-        1 | import foo
-          | ^
-          |
-        ");
-    }
-
-    #[test]
-    fn bom_with_default_range() {
-        let mut env = TestEnvironment::new();
-        env.add("example.py", "\u{feff}import foo");
-        env.format(DiagnosticFormat::Full);
-
-        let mut diagnostic = env.err().build();
-        let span = env.path("example.py").with_range(TextRange::default());
-        let annotation = Annotation::primary(span);
-        diagnostic.annotate(annotation);
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[test-diagnostic]: main diagnostic message
-         --> example.py:1:1
-          |
-        1 | import foo
-          | ^
-          |
-        ");
-    }
-
-    /// We previously rendered this correctly, but the header was falling back to 1:1 for ranges
-    /// pointing to the final newline in a file. Like Ruff, we now use the offset of the first
-    /// character in the nonexistent final line in the header.
-    #[test]
-    fn end_of_file() {
-        let mut env = TestEnvironment::new();
-        let contents = "unexpected eof\n";
-        env.add("example.py", contents);
-        env.format(DiagnosticFormat::Full);
-
-        let mut diagnostic = env.err().build();
-        let span = env
-            .path("example.py")
-            .with_range(TextRange::at(contents.text_len(), TextSize::new(0)));
-        let annotation = Annotation::primary(span);
-        diagnostic.annotate(annotation);
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[test-diagnostic]: main diagnostic message
-         --> example.py:2:1
-          |
-        1 | unexpected eof
-          |               ^
-          |
-        ");
-    }
-
-    /// Test that we handle the width calculation for the line number correctly even for context
-    /// lines at the end of a diff. For example, we want it to render like this:
-    ///
-    /// ```
-    /// 8  |
-    /// 9  |
-    /// 10 |
-    /// ```
-    ///
-    /// and not like this:
-    ///
-    /// ```
-    /// 8 |
-    /// 9 |
-    /// 10 |
-    /// ```
-    #[test]
-    fn longer_line_number_end_of_context() {
-        let mut env = TestEnvironment::new();
-        let contents = "\
-line 1
-line 2
-line 3
-line 4
-line 5
-line 6
-line 7
-line 8
-line 9
-line 10
-        ";
-        env.add("example.py", contents);
-        env.format(DiagnosticFormat::Full);
-        env.show_fix_diff(true);
-        env.fix_applicability(Applicability::DisplayOnly);
-
-        let mut diagnostic = env.err().primary("example.py", "3", "3", "label").build();
-        diagnostic.help("Start of diff:");
-        let target = "line 7";
-        let line9 = contents.find(target).unwrap();
-        let range = TextRange::at(TextSize::try_from(line9).unwrap(), target.text_len());
-        diagnostic.set_fix(Fix::unsafe_edit(Edit::range_replacement(
-            format!("fixed {target}"),
-            range,
-        )));
-
-        insta::assert_snapshot!(env.render(&diagnostic), @r"
-        error[test-diagnostic][*]: main diagnostic message
-         --> example.py:3:1
-          |
-        1 | line 1
-        2 | line 2
-        3 | line 3
-          | ^^^^^^ label
-        4 | line 4
-        5 | line 5
-          |
-        help: Start of diff:
-        4  | line 4
-        5  | line 5
-        6  | line 6
-           - line 7
-        7  + fixed line 7
-        8  | line 8
-        9  | line 9
-        10 | line 10
-        note: This is an unsafe fix and may change runtime behavior
-        ");
-    }
 }
--- a/crates/ruff_db/src/diagnostic/render/gitlab.rs
+++ b/crates/ruff_db/src/diagnostic/render/gitlab.rs
@@ -1,205 +0,0 @@
-use std::{
-    collections::HashSet,
-    hash::{DefaultHasher, Hash, Hasher},
-    path::Path,
-};
-
-use ruff_source_file::LineColumn;
-use serde::{Serialize, Serializer, ser::SerializeSeq};
-
-use crate::diagnostic::{Diagnostic, Severity};
-
-use super::FileResolver;
-
-pub(super) struct GitlabRenderer<'a> {
-    resolver: &'a dyn FileResolver,
-}
-
-impl<'a> GitlabRenderer<'a> {
-    pub(super) fn new(resolver: &'a dyn FileResolver) -> Self {
-        Self { resolver }
-    }
-}
-
-impl GitlabRenderer<'_> {
-    pub(super) fn render(
-        &self,
-        f: &mut std::fmt::Formatter,
-        diagnostics: &[Diagnostic],
-    ) -> std::fmt::Result {
-        write!(
-            f,
-            "{}",
-            serde_json::to_string_pretty(&SerializedMessages {
-                diagnostics,
-                resolver: self.resolver,
-                #[expect(
-                    clippy::disallowed_methods,
-                    reason = "We don't have access to a `System` here, \
-                              and this is only intended for use by GitLab CI, \
-                              which runs on a real `System`."
-                )]
-                project_dir: std::env::var("CI_PROJECT_DIR").ok().as_deref(),
-            })
-            .unwrap()
-        )
-    }
-}
-
-struct SerializedMessages<'a> {
-    diagnostics: &'a [Diagnostic],
-    resolver: &'a dyn FileResolver,
-    project_dir: Option<&'a str>,
-}
-
-impl Serialize for SerializedMessages<'_> {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let mut s = serializer.serialize_seq(Some(self.diagnostics.len()))?;
-        let mut fingerprints = HashSet::<u64>::with_capacity(self.diagnostics.len());
-
-        for diagnostic in self.diagnostics {
-            let location = diagnostic
-                .primary_span()
-                .map(|span| {
-                    let file = span.file();
-                    let positions = if self.resolver.is_notebook(file) {
-                        // We can't give a reasonable location for the structured formats,
-                        // so we show one that's clearly a fallback
-                        Default::default()
-                    } else {
-                        let diagnostic_source = file.diagnostic_source(self.resolver);
-                        let source_code = diagnostic_source.as_source_code();
-                        span.range()
-                            .map(|range| Positions {
-                                begin: source_code.line_column(range.start()),
-                                end: source_code.line_column(range.end()),
-                            })
-                            .unwrap_or_default()
-                    };
-
-                    let path = self.project_dir.as_ref().map_or_else(
-                        || file.relative_path(self.resolver).display().to_string(),
-                        |project_dir| relativize_path_to(file.path(self.resolver), project_dir),
-                    );
-
-                    Location { path, positions }
-                })
-                .unwrap_or_default();
-
-            let mut message_fingerprint = fingerprint(diagnostic, &location.path, 0);
-
-            // Make sure that we do not get a fingerprint that is already in use
-            // by adding in the previously generated one.
-            while fingerprints.contains(&message_fingerprint) {
-                message_fingerprint = fingerprint(diagnostic, &location.path, message_fingerprint);
-            }
-            fingerprints.insert(message_fingerprint);
-
-            let description = diagnostic.body();
-            let check_name = diagnostic.secondary_code_or_id();
-            let severity = match diagnostic.severity() {
-                Severity::Info => "info",
-                Severity::Warning => "minor",
-                Severity::Error => "major",
-                // Another option here is `blocker`
-                Severity::Fatal => "critical",
-            };
-
-            let value = Message {
-                check_name,
-                // GitLab doesn't display the separate `check_name` field in a Code Quality report,
-                // so prepend it to the description too.
-                description: format!("{check_name}: {description}"),
-                severity,
-                fingerprint: format!("{:x}", message_fingerprint),
-                location,
-            };
-
-            s.serialize_element(&value)?;
-        }
-
-        s.end()
-    }
-}
-
-#[derive(Serialize)]
-struct Message<'a> {
-    check_name: &'a str,
-    description: String,
-    severity: &'static str,
-    fingerprint: String,
-    location: Location,
-}
-
-/// The place in the source code where the issue was discovered.
-///
-/// According to the CodeClimate report format [specification] linked from the GitLab [docs], this
-/// field is required, so we fall back on a default `path` and position if the diagnostic doesn't
-/// have a primary span.
-///
-/// [specification]: https://github.com/codeclimate/platform/blob/master/spec/analyzers/SPEC.md#data-types
-/// [docs]: https://docs.gitlab.com/ci/testing/code_quality/#code-quality-report-format
-#[derive(Default, Serialize)]
-struct Location {
-    path: String,
-    positions: Positions,
-}
-
-#[derive(Default, Serialize)]
-struct Positions {
-    begin: LineColumn,
-    end: LineColumn,
-}
-
-/// Generate a unique fingerprint to identify a violation.
-fn fingerprint(diagnostic: &Diagnostic, project_path: &str, salt: u64) -> u64 {
-    let mut hasher = DefaultHasher::new();
-
-    salt.hash(&mut hasher);
-    diagnostic.name().hash(&mut hasher);
-    project_path.hash(&mut hasher);
-
-    hasher.finish()
-}
-
-/// Convert an absolute path to be relative to the specified project root.
-fn relativize_path_to<P: AsRef<Path>, R: AsRef<Path>>(path: P, project_root: R) -> String {
-    format!(
-        "{}",
-        pathdiff::diff_paths(&path, project_root)
-            .expect("Could not diff paths")
-            .display()
-    )
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::diagnostic::{
-        DiagnosticFormat,
-        render::tests::{create_diagnostics, create_syntax_error_diagnostics},
-    };
-
-    const FINGERPRINT_FILTERS: [(&str, &str); 1] = [(
-        r#""fingerprint": "[a-z0-9]+","#,
-        r#""fingerprint": "<redacted>","#,
-    )];
-
-    #[test]
-    fn output() {
-        let (env, diagnostics) = create_diagnostics(DiagnosticFormat::Gitlab);
-        insta::with_settings!({filters => FINGERPRINT_FILTERS}, {
-            insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
-        });
-    }
-
-    #[test]
-    fn syntax_errors() {
-        let (env, diagnostics) = create_syntax_error_diagnostics(DiagnosticFormat::Gitlab);
-        insta::with_settings!({filters => FINGERPRINT_FILTERS}, {
-            insta::assert_snapshot!(env.render_diagnostics(&diagnostics));
-        });
-    }
-}
--- a/crates/ruff_db/src/diagnostic/render/snapshots/ruff_dbdiagnosticrendergitlabtests__output.snap
+++ b/crates/ruff_db/src/diagnostic/render/snapshots/ruff_dbdiagnosticrendergitlabtests__output.snap
@@ -1,63 +0,0 @@
---
-source: crates/ruff_db/src/diagnostic/render/gitlab.rs
-expression: env.render_diagnostics(&diagnostics)
---
-[
-  {
-    "check_name": "F401",
-    "description": "F401: `os` imported but unused",
-    "severity": "major",
-    "fingerprint": "<redacted>",
-    "location": {
-      "path": "fib.py",
-      "positions": {
-        "begin": {
-          "line": 1,
-          "column": 8
-        },
-        "end": {
-          "line": 1,
-          "column": 10
-        }
-      }
-    }
-  },
-  {
-    "check_name": "F841",
-    "description": "F841: Local variable `x` is assigned to but never used",
-    "severity": "major",
-    "fingerprint": "<redacted>",
-    "location": {
-      "path": "fib.py",
-      "positions": {
-        "begin": {
-          "line": 6,
-          "column": 5
-        },
-        "end": {
-          "line": 6,
-          "column": 6
-        }
-      }
-    }
-  },
-  {
-    "check_name": "F821",
-    "description": "F821: Undefined name `a`",
-    "severity": "major",
-    "fingerprint": "<redacted>",
-    "location": {
-      "path": "undef.py",
-      "positions": {
-        "begin": {
-          "line": 1,
-          "column": 4
-        },
-        "end": {
-          "line": 1,
-          "column": 5
-        }
-      }
-    }
-  }
-]
--- a/crates/ruff_db/src/diagnostic/render/snapshots/ruff_dbdiagnosticrendergitlabtests__syntax_errors.snap
+++ b/crates/ruff_db/src/diagnostic/render/snapshots/ruff_dbdiagnosticrendergitlabtests__syntax_errors.snap
@@ -1,44 +0,0 @@
---
-source: crates/ruff_db/src/diagnostic/render/gitlab.rs
-expression: env.render_diagnostics(&diagnostics)
---
-[
-  {
-    "check_name": "invalid-syntax",
-    "description": "invalid-syntax: Expected one or more symbol names after import",
-    "severity": "major",
-    "fingerprint": "<redacted>",
-    "location": {
-      "path": "syntax_errors.py",
-      "positions": {
-        "begin": {
-          "line": 1,
-          "column": 15
-        },
-        "end": {
-          "line": 2,
-          "column": 1
-        }
-      }
-    }
-  },
-  {
-    "check_name": "invalid-syntax",
-    "description": "invalid-syntax: Expected ')', found newline",
-    "severity": "major",
-    "fingerprint": "<redacted>",
-    "location": {
-      "path": "syntax_errors.py",
-      "positions": {
-        "begin": {
-          "line": 3,
-          "column": 12
-        },
-        "end": {
-          "line": 4,
-          "column": 1
-        }
-      }
-    }
-  }
-]
--- a/crates/ruff_db/src/diagnostic/stylesheet.rs
+++ b/crates/ruff_db/src/diagnostic/stylesheet.rs
@@ -43,10 +43,6 @@ pub struct DiagnosticStylesheet {
    pub(crate) none: Style,
    pub(crate) separator: Style,
    pub(crate) secondary_code: Style,
-    pub(crate) insertion: Style,
-    pub(crate) deletion: Style,
-    pub(crate) insertion_line_no: Style,
-    pub(crate) deletion_line_no: Style,
 }

 impl Default for DiagnosticStylesheet {
@@ -70,10 +66,6 @@ impl DiagnosticStylesheet {
            none: Style::new(),
            separator: AnsiColor::Cyan.on_default(),
            secondary_code: AnsiColor::Red.on_default().effects(Effects::BOLD),
-            insertion: AnsiColor::Green.on_default(),
-            deletion: AnsiColor::Red.on_default(),
-            insertion_line_no: AnsiColor::Green.on_default().effects(Effects::BOLD),
-            deletion_line_no: AnsiColor::Red.on_default().effects(Effects::BOLD),
        }
    }

@@ -89,10 +81,6 @@ impl DiagnosticStylesheet {
            none: Style::new(),
            separator: Style::new(),
            secondary_code: Style::new(),
-            insertion: Style::new(),
-            deletion: Style::new(),
-            insertion_line_no: Style::new(),
-            deletion_line_no: Style::new(),
        }
    }
 }
--- a/crates/ruff_db/src/file_revision.rs
+++ b/crates/ruff_db/src/file_revision.rs
@@ -9,7 +9,7 @@ use crate::system::file_time_now;
 /// * The last modification time of the file.
 /// * The hash of the file's content.
 /// * The revision as it comes from an external system, for example the LSP.
-#[derive(Copy, Clone, Debug, Eq, PartialEq, Default, get_size2::GetSize)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Default)]
 pub struct FileRevision(u128);

 impl FileRevision {
--- a/crates/ruff_db/src/files.rs
+++ b/crates/ruff_db/src/files.rs
@@ -87,12 +87,11 @@ impl Files {
            .system_by_path
            .entry(absolute.clone())
            .or_insert_with(|| {
+                tracing::trace!("Adding file '{path}'");
+
                let metadata = db.system().path_metadata(path);
-
-                tracing::trace!("Adding file '{absolute}'");
-
                let durability = self
-                    .root(db, &absolute)
+                    .root(db, path)
                    .map_or(Durability::default(), |root| root.durability(db));

                let builder = File::builder(FilePath::System(absolute))
@@ -290,7 +289,7 @@ impl std::panic::RefUnwindSafe for Files {}
 /// # Ordering
 /// Ordering is based on the file's salsa-assigned id and not on its values.
 /// The id may change between runs.
-#[salsa::input(heap_size=ruff_memory_usage::heap_size)]
+#[salsa::input]
 #[derive(PartialOrd, Ord)]
 pub struct File {
    /// The path of the file (immutable).
@@ -522,7 +521,7 @@ impl VirtualFile {
 // The types in here need to be public because they're salsa ingredients but we
 // don't want them to be publicly accessible. That's why we put them into a private module.
 mod private {
-    #[derive(Copy, Clone, Debug, Eq, PartialEq, Default, get_size2::GetSize)]
+    #[derive(Copy, Clone, Debug, Eq, PartialEq, Default)]
    pub enum FileStatus {
        /// The file exists.
        #[default]
--- a/crates/ruff_db/src/files/file_root.rs
+++ b/crates/ruff_db/src/files/file_root.rs
@@ -16,7 +16,7 @@ use crate::system::{SystemPath, SystemPathBuf};
 /// The main usage of file roots is to determine a file's durability. But it can also be used
 /// to make a salsa query dependent on whether a file in a root has changed without writing any
 /// manual invalidation logic.
-#[salsa::input(debug, heap_size=ruff_memory_usage::heap_size)]
+#[salsa::input(debug)]
 pub struct FileRoot {
    /// The path of a root is guaranteed to never change.
    #[returns(deref)]
@@ -37,7 +37,7 @@ impl FileRoot {
    }
 }

-#[derive(Copy, Clone, Debug, Eq, PartialEq, get_size2::GetSize)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub enum FileRootKind {
    /// The root of a project.
    Project,
--- a/crates/ruff_db/src/files/path.rs
+++ b/crates/ruff_db/src/files/path.rs
@@ -11,7 +11,7 @@ use std::fmt::{Display, Formatter};
 /// * a file stored on the [host system](crate::system::System).
 /// * a virtual file stored on the [host system](crate::system::System).
 /// * a vendored file stored in the [vendored file system](crate::vendored::VendoredFileSystem).
-#[derive(Clone, Debug, Eq, PartialEq, Hash, get_size2::GetSize)]
+#[derive(Clone, Debug, Eq, PartialEq, Hash)]
 pub enum FilePath {
    /// Path to a file on the [host system](crate::system::System).
    System(SystemPathBuf),
--- a/crates/ruff_db/src/lib.rs
+++ b/crates/ruff_db/src/lib.rs
@@ -1,8 +1,3 @@
-#![warn(
-    clippy::disallowed_methods,
-    reason = "Prefer System trait methods over std methods"
-)]
-
 use crate::files::Files;
 use crate::system::System;
 use crate::vendored::VendoredFileSystem;
@@ -70,10 +65,6 @@ pub trait Db: salsa::Database {
 /// to process work in parallel. For example, to index a directory or checking the files of a project.
 /// ty can still spawn more threads for other tasks, e.g. to wait for a Ctrl+C signal or
 /// watching the files for changes.
-#[expect(
-    clippy::disallowed_methods,
-    reason = "We don't have access to System here, but this is also only used by the CLI and the server which always run on a real system."
-)]
 pub fn max_parallelism() -> NonZeroUsize {
    std::env::var(EnvVars::TY_MAX_PARALLELISM)
        .or_else(|_| std::env::var(EnvVars::RAYON_NUM_THREADS))
--- a/crates/ruff_db/src/parsed.rs
+++ b/crates/ruff_db/src/parsed.rs
@@ -92,14 +92,14 @@ impl ParsedModule {
        self.inner.store(None);
    }

-    /// Returns the pointer address of this [`ParsedModule`].
+    /// Returns a pointer for this [`ParsedModule`].
    ///
    /// The pointer uniquely identifies the module within the current Salsa revision,
    /// regardless of whether particular [`ParsedModuleRef`] instances are garbage collected.
-    pub fn addr(&self) -> usize {
+    pub fn as_ptr(&self) -> *const () {
        // Note that the outer `Arc` in `inner` is stable across garbage collection, while the inner
        // `Arc` within the `ArcSwap` may change.
-        Arc::as_ptr(&self.inner).addr()
+        Arc::as_ptr(&self.inner).cast()
    }
 }

@@ -202,13 +202,9 @@ mod indexed {

        /// Returns the node at the given index.
        pub fn get_by_index<'ast>(&'ast self, index: NodeIndex) -> AnyRootNodeRef<'ast> {
-            let index = index
-                .as_u32()
-                .expect("attempted to access uninitialized `NodeIndex`");
-
            // Note that this method restores the correct lifetime: the nodes are valid for as
            // long as the reference to `IndexedModule` is alive.
-            self.index[index as usize]
+            self.index[index.as_usize()]
        }
    }

@@ -224,7 +220,7 @@ mod indexed {
            T: HasNodeIndex + std::fmt::Debug,
            AnyRootNodeRef<'a>: From<&'a T>,
        {
-            node.node_index().set(NodeIndex::from(self.index));
+            node.node_index().set(self.index);
            self.nodes.push(AnyRootNodeRef::from(node));
            self.index += 1;
        }
--- a/crates/ruff_db/src/system.rs
+++ b/crates/ruff_db/src/system.rs
@@ -46,7 +46,7 @@ pub type Result<T> = std::io::Result<T>;
 ///    * File watching isn't supported.
 ///
 /// Abstracting the system also enables tests to use a more efficient in-memory file system.
-pub trait System: Debug + Sync + Send {
+pub trait System: Debug {
    /// Reads the metadata of the file or directory at `path`.
    ///
    /// This function will traverse symbolic links to query information about the destination file.
@@ -197,8 +197,6 @@ pub trait System: Debug + Sync + Send {
    fn as_any(&self) -> &dyn std::any::Any;

    fn as_any_mut(&mut self) -> &mut dyn std::any::Any;
-
-    fn dyn_clone(&self) -> Box<dyn System>;
 }

 #[derive(Debug, Default, Copy, Clone, Eq, PartialEq)]
--- a/crates/ruff_db/src/system/os.rs
+++ b/crates/ruff_db/src/system/os.rs
@@ -1,5 +1,3 @@
-#![allow(clippy::disallowed_methods)]
-
 use super::walk_directory::{
    self, DirectoryWalker, WalkDirectoryBuilder, WalkDirectoryConfiguration,
    WalkDirectoryVisitorBuilder, WalkState,
@@ -257,10 +255,6 @@ impl System for OsSystem {
    fn env_var(&self, name: &str) -> std::result::Result<String, std::env::VarError> {
        std::env::var(name)
    }
-
-    fn dyn_clone(&self) -> Box<dyn System> {
-        Box::new(self.clone())
-    }
 }

 impl OsSystem {
--- a/crates/ruff_db/src/system/path.rs
+++ b/crates/ruff_db/src/system/path.rs
@@ -762,7 +762,7 @@ impl SystemVirtualPath {
 }

 /// An owned, virtual path on [`System`](`super::System`) (akin to [`String`]).
-#[derive(Eq, PartialEq, Clone, Hash, PartialOrd, Ord, get_size2::GetSize)]
+#[derive(Eq, PartialEq, Clone, Hash, PartialOrd, Ord)]
 pub struct SystemVirtualPathBuf(String);

 impl SystemVirtualPathBuf {
--- a/crates/ruff_db/src/system/test.rs
+++ b/crates/ruff_db/src/system/test.rs
@@ -146,10 +146,6 @@ impl System for TestSystem {
    fn case_sensitivity(&self) -> CaseSensitivity {
        self.system().case_sensitivity()
    }
-
-    fn dyn_clone(&self) -> Box<dyn System> {
-        Box::new(self.clone())
-    }
 }

 impl Default for TestSystem {
@@ -398,13 +394,6 @@ impl System for InMemorySystem {
    fn case_sensitivity(&self) -> CaseSensitivity {
        CaseSensitivity::CaseSensitive
    }
-
-    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(),
-        })
-    }
 }

 impl WritableSystem for InMemorySystem {
--- a/crates/ruff_dev/Cargo.toml
+++ b/crates/ruff_dev/Cargo.toml
@@ -13,7 +13,6 @@ license = { workspace = true }
 [dependencies]
 ty = { workspace = true }
 ty_project = { workspace = true, features = ["schemars"] }
-ty_python_semantic = { workspace = true }
 ty_static = { workspace = true }
 ruff = { workspace = true }
 ruff_formatter = { workspace = true }
--- a/crates/ruff_dev/src/generate_ty_rules.rs
+++ b/crates/ruff_dev/src/generate_ty_rules.rs
@@ -52,7 +52,7 @@ pub(crate) fn main(args: &Args) -> Result<()> {
 }

 fn generate_markdown() -> String {
-    let registry = ty_python_semantic::default_lint_registry();
+    let registry = &*ty_project::DEFAULT_LINT_REGISTRY;

    let mut output = String::new();

--- a/crates/ruff_diagnostics/Cargo.toml
+++ b/crates/ruff_diagnostics/Cargo.toml
@@ -14,11 +14,8 @@ license = { workspace = true }
 doctest = false

 [dependencies]
-ruff_text_size = { workspace = true, features = ["get-size"] }
+ruff_text_size = { workspace = true }

 get-size2 = { workspace = true }
 is-macro = { workspace = true }
 serde = { workspace = true, optional = true, features = [] }
-
-[features]
-serde = ["dep:serde", "ruff_text_size/serde"]
--- a/crates/ruff_linter/Cargo.toml
+++ b/crates/ruff_linter/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruff_linter"
-version = "0.12.12"
+version = "0.12.8"
 publish = false
 authors = { workspace = true }
 edition = { workspace = true }
@@ -13,6 +13,7 @@ license = { workspace = true }
 [lib]

 [dependencies]
+ruff_annotate_snippets = { workspace = true }
 ruff_cache = { workspace = true }
 ruff_db = { workspace = true, features = ["junit", "serde"] }
 ruff_diagnostics = { workspace = true, features = ["serde"] }
@@ -51,6 +52,7 @@ path-absolutize = { workspace = true, features = [
    "once_cell_cache",
    "use_unix_paths_on_wasm",
 ] }
+pathdiff = { workspace = true }
 pep440_rs = { workspace = true }
 pyproject-toml = { workspace = true }
 regex = { workspace = true }
--- a/crates/ruff_linter/resources/test/fixtures/airflow/AIR301_names.py
+++ b/crates/ruff_linter/resources/test/fixtures/airflow/AIR301_names.py
@@ -12,9 +12,7 @@ from airflow import (
 from airflow.api_connexion.security import requires_access
 from airflow.contrib.aws_athena_hook import AWSAthenaHook
 from airflow.datasets import DatasetAliasEvent
-from airflow.operators.postgres_operator import Mapping
 from airflow.operators.subdag import SubDagOperator
-from airflow.secrets.cache import SecretCache
 from airflow.secrets.local_filesystem import LocalFilesystemBackend
 from airflow.triggers.external_task import TaskStateTrigger
 from airflow.utils import dates
@@ -53,16 +51,11 @@ DatasetAliasEvent()
 # airflow.operators.subdag.*
 SubDagOperator()

-# airflow.operators.postgres_operator
-Mapping()

 # airflow.secrets
 # get_connection
 LocalFilesystemBackend()

-# airflow.secrets.cache
-SecretCache()
-

 # airflow.triggers.external_task
 TaskStateTrigger()
--- a/crates/ruff_linter/resources/test/fixtures/airflow/AIR311_names.py
+++ b/crates/ruff_linter/resources/test/fixtures/airflow/AIR311_names.py
@@ -34,7 +34,7 @@ task_group()
 setup()
 from airflow.decorators import teardown
 from airflow.io.path import ObjectStoragePath
-from airflow.io.store import attach
+from airflow.io.storage import attach
 from airflow.models import DAG as DAGFromModel
 from airflow.models import (
    Connection,
@@ -70,40 +70,7 @@ from airflow.timetables.datasets import DatasetOrTimeSchedule
 from airflow.utils.dag_parsing_context import get_parsing_context

 # airflow.timetables.datasets
-DatasetOrTimeSchedule(datasets=[])
+DatasetOrTimeSchedule()

 # airflow.utils.dag_parsing_context
 get_parsing_context()
-
-from airflow.decorators.base import (
-    DecoratedMappedOperator,
-    DecoratedOperator,
-    TaskDecorator,
-    get_unique_task_id,
-    task_decorator_factory,
-)
-
-# airflow.decorators.base
-DecoratedMappedOperator()
-DecoratedOperator()
-TaskDecorator()
-get_unique_task_id()
-task_decorator_factory()
-
-
-from airflow.models import Param
-
-# airflow.models
-Param()
-
-
-from airflow.sensors.base import (
-    BaseSensorOperator,
-    PokeReturnValue,
-    poke_mode_only,
-)
-
-# airflow.sensors.base
-BaseSensorOperator()
-PokeReturnValue()
-poke_mode_only()
--- a/crates/ruff_linter/resources/test/fixtures/airflow/AIR312.py
+++ b/crates/ruff_linter/resources/test/fixtures/airflow/AIR312.py
@@ -9,6 +9,7 @@ from airflow.operators.empty import EmptyOperator
 from airflow.operators.latest_only import LatestOnlyOperator
 from airflow.operators.trigger_dagrun import TriggerDagRunOperator
 from airflow.operators.weekday import BranchDayOfWeekOperator
+from airflow.sensors.date_time import DateTimeSensor

 FSHook()
 PackageIndexHook()
@@ -21,6 +22,7 @@ EmptyOperator()

 LatestOnlyOperator()
 BranchDayOfWeekOperator()
+DateTimeSensor()

 from airflow.operators.python import (
    BranchPythonOperator,
@@ -28,23 +30,16 @@ from airflow.operators.python import (
    PythonVirtualenvOperator,
    ShortCircuitOperator,
 )
-from airflow.sensors.bash import BashSensor
-from airflow.sensors.date_time import DateTimeSensor
-
-BranchPythonOperator()
-PythonOperator()
-PythonVirtualenvOperator()
-ShortCircuitOperator()
-
-BashSensor()
-DateTimeSensor()
 from airflow.sensors.date_time import DateTimeSensorAsync
 from airflow.sensors.external_task import (
    ExternalTaskMarker,
    ExternalTaskSensor,
 )
+from airflow.sensors.time_sensor import (
+    TimeSensor,
+    TimeSensorAsync,
+)
 from airflow.sensors.filesystem import FileSensor
-from airflow.sensors.python import PythonSensor

 BranchPythonOperator()
 PythonOperator()
@@ -54,13 +49,6 @@ DateTimeSensorAsync()
 ExternalTaskMarker()
 ExternalTaskSensor()
 FileSensor()
-PythonSensor()
-
-from airflow.sensors.time_sensor import (
-    TimeSensor,
-    TimeSensorAsync,
-)
-
 TimeSensor()
 TimeSensorAsync()

--- a/crates/ruff_linter/resources/test/fixtures/fastapi/FAST003.py
+++ b/crates/ruff_linter/resources/test/fixtures/fastapi/FAST003.py
@@ -213,17 +213,3 @@ async def get_id_pydantic_full(
 async def get_id_pydantic_short(params: Annotated[PydanticParams, Depends()]): ...
@app.get("/{my_id}")
 async def get_id_init_not_annotated(params = Depends(InitParams)): ...
-
-@app.get("/things/{ thing_id }")
-async def read_thing(query: str):
-    return {"query": query}
-
-
-@app.get("/things/{ thing_id : path }")
-async def read_thing(query: str):
-    return {"query": query}
-
-
-@app.get("/things/{ thing_id : str }")
-async def read_thing(query: str):
-    return {"query": query}
--- a/crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC212.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC212.py
@@ -1,75 +0,0 @@
-from typing import Optional
-
-import httpx
-
-
-def foo():
-    client = httpx.Client()
-    client.close()  # Ok
-    client.delete()  # Ok
-    client.get()  # Ok
-    client.head()  # Ok
-    client.options()  # Ok
-    client.patch()  # Ok
-    client.post()  # Ok
-    client.put()  # Ok
-    client.request()  # Ok
-    client.send()  # Ok
-    client.stream()  # Ok
-
-    client.anything()  # Ok
-    client.build_request()  # Ok
-    client.is_closed  # Ok
-
-
-async def foo():
-    client = httpx.Client()
-    client.close()  # ASYNC212
-    client.delete()  # ASYNC212
-    client.get()  # ASYNC212
-    client.head()  # ASYNC212
-    client.options()  # ASYNC212
-    client.patch()  # ASYNC212
-    client.post()  # ASYNC212
-    client.put()  # ASYNC212
-    client.request()  # ASYNC212
-    client.send()  # ASYNC212
-    client.stream()  # ASYNC212
-
-    client.anything()  # Ok
-    client.build_request()  # Ok
-    client.is_closed  # Ok
-
-
-async def foo(client: httpx.Client):
-    client.request()  # ASYNC212
-    client.anything()  # Ok
-
-
-async def foo(client: httpx.Client | None):
-    client.request()  # ASYNC212
-    client.anything()  # Ok
-
-
-async def foo(client: Optional[httpx.Client]):
-    client.request()  # ASYNC212
-    client.anything()  # Ok
-
-
-async def foo():
-    client: httpx.Client = ...
-    client.request()  # ASYNC212
-    client.anything()  # Ok
-
-
-global_client = httpx.Client()
-
-
-async def foo():
-    global_client.request()  # ASYNC212
-    global_client.anything()  # Ok
-
-
-async def foo():
-    async with httpx.AsyncClient() as client:
-        await client.get()  # Ok
--- a/crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC250.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_async/ASYNC250.py
@@ -1,22 +0,0 @@
-def foo():
-    k = input()  # Ok
-    input("hello world")  # Ok
-
-
-async def foo():
-    k = input()  # ASYNC250
-    input("hello world")  # ASYNC250
-
-
-import builtins
-
-import fake
-
-
-def foo():
-    builtins.input("testing")  # Ok
-
-
-async def foo():
-    builtins.input("testing")  # ASYNC250
-    fake.input("whatever")  # Ok
--- a/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_blind_except/BLE.py
@@ -154,11 +154,6 @@ try:
 except Exception as e:
    raise ValueError from e

-try:
-    ...
-except Exception as e:
-    raise e from ValueError("hello")
-

 try:
    pass
@@ -250,9 +245,3 @@ try:
    pass
 except (Exception, ValueError) as e:
    raise e
-
-# `from None` cause
-try:
-    pass
-except BaseException as e:
-    raise e from None
--- a/crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C417.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C417.py
@@ -75,7 +75,3 @@ list(map(lambda x, y: x, [(1, 2), (3, 4)]))
 _ = t"{set(map(lambda x: x % 2 == 0, nums))}"
 _ = t"{dict(map(lambda v: (v, v**2), nums))}"

-
-# See https://github.com/astral-sh/ruff/issues/20198
-# No error: lambda contains `yield`, so map() should not be rewritten
-map(lambda x: (yield x), [1, 2, 3])
--- a/crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C420_3.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_comprehensions/C420_3.py
@@ -1,43 +0,0 @@
-class C: a = None
-{C.a: None for C.a in "abc"}
-print(C.a)
-
-x = [None]
-{x[0]: None for x[0] in "abc"}
-print(x)
-
-class C(list):
-    def __getitem__(self, index, /):
-        item = super().__getitem__(index)
-        if isinstance(index, slice): item = tuple(item)
-        return item
-x = C()
-{x[:0]: None for x[:0] in "abc"}
-print(x)
-
-
-class C:
-    a = None
-
-def func():
-    {(C.a,): None for (C.a,) in "abc"}  # OK
-
-
-def func():
-    obj = type('obj', (), {'attr': 1})()
-    {(obj.attr,): None for (obj.attr,) in "abc"}  # OK
-
-
-def func():
-    lst = [1, 2, 3]
-    {(lst[0],): None for (lst[0],) in "abc"}  # OK
-
-
-def func():
-    lst = [1, 2, 3, 4, 5]
-    {(lst[1:3],): None for (lst[1:3],) in "abc"}  # OK
-
-
-# C420: side-effecting assignment targets
-# These should NOT trigger C420 because they have side-effecting assignment targets
-# See https://github.com/astral-sh/ruff/issues/19511
--- a/crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004.py
@@ -17,50 +17,3 @@ info(f"{__name__}")
 # Don't trigger for t-strings
 info(t"{name}")
 info(t"{__name__}")
-
-count = 5
-total = 9
-directory_path = "/home/hamir/ruff/crates/ruff_linter/resources/test/"
-logging.info(f"{count} out of {total} files in {directory_path} checked")
-
-
-
-x = 99
-fmt = "08d"
-logger.info(f"{x:{'08d'}}")
-logger.info(f"{x:>10} {x:{fmt}}")
-
-logging.info(f"")
-logging.info(f"This message doesn't have any variables.")
-
-obj = {"key": "value"}
-logging.info(f"Object: {obj!r}")
-
-items_count = 3
-logging.warning(f"Items: {items_count:d}")
-
-data = {"status": "active"}
-logging.info(f"Processing {len(data)} items")
-logging.info(f"Status: {data.get('status', 'unknown').upper()}")
-
-
-result = 123
-logging.info(f"Calculated result: {result + 100}")
-
-temperature = 123
-logging.info(f"Temperature: {temperature:.1f}°C")
-
-class FilePath:
-    def __init__(self, name: str):
-        self.name = name
-
-logging.info(f"No changes made to {file_path.name}.")
-
-user = "tron"
-balance = 123.45
-logging.error(f"Error {404}: User {user} has insufficient balance ${balance:.2f}")
-
-import logging
-
-x = 1
-logging.error(f"{x} -> %s", x)
--- a/crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004_arg_order.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_logging_format/G004_arg_order.py
@@ -1,10 +0,0 @@
-"""Test f-string argument order."""
-
-import logging
-
-logger = logging.getLogger(__name__)
-
-X = 1
-Y = 2
-logger.error(f"{X} -> %s", Y)
-logger.error(f"{Y} -> %s", X)
--- a/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT015.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT015.py
@@ -23,11 +23,3 @@ def test_error():
    assert list([])
    assert set(set())
    assert tuple("")
-
-# https://github.com/astral-sh/ruff/issues/19935
-def test_all_ok():
-    assert f"{b""}"
-    assert f"{""=}"
-    assert f"{""!a}"
-    assert f"{""!r}"
-    assert f"{"":1}"
--- a/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM905.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_simplify/SIM905.py
@@ -161,12 +161,3 @@ r"""first
 'no need' to escape
 "swap" quote style
 "use' ugly triple quotes""".split("\n")
-
-# https://github.com/astral-sh/ruff/issues/19845
-print("S\x1cP\x1dL\x1eI\x1fT".split())
-print("\x1c\x1d\x1e\x1f>".split(maxsplit=0))
-print("<\x1c\x1d\x1e\x1f".rsplit(maxsplit=0))
-
-# leading/trailing whitespace should not count towards maxsplit
-" a b c d ".split(maxsplit=2)  # ["a", "b", "c d "]
-" a b c d ".rsplit(maxsplit=2)  # [" a b", "c", "d"]
--- a/crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/PTH211.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/PTH211.py
@@ -13,11 +13,3 @@ Path("tmp/python").symlink_to("usr/bin/python", target_is_directory=True)  # Ok
 fd = os.open(".", os.O_RDONLY)
 os.symlink("source.txt", "link.txt", dir_fd=fd)  # Ok: dir_fd is not supported by pathlib
 os.close(fd)
-
-os.symlink(src="usr/bin/python", dst="tmp/python", unknown=True)
-os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=False)
-
-os.symlink(src="usr/bin/python", dst="tmp/python", dir_fd=None)
-
-os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory=     True    )
-os.symlink("usr/bin/python",  dst="tmp/python", target_is_directory="nonboolean")
--- a/crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/full_name.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_use_pathlib/full_name.py
@@ -106,22 +106,4 @@ os.replace("src", "dst", src_dir_fd=1)
 os.replace("src", "dst", dst_dir_fd=2)

 os.getcwd()
-os.getcwdb()
-
-os.mkdir(path="directory")
-
-os.mkdir(
-    # comment 1
-    "directory",
-    mode=0o777
-)
-
-os.mkdir("directory", mode=0o777, dir_fd=1)
-
-os.makedirs("name", 0o777, exist_ok=False)
-
-os.makedirs("name", 0o777, False)
-
-os.makedirs(name="name", mode=0o777, exist_ok=False)
-
-os.makedirs("name", unknown_kwarg=True)
+os.getcwdb()
--- a/crates/ruff_linter/resources/test/fixtures/isort/required_imports/docstring_with_multiple_continuations.py
+++ b/crates/ruff_linter/resources/test/fixtures/isort/required_imports/docstring_with_multiple_continuations.py
@@ -1,4 +0,0 @@
-"""Hello, world!"""\
-\
-
-x = 1; y = 2
--- a/crates/ruff_linter/resources/test/fixtures/perflint/PERF403.py
+++ b/crates/ruff_linter/resources/test/fixtures/perflint/PERF403.py
@@ -192,24 +192,3 @@ def issue_19005_3():
    c = {}
    for a[0], a[1] in ():
        c[a[0]] = a[1]
-
-
-def issue_19153_1():
-    v = {}
-    for o, (x,) in ["ox"]:
-        v[x,] = o
-    return v
-
-
-def issue_19153_2():
-    v = {}
-    for (o, p), x in [("op", "x")]:
-        v[x] = o, p
-    return v
-
-
-def issue_19153_3():
-    v = {}
-    for o, (x,) in ["ox"]: 
-        v[(x,)] = o 
-    return v
--- a/crates/ruff_linter/resources/test/fixtures/pycodestyle/E731.py
+++ b/crates/ruff_linter/resources/test/fixtures/pycodestyle/E731.py
@@ -190,12 +190,3 @@ foo_tooltip = (
    more

 )
-
-# https://github.com/astral-sh/ruff/issues/20097
-def scope():
-    from collections.abc import Callable
-    from typing import ParamSpec
-
-    P = ParamSpec("P")
-    f1: Callable[P, str] = lambda x: str(x)
-    f2: Callable[..., str] = lambda x: str(x)
--- a/crates/ruff_linter/resources/test/fixtures/pyflakes/F401_35.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyflakes/F401_35.py
@@ -1,16 +0,0 @@
-"""
-Test: allowed-unused-imports-top-level-module
-"""
-
-# No errors
-
-def f():
-    import hvplot
-def f():
-    import hvplot.pandas
-def f():
-    import hvplot.pandas.plots
-def f():
-    from hvplot.pandas import scatter_matrix
-def f():
-    from hvplot.pandas.plots import scatter_matrix
--- a/crates/ruff_linter/resources/test/fixtures/pyflakes/F841_0.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyflakes/F841_0.py
@@ -151,39 +151,3 @@ def f():
        pass
    except Exception as _:
        pass
-
-
-# OK, `__class__` in this case is not the special `__class__` cell, so we don't
-# emit a diagnostic. (It has its own special semantics -- see
-# https://github.com/astral-sh/ruff/pull/20048#discussion_r2298338048 -- but
-# those aren't relevant here.)
-class A:
-    __class__ = 1
-
-
-# The following three cases are flagged because they declare local `__class__`
-# variables that don't refer to the special `__class__` cell.
-class A:
-    def set_class(self, cls):
-        __class__ = cls  # F841
-
-
-class A:
-    class B:
-        def set_class(self, cls):
-            __class__ = cls  # F841
-
-
-class A:
-    def foo():
-        class B:
-            print(__class__)
-            def set_class(self, cls):
-                __class__ = cls  # F841
-
-
-# OK, the `__class__` cell is nonlocal and declared as such.
-class NonlocalDunderClass:
-    def foo():
-        nonlocal __class__
-        __class__ = 1
--- a/crates/ruff_linter/resources/test/fixtures/pylint/bidirectional_unicode.py
+++ b/crates/ruff_linter/resources/test/fixtures/pylint/bidirectional_unicode.py
@@ -4,9 +4,6 @@ print("שלום‬")
 # E2502
 example = "x‏" * 100  #    "‏x" is assigned

-# E2502
-another = "x؜" * 50  #    "؜x" is assigned
-
 # E2502
 if access_level != "none‮⁦":  # Check if admin ⁩⁦' and access_level != 'user
    print("You are an admin.")
--- a/crates/ruff_linter/resources/test/fixtures/pylint/nonlocal_without_binding.py
+++ b/crates/ruff_linter/resources/test/fixtures/pylint/nonlocal_without_binding.py
@@ -44,8 +44,3 @@ def f():
    def g():
        nonlocal x
        x = 2
-
-# OK
-class A:
-    def method(self):
-        nonlocal __class__
--- a/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP010_0.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP010_0.py
--- a/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP010_1.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP010_1.py
@@ -1,18 +0,0 @@
-from __future__ import nested_scopes, generators
-from __future__ import with_statement, unicode_literals
-
-from __future__ import absolute_import, division
-from __future__ import generator_stop
-from __future__ import print_function, nested_scopes, generator_stop
-
-print(with_statement)
-generators = 1
-
-
-class Foo():
-
-    def boo(self):
-        print(division)
-
-
-__all__ = ["print_function", "generator_stop"]
--- a/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP045.py
+++ b/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP045.py
@@ -69,10 +69,3 @@ a7: OptionalTE[typing.NamedTuple] = None
 a8: typing_extensions.Optional[typing.NamedTuple] = None
 a9: "Optional[NamedTuple]" = None
 a10: Optional[NamedTupleTE] = None
-
-
-# Test for: https://github.com/astral-sh/ruff/issues/19746
-# Nested Optional types should be flattened
-nested_optional: Optional[Optional[str]] = None
-nested_optional_typing: typing.Optional[Optional[int]] = None
-triple_nested_optional: Optional[Optional[Optional[str]]] = None
--- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py
+++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF026.py
@@ -118,10 +118,3 @@ def func():
        return lambda: value

    defaultdict(constant_factory("<missing>"))
-
-def func():
-    defaultdict(default_factory=t"")  # OK
-
-
-def func():
-    defaultdict(default_factory=t"hello")  # OK
--- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF033.py
+++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF033.py
@@ -124,19 +124,3 @@ def fun_with_python_syntax():
            ...

    return Foo
-
-
-@dataclass
-class C:
-    def __post_init__(self, x: tuple[int, ...] = (
-        1,
-        2,
-    )) -> None:
-        self.x = x
-
-
-@dataclass
-class D:
-    def __post_init__(self, x: int = """
-    """) -> None:
-        self.x = x
--- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF037.py
+++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF037.py
@@ -102,17 +102,3 @@ deque("abc") # OK
 deque(b"abc") # OK
 deque(f"" "a")  # OK
 deque(f"{x}" "")  # OK
-
-# https://github.com/astral-sh/ruff/issues/19951
-deque(t"")
-deque(t""  t"")
-deque(t"{""}") # OK
-
-# https://github.com/astral-sh/ruff/issues/20050
-deque(f"{""}")  # RUF037
-
-deque(f"{b""}")
-deque(f"{""=}")
-deque(f"{""!a}")
-deque(f"{""!r}")
-deque(f"{"":1}")
--- a/crates/ruff_linter/resources/test/fixtures/ruff/RUF064.py
+++ b/crates/ruff_linter/resources/test/fixtures/ruff/RUF064.py
@@ -51,11 +51,3 @@ dbm.ndbm.open("db", "r", 0o600)  # OK

 os.fchmod(0, 256)  # 0o400
 os.fchmod(0, 493)  # 0o755
-
-# https://github.com/astral-sh/ruff/issues/19010
-os.chmod("foo", 000)  # Error
-os.chmod("foo", 0000)  # Error
-
-os.chmod("foo", 0b0)  # Error
-os.chmod("foo", 0x0)  # Error
-os.chmod("foo", 0)  # Ok
--- a/crates/ruff_linter/resources/test/fixtures/syntax_errors/yield_from_in_async_function.py
+++ b/crates/ruff_linter/resources/test/fixtures/syntax_errors/yield_from_in_async_function.py
@@ -1 +0,0 @@
-async def f(): yield from x # error
--- a/crates/ruff_linter/src/checkers/ast/analyze/deferred_scopes.rs
+++ b/crates/ruff_linter/src/checkers/ast/analyze/deferred_scopes.rs
@@ -1,11 +1,10 @@
-use ruff_python_ast::PythonVersion;
 use ruff_python_semantic::{Binding, ScopeKind};

 use crate::checkers::ast::Checker;
 use crate::codes::Rule;
 use crate::rules::{
    flake8_builtins, flake8_pyi, flake8_type_checking, flake8_unused_arguments, pep8_naming,
-    pyflakes, pylint, pyupgrade, ruff,
+    pyflakes, pylint, ruff,
 };

 /// Run lint rules over all deferred scopes in the [`SemanticModel`].
@@ -46,7 +45,6 @@ pub(crate) fn deferred_scopes(checker: &Checker) {
        Rule::UnusedStaticMethodArgument,
        Rule::UnusedUnpackedVariable,
        Rule::UnusedVariable,
-        Rule::UnnecessaryFutureImport,
    ]) {
        return;
    }
@@ -226,11 +224,6 @@ pub(crate) fn deferred_scopes(checker: &Checker) {
            if checker.is_rule_enabled(Rule::UnusedImport) {
                pyflakes::rules::unused_import(checker, scope);
            }
-            if checker.is_rule_enabled(Rule::UnnecessaryFutureImport) {
-                if checker.target_version() >= PythonVersion::PY37 {
-                    pyupgrade::rules::unnecessary_future_import(checker, scope);
-                }
-            }

            if checker.is_rule_enabled(Rule::ImportPrivateName) {
                pylint::rules::import_private_name(checker, scope);
--- a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs
+++ b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs
@@ -660,9 +660,6 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
            if checker.is_rule_enabled(Rule::BlockingHttpCallInAsyncFunction) {
                flake8_async::rules::blocking_http_call(checker, call);
            }
-            if checker.is_rule_enabled(Rule::BlockingHttpCallHttpxInAsyncFunction) {
-                flake8_async::rules::blocking_http_call_httpx(checker, call);
-            }
            if checker.is_rule_enabled(Rule::BlockingOpenCallInAsyncFunction) {
                flake8_async::rules::blocking_open_call(checker, call);
            }
@@ -673,9 +670,6 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
            ]) {
                flake8_async::rules::blocking_process_invocation(checker, call);
            }
-            if checker.is_rule_enabled(Rule::BlockingInputInAsyncFunction) {
-                flake8_async::rules::blocking_input(checker, call);
-            }
            if checker.is_rule_enabled(Rule::BlockingSleepInAsyncFunction) {
                flake8_async::rules::blocking_sleep(checker, call);
            }
@@ -1045,6 +1039,8 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                flake8_simplify::rules::zip_dict_keys_and_values(checker, call);
            }
            if checker.any_rule_enabled(&[
+                Rule::OsMkdir,
+                Rule::OsMakedirs,
                Rule::OsStat,
                Rule::OsPathJoin,
                Rule::OsPathSplitext,
@@ -1052,6 +1048,7 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                Rule::PyPath,
                Rule::Glob,
                Rule::OsListdir,
+                Rule::OsSymlink,
            ]) {
                flake8_use_pathlib::rules::replaceable_by_pathlib(checker, call);
            }
@@ -1123,15 +1120,6 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                if checker.is_rule_enabled(Rule::OsPathSamefile) {
                    flake8_use_pathlib::rules::os_path_samefile(checker, call, segments);
                }
-                if checker.is_rule_enabled(Rule::OsMkdir) {
-                    flake8_use_pathlib::rules::os_mkdir(checker, call, segments);
-                }
-                if checker.is_rule_enabled(Rule::OsMakedirs) {
-                    flake8_use_pathlib::rules::os_makedirs(checker, call, segments);
-                }
-                if checker.is_rule_enabled(Rule::OsSymlink) {
-                    flake8_use_pathlib::rules::os_symlink(checker, call, segments);
-                }
                if checker.is_rule_enabled(Rule::PathConstructorCurrentDirectory) {
                    flake8_use_pathlib::rules::path_constructor_current_directory(
                        checker, call, segments,
@@ -1319,10 +1307,13 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                pylint::rules::yield_in_init(checker, expr);
            }
        }
-        Expr::YieldFrom(_) => {
+        Expr::YieldFrom(yield_from) => {
            if checker.is_rule_enabled(Rule::YieldInInit) {
                pylint::rules::yield_in_init(checker, expr);
            }
+            if checker.is_rule_enabled(Rule::YieldFromInAsyncFunction) {
+                pylint::rules::yield_from_in_async_function(checker, yield_from);
+            }
        }
        Expr::FString(f_string_expr @ ast::ExprFString { value, .. }) => {
            if checker.is_rule_enabled(Rule::FStringMissingPlaceholders) {
--- a/crates/ruff_linter/src/checkers/ast/analyze/statement.rs
+++ b/crates/ruff_linter/src/checkers/ast/analyze/statement.rs
@@ -728,6 +728,13 @@ pub(crate) fn statement(stmt: &Stmt, checker: &mut Checker) {
                    pylint::rules::non_ascii_module_import(checker, alias);
                }
            }
+            if checker.is_rule_enabled(Rule::UnnecessaryFutureImport) {
+                if checker.target_version() >= PythonVersion::PY37 {
+                    if let Some("__future__") = module {
+                        pyupgrade::rules::unnecessary_future_import(checker, stmt, names);
+                    }
+                }
+            }
            if checker.is_rule_enabled(Rule::DeprecatedMockImport) {
                pyupgrade::rules::deprecated_mock_import(checker, stmt);
            }
--- a/crates/ruff_linter/src/checkers/ast/mod.rs
+++ b/crates/ruff_linter/src/checkers/ast/mod.rs
@@ -28,7 +28,7 @@ use itertools::Itertools;
 use log::debug;
 use rustc_hash::{FxHashMap, FxHashSet};

-use ruff_db::diagnostic::{Annotation, Diagnostic, IntoDiagnosticMessage, Span};
+use ruff_db::diagnostic::Diagnostic;
 use ruff_diagnostics::{Applicability, Fix, IsolationLevel};
 use ruff_notebook::{CellOffsets, NotebookIndex};
 use ruff_python_ast::helpers::{collect_import_from_member, is_docstring_stmt, to_module_path};
@@ -71,9 +71,7 @@ use crate::registry::Rule;
 use crate::rules::pyflakes::rules::{
    LateFutureImport, ReturnOutsideFunction, YieldOutsideFunction,
 };
-use crate::rules::pylint::rules::{
-    AwaitOutsideAsync, LoadBeforeGlobalDeclaration, YieldFromInAsyncFunction,
-};
+use crate::rules::pylint::rules::{AwaitOutsideAsync, LoadBeforeGlobalDeclaration};
 use crate::rules::{flake8_pyi, flake8_type_checking, pyflakes, pyupgrade};
 use crate::settings::rule_table::RuleTable;
 use crate::settings::{LinterSettings, TargetVersion, flags};
@@ -670,12 +668,6 @@ impl SemanticSyntaxContext for Checker<'_> {
                    self.report_diagnostic(AwaitOutsideAsync, error.range);
                }
            }
-            SemanticSyntaxErrorKind::YieldFromInAsyncFunction => {
-                // PLE1700
-                if self.is_rule_enabled(Rule::YieldFromInAsyncFunction) {
-                    self.report_diagnostic(YieldFromInAsyncFunction, error.range);
-                }
-            }
            SemanticSyntaxErrorKind::ReboundComprehensionVariable
            | SemanticSyntaxErrorKind::DuplicateTypeParameter
            | SemanticSyntaxErrorKind::MultipleCaseAssignment(_)
@@ -692,7 +684,8 @@ impl SemanticSyntaxContext for Checker<'_> {
            | SemanticSyntaxErrorKind::LoadBeforeNonlocalDeclaration { .. }
            | SemanticSyntaxErrorKind::NonlocalAndGlobal(_)
            | SemanticSyntaxErrorKind::AnnotatedGlobal(_)
-            | SemanticSyntaxErrorKind::AnnotatedNonlocal(_) => {
+            | SemanticSyntaxErrorKind::AnnotatedNonlocal(_)
+            | SemanticSyntaxErrorKind::NoBindingForNonlocal(_) => {
                self.semantic_errors.borrow_mut().push(error);
            }
        }
@@ -711,10 +704,7 @@ impl SemanticSyntaxContext for Checker<'_> {
            match scope.kind {
                ScopeKind::Class(_) | ScopeKind::Lambda(_) => return false,
                ScopeKind::Function(ast::StmtFunctionDef { is_async, .. }) => return *is_async,
-                ScopeKind::Generator { .. }
-                | ScopeKind::Module
-                | ScopeKind::Type
-                | ScopeKind::DunderClassCell => {}
+                ScopeKind::Generator { .. } | ScopeKind::Module | ScopeKind::Type => {}
            }
        }
        false
@@ -725,10 +715,7 @@ impl SemanticSyntaxContext for Checker<'_> {
            match scope.kind {
                ScopeKind::Class(_) => return false,
                ScopeKind::Function(_) | ScopeKind::Lambda(_) => return true,
-                ScopeKind::Generator { .. }
-                | ScopeKind::Module
-                | ScopeKind::Type
-                | ScopeKind::DunderClassCell => {}
+                ScopeKind::Generator { .. } | ScopeKind::Module | ScopeKind::Type => {}
            }
        }
        false
@@ -739,7 +726,7 @@ impl SemanticSyntaxContext for Checker<'_> {
            match scope.kind {
                ScopeKind::Class(_) | ScopeKind::Generator { .. } => return false,
                ScopeKind::Function(_) | ScopeKind::Lambda(_) => return true,
-                ScopeKind::Module | ScopeKind::Type | ScopeKind::DunderClassCell => {}
+                ScopeKind::Module | ScopeKind::Type => {}
            }
        }
        false
@@ -1106,24 +1093,6 @@ impl<'a> Visitor<'a> for Checker<'a> {
                    }
                }

-                // Here we add the implicit scope surrounding a method which allows code in the
-                // method to access `__class__` at runtime. See the `ScopeKind::DunderClassCell`
-                // docs for more information.
-                let added_dunder_class_scope = if self.semantic.current_scope().kind.is_class() {
-                    self.semantic.push_scope(ScopeKind::DunderClassCell);
-                    let binding_id = self.semantic.push_binding(
-                        TextRange::default(),
-                        BindingKind::DunderClassCell,
-                        BindingFlags::empty(),
-                    );
-                    self.semantic
-                        .current_scope_mut()
-                        .add("__class__", binding_id);
-                    true
-                } else {
-                    false
-                };
-
                self.semantic.push_scope(ScopeKind::Type);

                if let Some(type_params) = type_params {
@@ -1187,9 +1156,6 @@ impl<'a> Visitor<'a> for Checker<'a> {
                self.semantic.pop_scope(); // Function scope
                self.semantic.pop_definition();
                self.semantic.pop_scope(); // Type parameter scope
-                if added_dunder_class_scope {
-                    self.semantic.pop_scope(); // `__class__` cell closure scope
-                }
                self.add_binding(
                    name,
                    stmt.identifier(),
@@ -3340,17 +3306,6 @@ impl DiagnosticGuard<'_, '_> {
            Err(err) => log::debug!("Failed to create fix for {}: {}", self.name(), err),
        }
    }
-
-    /// Add a secondary annotation with the given message and range.
-    pub(crate) fn secondary_annotation<'a>(
-        &mut self,
-        message: impl IntoDiagnosticMessage + 'a,
-        range: impl Ranged,
-    ) {
-        let span = Span::from(self.context.source_file.clone()).with_range(range.range());
-        let ann = Annotation::secondary(span).message(message);
-        self.diagnostic.as_mut().unwrap().annotate(ann);
-    }
 }

 impl std::ops::Deref for DiagnosticGuard<'_, '_> {
--- a/crates/ruff_linter/src/codes.rs
+++ b/crates/ruff_linter/src/codes.rs
@@ -336,12 +336,10 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
        (Flake8Async, "115") => (RuleGroup::Stable, rules::flake8_async::rules::AsyncZeroSleep),
        (Flake8Async, "116") => (RuleGroup::Preview, rules::flake8_async::rules::LongSleepNotForever),
        (Flake8Async, "210") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingHttpCallInAsyncFunction),
-        (Flake8Async, "212") => (RuleGroup::Preview, rules::flake8_async::rules::BlockingHttpCallHttpxInAsyncFunction),
        (Flake8Async, "220") => (RuleGroup::Stable, rules::flake8_async::rules::CreateSubprocessInAsyncFunction),
        (Flake8Async, "221") => (RuleGroup::Stable, rules::flake8_async::rules::RunProcessInAsyncFunction),
        (Flake8Async, "222") => (RuleGroup::Stable, rules::flake8_async::rules::WaitForProcessInAsyncFunction),
        (Flake8Async, "230") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingOpenCallInAsyncFunction),
-        (Flake8Async, "250") => (RuleGroup::Preview, rules::flake8_async::rules::BlockingInputInAsyncFunction),
        (Flake8Async, "251") => (RuleGroup::Stable, rules::flake8_async::rules::BlockingSleepInAsyncFunction),

        // flake8-builtins
@@ -923,8 +921,8 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
        // flake8-use-pathlib
        (Flake8UsePathlib, "100") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsPathAbspath),
        (Flake8UsePathlib, "101") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsChmod),
-        (Flake8UsePathlib, "102") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsMkdir),
-        (Flake8UsePathlib, "103") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsMakedirs),
+        (Flake8UsePathlib, "102") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::OsMkdir),
+        (Flake8UsePathlib, "103") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::OsMakedirs),
        (Flake8UsePathlib, "104") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsRename),
        (Flake8UsePathlib, "105") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsReplace),
        (Flake8UsePathlib, "106") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::OsRmdir),
@@ -956,7 +954,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
        (Flake8UsePathlib, "207") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::Glob),
        (Flake8UsePathlib, "208") => (RuleGroup::Stable, rules::flake8_use_pathlib::violations::OsListdir),
        (Flake8UsePathlib, "210") => (RuleGroup::Stable, rules::flake8_use_pathlib::rules::InvalidPathlibWithSuffix),
-        (Flake8UsePathlib, "211") => (RuleGroup::Preview, rules::flake8_use_pathlib::rules::OsSymlink),
+        (Flake8UsePathlib, "211") => (RuleGroup::Preview, rules::flake8_use_pathlib::violations::OsSymlink),

        // flake8-logging-format
        (Flake8LoggingFormat, "001") => (RuleGroup::Stable, rules::flake8_logging_format::violations::LoggingStringFormat),
--- a/crates/ruff_linter/src/fs.rs
+++ b/crates/ruff_linter/src/fs.rs
@@ -58,3 +58,13 @@ pub fn relativize_path<P: AsRef<Path>>(path: P) -> String {
    }
    format!("{}", path.display())
 }
+
+/// Convert an absolute path to be relative to the specified project root.
+pub fn relativize_path_to<P: AsRef<Path>, R: AsRef<Path>>(path: P, project_root: R) -> String {
+    format!(
+        "{}",
+        pathdiff::diff_paths(&path, project_root)
+            .expect("Could not diff paths")
+            .display()
+    )
+}
--- a/crates/ruff_linter/src/importer/insertion.rs
+++ b/crates/ruff_linter/src/importer/insertion.rs
@@ -63,9 +63,9 @@ impl<'a> Insertion<'a> {
                return Insertion::inline(" ", location.add(offset).add(TextSize::of(';')), ";");
            }

-            // While the first token after the docstring is a continuation character (i.e. "\"), advance
-            // additional rows to prevent inserting in the same logical line.
-            while match_continuation(locator.after(location)).is_some() {
+            // If the first token after the docstring is a continuation character (i.e. "\"), advance
+            // an additional row to prevent inserting in the same logical line.
+            if match_continuation(locator.after(location)).is_some() {
                location = locator.full_line_end(location);
            }

@@ -379,17 +379,6 @@ mod tests {
            Insertion::own_line("", TextSize::from(22), "\n")
        );

-        let contents = r#"
-"""Hello, world!"""\
-\
-
-"#
-        .trim_start();
-        assert_eq!(
-            insert(contents)?,
-            Insertion::own_line("", TextSize::from(24), "\n")
-        );
-
        let contents = r"
 x = 1
 "
--- a/crates/ruff_linter/src/linter.rs
+++ b/crates/ruff_linter/src/linter.rs
@@ -44,15 +44,44 @@ pub struct LinterResult {
    /// Flag indicating that the parsed source code does not contain any
    /// [`ParseError`]s
    has_valid_syntax: bool,
+    /// Flag indicating that the parsed source code does not contain any [`ParseError`]s,
+    /// [`UnsupportedSyntaxError`]s, or [`SemanticSyntaxError`]s.
+    has_no_syntax_errors: bool,
 }

 impl LinterResult {
+    /// Returns `true` if the parsed source code contains any [`ParseError`]s *or*
+    /// [`UnsupportedSyntaxError`]s.
+    ///
+    /// See [`LinterResult::has_invalid_syntax`] for a version specific to [`ParseError`]s.
+    pub fn has_syntax_errors(&self) -> bool {
+        !self.has_no_syntax_errors()
+    }
+
+    /// Returns `true` if the parsed source code does not contain any [`ParseError`]s *or*
+    /// [`UnsupportedSyntaxError`]s.
+    ///
+    /// See [`LinterResult::has_valid_syntax`] for a version specific to [`ParseError`]s.
+    pub fn has_no_syntax_errors(&self) -> bool {
+        self.has_valid_syntax() && self.has_no_syntax_errors
+    }
+
+    /// Returns `true` if the parsed source code is valid i.e., it has no [`ParseError`]s.
+    ///
+    /// Note that this does not include version-related [`UnsupportedSyntaxError`]s.
+    ///
+    /// See [`LinterResult::has_no_syntax_errors`] for a version that takes these into account.
+    pub fn has_valid_syntax(&self) -> bool {
+        self.has_valid_syntax
+    }
+
    /// Returns `true` if the parsed source code is invalid i.e., it has [`ParseError`]s.
    ///
-    /// Note that this does not include version-related [`UnsupportedSyntaxError`]s or
-    /// [`SemanticSyntaxError`]s.
+    /// Note that this does not include version-related [`UnsupportedSyntaxError`]s.
+    ///
+    /// See [`LinterResult::has_no_syntax_errors`] for a version that takes these into account.
    pub fn has_invalid_syntax(&self) -> bool {
-        !self.has_valid_syntax
+        !self.has_valid_syntax()
    }
 }

@@ -484,6 +513,7 @@ pub fn lint_only(

    LinterResult {
        has_valid_syntax: parsed.has_valid_syntax(),
+        has_no_syntax_errors: !diagnostics.iter().any(Diagnostic::is_invalid_syntax),
        diagnostics,
    }
 }
@@ -640,6 +670,7 @@ pub fn lint_fix<'a>(
            result: LinterResult {
                diagnostics,
                has_valid_syntax,
+                has_no_syntax_errors,
            },
            transformed,
            fixed,
@@ -1231,10 +1262,6 @@ mod tests {
    )]
    #[test_case(Rule::AwaitOutsideAsync, Path::new("await_outside_async_function.py"))]
    #[test_case(Rule::AwaitOutsideAsync, Path::new("async_comprehension.py"))]
-    #[test_case(
-        Rule::YieldFromInAsyncFunction,
-        Path::new("yield_from_in_async_function.py")
-    )]
    fn test_syntax_errors(rule: Rule, path: &Path) -> Result<()> {
        let snapshot = path.to_string_lossy().to_string();
        let path = Path::new("resources/test/fixtures/syntax_errors").join(path);
--- a/crates/ruff_linter/src/message/diff.rs
+++ b/crates/ruff_linter/src/message/diff.rs
@@ -0,0 +1,202 @@
+use std::fmt::{Display, Formatter};
+use std::num::NonZeroUsize;
+
+use colored::{Color, ColoredString, Colorize, Styles};
+use similar::{ChangeTag, TextDiff};
+
+use ruff_db::diagnostic::Diagnostic;
+use ruff_source_file::{OneIndexed, SourceFile};
+use ruff_text_size::{Ranged, TextRange, TextSize};
+
+use crate::text_helpers::ShowNonprinting;
+use crate::{Applicability, Fix};
+
+/// Renders a diff that shows the code fixes.
+///
+/// The implementation isn't fully fledged out and only used by tests. Before using in production, try
+/// * Improve layout
+/// * Replace tabs with spaces for a consistent experience across terminals
+/// * Replace zero-width whitespaces
+/// * Print a simpler diff if only a single line has changed
+/// * Compute the diff from the [`Edit`] because diff calculation is expensive.
+pub(super) struct Diff<'a> {
+    fix: &'a Fix,
+    source_code: &'a SourceFile,
+}
+
+impl<'a> Diff<'a> {
+    pub(crate) fn from_message(message: &'a Diagnostic) -> Option<Diff<'a>> {
+        message.fix().map(|fix| Diff {
+            source_code: message.expect_ruff_source_file(),
+            fix,
+        })
+    }
+}
+
+impl Display for Diff<'_> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        // TODO(dhruvmanila): Add support for Notebook cells once it's user-facing
+        let mut output = String::with_capacity(self.source_code.source_text().len());
+        let mut last_end = TextSize::default();
+
+        for edit in self.fix.edits() {
+            output.push_str(
+                self.source_code
+                    .slice(TextRange::new(last_end, edit.start())),
+            );
+            output.push_str(edit.content().unwrap_or_default());
+            last_end = edit.end();
+        }
+
+        output.push_str(&self.source_code.source_text()[usize::from(last_end)..]);
+
+        let diff = TextDiff::from_lines(self.source_code.source_text(), &output);
+
+        let message = match self.fix.applicability() {
+            // TODO(zanieb): Adjust this messaging once it's user-facing
+            Applicability::Safe => "Safe fix",
+            Applicability::Unsafe => "Unsafe fix",
+            Applicability::DisplayOnly => "Display-only fix",
+        };
+        writeln!(f, "ℹ {}", message.blue())?;
+
+        let (largest_old, largest_new) = diff
+            .ops()
+            .last()
+            .map(|op| (op.old_range().start, op.new_range().start))
+            .unwrap_or_default();
+
+        let digit_with =
+            calculate_print_width(OneIndexed::from_zero_indexed(largest_new.max(largest_old)));
+
+        for (idx, group) in diff.grouped_ops(3).iter().enumerate() {
+            if idx > 0 {
+                writeln!(f, "{:-^1$}", "-", 80)?;
+            }
+            for op in group {
+                for change in diff.iter_inline_changes(op) {
+                    let sign = match change.tag() {
+                        ChangeTag::Delete => "-",
+                        ChangeTag::Insert => "+",
+                        ChangeTag::Equal => " ",
+                    };
+
+                    let line_style = LineStyle::from(change.tag());
+
+                    let old_index = change.old_index().map(OneIndexed::from_zero_indexed);
+                    let new_index = change.new_index().map(OneIndexed::from_zero_indexed);
+
+                    write!(
+                        f,
+                        "{} {} |{}",
+                        Line {
+                            index: old_index,
+                            width: digit_with
+                        },
+                        Line {
+                            index: new_index,
+                            width: digit_with
+                        },
+                        line_style.apply_to(sign).bold()
+                    )?;
+
+                    for (emphasized, value) in change.iter_strings_lossy() {
+                        let value = value.show_nonprinting();
+                        if emphasized {
+                            write!(f, "{}", line_style.apply_to(&value).underline().on_black())?;
+                        } else {
+                            write!(f, "{}", line_style.apply_to(&value))?;
+                        }
+                    }
+                    if change.missing_newline() {
+                        writeln!(f)?;
+                    }
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+struct LineStyle {
+    fgcolor: Option<Color>,
+    style: Option<Styles>,
+}
+
+impl LineStyle {
+    fn apply_to(&self, input: &str) -> ColoredString {
+        let mut colored = ColoredString::from(input);
+        if let Some(color) = self.fgcolor {
+            colored = colored.color(color);
+        }
+
+        if let Some(style) = self.style {
+            match style {
+                Styles::Clear => colored.clear(),
+                Styles::Bold => colored.bold(),
+                Styles::Dimmed => colored.dimmed(),
+                Styles::Underline => colored.underline(),
+                Styles::Reversed => colored.reversed(),
+                Styles::Italic => colored.italic(),
+                Styles::Blink => colored.blink(),
+                Styles::Hidden => colored.hidden(),
+                Styles::Strikethrough => colored.strikethrough(),
+            }
+        } else {
+            colored
+        }
+    }
+}
+
+impl From<ChangeTag> for LineStyle {
+    fn from(value: ChangeTag) -> Self {
+        match value {
+            ChangeTag::Equal => LineStyle {
+                fgcolor: None,
+                style: Some(Styles::Dimmed),
+            },
+            ChangeTag::Delete => LineStyle {
+                fgcolor: Some(Color::Red),
+                style: None,
+            },
+            ChangeTag::Insert => LineStyle {
+                fgcolor: Some(Color::Green),
+                style: None,
+            },
+        }
+    }
+}
+
+struct Line {
+    index: Option<OneIndexed>,
+    width: NonZeroUsize,
+}
+
+impl Display for Line {
+    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
+        match self.index {
+            None => {
+                for _ in 0..self.width.get() {
+                    f.write_str(" ")?;
+                }
+                Ok(())
+            }
+            Some(idx) => write!(f, "{:<width$}", idx, width = self.width.get()),
+        }
+    }
+}
+
+/// Calculate the length of the string representation of `value`
+pub(super) fn calculate_print_width(mut value: OneIndexed) -> NonZeroUsize {
+    const TEN: OneIndexed = OneIndexed::from_zero_indexed(9);
+
+    let mut width = OneIndexed::ONE;
+
+    while value >= TEN {
+        value = OneIndexed::new(value.get() / 10).unwrap_or(OneIndexed::MIN);
+        width = width.checked_add(1).unwrap();
+    }
+
+    width
+}
--- a/crates/ruff_linter/src/message/gitlab.rs
+++ b/crates/ruff_linter/src/message/gitlab.rs
@@ -0,0 +1,180 @@
+use std::collections::HashSet;
+use std::collections::hash_map::DefaultHasher;
+use std::hash::{Hash, Hasher};
+use std::io::Write;
+
+use serde::ser::SerializeSeq;
+use serde::{Serialize, Serializer};
+use serde_json::json;
+
+use ruff_db::diagnostic::Diagnostic;
+
+use crate::fs::{relativize_path, relativize_path_to};
+use crate::message::{Emitter, EmitterContext};
+
+/// Generate JSON with violations in GitLab CI format
+//  https://docs.gitlab.com/ee/ci/testing/code_quality.html#implement-a-custom-tool
+pub struct GitlabEmitter {
+    project_dir: Option<String>,
+}
+
+impl Default for GitlabEmitter {
+    fn default() -> Self {
+        Self {
+            project_dir: std::env::var("CI_PROJECT_DIR").ok(),
+        }
+    }
+}
+
+impl Emitter for GitlabEmitter {
+    fn emit(
+        &mut self,
+        writer: &mut dyn Write,
+        diagnostics: &[Diagnostic],
+        context: &EmitterContext,
+    ) -> anyhow::Result<()> {
+        serde_json::to_writer_pretty(
+            writer,
+            &SerializedMessages {
+                diagnostics,
+                context,
+                project_dir: self.project_dir.as_deref(),
+            },
+        )?;
+
+        Ok(())
+    }
+}
+
+struct SerializedMessages<'a> {
+    diagnostics: &'a [Diagnostic],
+    context: &'a EmitterContext<'a>,
+    project_dir: Option<&'a str>,
+}
+
+impl Serialize for SerializedMessages<'_> {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut s = serializer.serialize_seq(Some(self.diagnostics.len()))?;
+        let mut fingerprints = HashSet::<u64>::with_capacity(self.diagnostics.len());
+
+        for diagnostic in self.diagnostics {
+            let filename = diagnostic.expect_ruff_filename();
+
+            let (start_location, end_location) = if self.context.is_notebook(&filename) {
+                // We can't give a reasonable location for the structured formats,
+                // so we show one that's clearly a fallback
+                Default::default()
+            } else {
+                (
+                    diagnostic.expect_ruff_start_location(),
+                    diagnostic.expect_ruff_end_location(),
+                )
+            };
+
+            let path = self.project_dir.as_ref().map_or_else(
+                || relativize_path(&filename),
+                |project_dir| relativize_path_to(&filename, project_dir),
+            );
+
+            let mut message_fingerprint = fingerprint(diagnostic, &path, 0);
+
+            // Make sure that we do not get a fingerprint that is already in use
+            // by adding in the previously generated one.
+            while fingerprints.contains(&message_fingerprint) {
+                message_fingerprint = fingerprint(diagnostic, &path, message_fingerprint);
+            }
+            fingerprints.insert(message_fingerprint);
+
+            let (description, check_name) = if let Some(code) = diagnostic.secondary_code() {
+                (diagnostic.body().to_string(), code.as_str())
+            } else {
+                let description = diagnostic.body();
+                let description_without_prefix = description
+                    .strip_prefix("SyntaxError: ")
+                    .unwrap_or(description);
+
+                (description_without_prefix.to_string(), "syntax-error")
+            };
+
+            let value = json!({
+                "check_name": check_name,
+                "description": description,
+                "severity": "major",
+                "fingerprint": format!("{:x}", message_fingerprint),
+                "location": {
+                    "path": path,
+                    "positions": {
+                        "begin": start_location,
+                        "end": end_location,
+                    },
+                },
+            });
+
+            s.serialize_element(&value)?;
+        }
+
+        s.end()
+    }
+}
+
+/// Generate a unique fingerprint to identify a violation.
+fn fingerprint(message: &Diagnostic, project_path: &str, salt: u64) -> u64 {
+    let mut hasher = DefaultHasher::new();
+
+    salt.hash(&mut hasher);
+    message.name().hash(&mut hasher);
+    project_path.hash(&mut hasher);
+
+    hasher.finish()
+}
+
+#[cfg(test)]
+mod tests {
+    use insta::assert_snapshot;
+
+    use crate::message::GitlabEmitter;
+    use crate::message::tests::{
+        capture_emitter_output, create_diagnostics, create_syntax_error_diagnostics,
+    };
+
+    #[test]
+    fn output() {
+        let mut emitter = GitlabEmitter::default();
+        let content = capture_emitter_output(&mut emitter, &create_diagnostics());
+
+        assert_snapshot!(redact_fingerprint(&content));
+    }
+
+    #[test]
+    fn syntax_errors() {
+        let mut emitter = GitlabEmitter::default();
+        let content = capture_emitter_output(&mut emitter, &create_syntax_error_diagnostics());
+
+        assert_snapshot!(redact_fingerprint(&content));
+    }
+
+    // Redact the fingerprint because the default hasher isn't stable across platforms.
+    fn redact_fingerprint(content: &str) -> String {
+        static FINGERPRINT_HAY_KEY: &str = r#""fingerprint": ""#;
+
+        let mut output = String::with_capacity(content.len());
+        let mut last = 0;
+
+        for (start, _) in content.match_indices(FINGERPRINT_HAY_KEY) {
+            let fingerprint_hash_start = start + FINGERPRINT_HAY_KEY.len();
+            output.push_str(&content[last..fingerprint_hash_start]);
+            output.push_str("<redacted>");
+            last = fingerprint_hash_start
+                + content[fingerprint_hash_start..]
+                    .find('"')
+                    .expect("Expected terminating quote");
+        }
+
+        output.push_str(&content[last..]);
+
+        output
+    }
+}
--- a/crates/ruff_linter/src/message/grouped.rs
+++ b/crates/ruff_linter/src/message/grouped.rs
@@ -1,4 +1,3 @@
-use std::collections::BTreeMap;
 use std::fmt::{Display, Formatter};
 use std::io::Write;
 use std::num::NonZeroUsize;
@@ -7,15 +6,18 @@ use colored::Colorize;

 use ruff_db::diagnostic::Diagnostic;
 use ruff_notebook::NotebookIndex;
-use ruff_source_file::{LineColumn, OneIndexed};
+use ruff_source_file::OneIndexed;

 use crate::fs::relativize_path;
-use crate::message::{Emitter, EmitterContext};
+use crate::message::diff::calculate_print_width;
+use crate::message::text::{MessageCodeFrame, RuleCodeAndBody};
+use crate::message::{Emitter, EmitterContext, MessageWithLocation, group_diagnostics_by_filename};
 use crate::settings::types::UnsafeFixes;

 #[derive(Default)]
 pub struct GroupedEmitter {
    show_fix_status: bool,
+    show_source: bool,
    unsafe_fixes: UnsafeFixes,
 }

@@ -26,6 +28,12 @@ impl GroupedEmitter {
        self
    }

+    #[must_use]
+    pub fn with_show_source(mut self, show_source: bool) -> Self {
+        self.show_source = show_source;
+        self
+    }
+
    #[must_use]
    pub fn with_unsafe_fixes(mut self, unsafe_fixes: UnsafeFixes) -> Self {
        self.unsafe_fixes = unsafe_fixes;
@@ -52,8 +60,8 @@ impl Emitter for GroupedEmitter {
                max_column_length = max_column_length.max(message.start_location.column);
            }

-            let row_length = max_row_length.digits();
-            let column_length = max_column_length.digits();
+            let row_length = calculate_print_width(max_row_length);
+            let column_length = calculate_print_width(max_column_length);

            // Print the filename.
            writeln!(writer, "{}:", relativize_path(&*filename).underline())?;
@@ -68,53 +76,29 @@ impl Emitter for GroupedEmitter {
                        message,
                        show_fix_status: self.show_fix_status,
                        unsafe_fixes: self.unsafe_fixes,
+                        show_source: self.show_source,
                        row_length,
                        column_length,
                    }
                )?;
            }

-            // Print a blank line between files.
-            writeln!(writer)?;
+            // Print a blank line between files, unless we're showing the source, in which case
+            // we'll have already printed a blank line between messages.
+            if !self.show_source {
+                writeln!(writer)?;
+            }
        }

        Ok(())
    }
 }

-struct MessageWithLocation<'a> {
-    message: &'a Diagnostic,
-    start_location: LineColumn,
-}
-
-impl std::ops::Deref for MessageWithLocation<'_> {
-    type Target = Diagnostic;
-
-    fn deref(&self) -> &Self::Target {
-        self.message
-    }
-}
-
-fn group_diagnostics_by_filename(
-    diagnostics: &[Diagnostic],
-) -> BTreeMap<String, Vec<MessageWithLocation<'_>>> {
-    let mut grouped_messages = BTreeMap::default();
-    for diagnostic in diagnostics {
-        grouped_messages
-            .entry(diagnostic.expect_ruff_filename())
-            .or_insert_with(Vec::new)
-            .push(MessageWithLocation {
-                message: diagnostic,
-                start_location: diagnostic.expect_ruff_start_location(),
-            });
-    }
-    grouped_messages
-}
-
 struct DisplayGroupedMessage<'a> {
    message: MessageWithLocation<'a>,
    show_fix_status: bool,
    unsafe_fixes: UnsafeFixes,
+    show_source: bool,
    row_length: NonZeroUsize,
    column_length: NonZeroUsize,
    notebook_index: Option<&'a NotebookIndex>,
@@ -130,7 +114,8 @@ impl Display for DisplayGroupedMessage<'_> {
        write!(
            f,
            "  {row_padding}",
-            row_padding = " ".repeat(self.row_length.get() - start_location.line.digits().get())
+            row_padding = " "
+                .repeat(self.row_length.get() - calculate_print_width(start_location.line).get())
        )?;

        // Check if we're working on a jupyter notebook and translate positions with cell accordingly
@@ -157,8 +142,9 @@ impl Display for DisplayGroupedMessage<'_> {
            f,
            "{row}{sep}{col}{col_padding} {code_and_body}",
            sep = ":".cyan(),
-            col_padding =
-                " ".repeat(self.column_length.get() - start_location.column.digits().get()),
+            col_padding = " ".repeat(
+                self.column_length.get() - calculate_print_width(start_location.column).get()
+            ),
            code_and_body = RuleCodeAndBody {
                message,
                show_fix_status: self.show_fix_status,
@@ -166,50 +152,51 @@ impl Display for DisplayGroupedMessage<'_> {
            },
        )?;

+        if self.show_source {
+            use std::fmt::Write;
+            let mut padded = PadAdapter::new(f);
+            writeln!(
+                padded,
+                "{}",
+                MessageCodeFrame {
+                    message,
+                    notebook_index: self.notebook_index
+                }
+            )?;
+        }
+
        Ok(())
    }
 }

-pub(super) struct RuleCodeAndBody<'a> {
-    pub(crate) message: &'a Diagnostic,
-    pub(crate) show_fix_status: bool,
-    pub(crate) unsafe_fixes: UnsafeFixes,
+/// Adapter that adds a '  ' at the start of every line without the need to copy the string.
+/// Inspired by Rust's `debug_struct()` internal implementation that also uses a `PadAdapter`.
+struct PadAdapter<'buf> {
+    buf: &'buf mut (dyn std::fmt::Write + 'buf),
+    on_newline: bool,
 }

-impl Display for RuleCodeAndBody<'_> {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        if self.show_fix_status {
-            if let Some(fix) = self.message.fix() {
-                // Do not display an indicator for inapplicable fixes
-                if fix.applies(self.unsafe_fixes.required_applicability()) {
-                    if let Some(code) = self.message.secondary_code() {
-                        write!(f, "{} ", code.red().bold())?;
-                    }
-                    return write!(
-                        f,
-                        "{fix}{body}",
-                        fix = format_args!("[{}] ", "*".cyan()),
-                        body = self.message.body(),
-                    );
-                }
+impl<'buf> PadAdapter<'buf> {
+    fn new(buf: &'buf mut (dyn std::fmt::Write + 'buf)) -> Self {
+        Self {
+            buf,
+            on_newline: true,
+        }
+    }
+}
+
+impl std::fmt::Write for PadAdapter<'_> {
+    fn write_str(&mut self, s: &str) -> std::fmt::Result {
+        for s in s.split_inclusive('\n') {
+            if self.on_newline {
+                self.buf.write_str("  ")?;
            }
+
+            self.on_newline = s.ends_with('\n');
+            self.buf.write_str(s)?;
        }

-        if let Some(code) = self.message.secondary_code() {
-            write!(
-                f,
-                "{code} {body}",
-                code = code.red().bold(),
-                body = self.message.body(),
-            )
-        } else {
-            write!(
-                f,
-                "{code}: {body}",
-                code = self.message.id().as_str().red().bold(),
-                body = self.message.body(),
-            )
-        }
+        Ok(())
    }
 }

@@ -239,9 +226,19 @@ mod tests {
        assert_snapshot!(content);
    }

+    #[test]
+    fn show_source() {
+        let mut emitter = GroupedEmitter::default().with_show_source(true);
+        let content = capture_emitter_output(&mut emitter, &create_diagnostics());
+
+        assert_snapshot!(content);
+    }
+
    #[test]
    fn fix_status() {
-        let mut emitter = GroupedEmitter::default().with_show_fix_status(true);
+        let mut emitter = GroupedEmitter::default()
+            .with_show_fix_status(true)
+            .with_show_source(true);
        let content = capture_emitter_output(&mut emitter, &create_diagnostics());

        assert_snapshot!(content);
@@ -251,6 +248,7 @@ mod tests {
    fn fix_status_unsafe() {
        let mut emitter = GroupedEmitter::default()
            .with_show_fix_status(true)
+            .with_show_source(true)
            .with_unsafe_fixes(UnsafeFixes::Enabled);
        let content = capture_emitter_output(&mut emitter, &create_diagnostics());

--- a/crates/ruff_linter/src/message/mod.rs
+++ b/crates/ruff_linter/src/message/mod.rs
@@ -1,5 +1,7 @@
+use std::collections::BTreeMap;
 use std::fmt::Display;
 use std::io::Write;
+use std::ops::Deref;

 use rustc_hash::FxHashMap;

@@ -10,9 +12,10 @@ use ruff_db::diagnostic::{
 use ruff_db::files::File;

 pub use github::GithubEmitter;
+pub use gitlab::GitlabEmitter;
 pub use grouped::GroupedEmitter;
 use ruff_notebook::NotebookIndex;
-use ruff_source_file::SourceFile;
+use ruff_source_file::{LineColumn, SourceFile};
 use ruff_text_size::{Ranged, TextRange, TextSize};
 pub use sarif::SarifEmitter;
 pub use text::TextEmitter;
@@ -20,7 +23,9 @@ pub use text::TextEmitter;
 use crate::Fix;
 use crate::registry::Rule;

+mod diff;
 mod github;
+mod gitlab;
 mod grouped;
 mod sarif;
 mod text;
@@ -129,6 +134,35 @@ impl FileResolver for EmitterContext<'_> {
    }
 }

+struct MessageWithLocation<'a> {
+    message: &'a Diagnostic,
+    start_location: LineColumn,
+}
+
+impl Deref for MessageWithLocation<'_> {
+    type Target = Diagnostic;
+
+    fn deref(&self) -> &Self::Target {
+        self.message
+    }
+}
+
+fn group_diagnostics_by_filename(
+    diagnostics: &[Diagnostic],
+) -> BTreeMap<String, Vec<MessageWithLocation<'_>>> {
+    let mut grouped_messages = BTreeMap::default();
+    for diagnostic in diagnostics {
+        grouped_messages
+            .entry(diagnostic.expect_ruff_filename())
+            .or_insert_with(Vec::new)
+            .push(MessageWithLocation {
+                message: diagnostic,
+                start_location: diagnostic.expect_ruff_start_location(),
+            });
+    }
+    grouped_messages
+}
+
 /// Display format for [`Diagnostic`]s.
 ///
 /// The emitter serializes a slice of [`Diagnostic`]s and writes them to a [`Write`].
--- a/crates/ruff_linter/src/message/snapshots/ruff_lintermessagegitlabtestsoutput.snap
+++ b/crates/ruff_linter/src/message/snapshots/ruff_lintermessagegitlabtestsoutput.snap
@@ -0,0 +1,63 @@
+---
+source: crates/ruff_linter/src/message/gitlab.rs
+expression: redact_fingerprint(&content)
+---
+[
+  {
+    "check_name": "F401",
+    "description": "`os` imported but unused",
+    "fingerprint": "<redacted>",
+    "location": {
+      "path": "fib.py",
+      "positions": {
+        "begin": {
+          "column": 8,
+          "line": 1
+        },
+        "end": {
+          "column": 10,
+          "line": 1
+        }
+      }
+    },
+    "severity": "major"
+  },
+  {
+    "check_name": "F841",
+    "description": "Local variable `x` is assigned to but never used",
+    "fingerprint": "<redacted>",
+    "location": {
+      "path": "fib.py",
+      "positions": {
+        "begin": {
+          "column": 5,
+          "line": 6
+        },
+        "end": {
+          "column": 6,
+          "line": 6
+        }
+      }
+    },
+    "severity": "major"
+  },
+  {
+    "check_name": "F821",
+    "description": "Undefined name `a`",
+    "fingerprint": "<redacted>",
+    "location": {
+      "path": "undef.py",
+      "positions": {
+        "begin": {
+          "column": 4,
+          "line": 1
+        },
+        "end": {
+          "column": 5,
+          "line": 1
+        }
+      }
+    },
+    "severity": "major"
+  }
+]
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Jack O'Connor	abe6a36c80	don't do nested bindings inference if we have a declared type	2025-08-08 15:54:56 -07:00
Jack O'Connor	b82bbcd51c	stop tracking implicit (read-only) free variables	2025-08-08 13:22:01 -07:00
Jack O'Connor	56e550176c	addressing some of Micha's comments	2025-08-08 09:05:50 -07:00
Jack O'Connor	a6569ed960	[ty] add nested bindings to the semantic index	2025-08-07 20:39:10 -07:00