Remove pydantic.BaseModel from defaults

Tweak interfaces to take Context
Merge branch 'main' into sasanjac/2195-Implement-configuration-options-from-flake8-type-checking
2023-03-05 18:21:34 -05:00 · 2023-03-05 18:17:49 -05:00 · 2023-03-05 18:05:53 -05:00 · 2023-03-03 09:08:30 +01:00 · 2023-03-03 09:08:30 +01:00 · 2023-03-03 09:07:40 +01:00
1260 changed files with 16527 additions and 28431 deletions
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,6 +1,5 @@
 [alias]
 dev = "run --package ruff_dev --bin ruff_dev"
-benchmark = "bench -p ruff_benchmark --"

 [target.'cfg(all())']
 rustflags = [
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,11 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-      day: "monday"
-      time: "12:00"
-      timezone: "America/New_York"
-    commit-message:
-      prefix: "ci(deps)"
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -17,6 +17,20 @@ env:
  RUSTUP_MAX_RETRIES: 10

 jobs:
+  cargo-build:
+    name: "cargo build"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - uses: Swatinem/rust-cache@v1
+      - run: cargo build --all
+      - run: ./target/debug/ruff_dev generate-all
+      - run: git diff --quiet README.md || echo "::error file=README.md::This file is outdated. Run 'cargo dev generate-all'."
+      - run: git diff --quiet ruff.schema.json || echo "::error file=ruff.schema.json::This file is outdated. Run 'cargo dev generate-all'."
+      - run: git diff --exit-code -- README.md ruff.schema.json docs
+
  cargo-fmt:
    name: "cargo fmt"
    runs-on: ubuntu-latest
@@ -34,7 +48,7 @@ jobs:
      - name: "Install Rust toolchain"
        run: |
          rustup component add clippy
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@v1
      - run: cargo clippy --workspace --all-targets --all-features -- -D warnings

  cargo-clippy-wasm:
@@ -46,8 +60,8 @@ jobs:
        run: |
          rustup component add clippy
          rustup target add wasm32-unknown-unknown
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo clippy -p ruff_wasm --target wasm32-unknown-unknown --all-features -- -D warnings
+      - uses: Swatinem/rust-cache@v1
+      - run: cargo clippy -p ruff --target wasm32-unknown-unknown --all-features -- -D warnings

  cargo-test:
    strategy:
@@ -59,9 +73,9 @@ jobs:
      - uses: actions/checkout@v3
      - name: "Install Rust toolchain"
        run: rustup show
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@v1
      - run: cargo install cargo-insta
-      - run: pip install black[d]==23.1.0
+      - run: pip install black[d]==22.12.0
      - name: "Run tests (Ubuntu)"
        if: ${{ matrix.os == 'ubuntu-latest' }}
        run: |
@@ -79,30 +93,6 @@ jobs:
        env:
          # Setting RUSTDOCFLAGS because `cargo doc --check` isn't yet implemented (https://github.com/rust-lang/cargo/issues/10025).
          RUSTDOCFLAGS: "-D warnings"
-      - uses: actions/upload-artifact@v3
-        with:
-          name: ruff
-          path: target/debug/ruff
-
-
-  cargo-test-wasm:
-    runs-on: ubuntu-latest
-    name: "cargo test (wasm)"
-    steps:
-      - uses: actions/checkout@v3
-      - name: "Install Rust toolchain"
-        run: rustup target add wasm32-unknown-unknown
-      - uses: actions/setup-node@v3
-        with:
-          node-version: 18
-          cache: "npm"
-          cache-dependency-path: playground/package-lock.json
-      - uses: jetli/wasm-pack-action@v0.4.0
-      - uses: Swatinem/rust-cache@v2
-      - name: "Run wasm-pack"
-        run: |
-          cd crates/ruff_wasm
-          wasm-pack test --node

  scripts:
    name: "test scripts"
@@ -111,7 +101,7 @@ jobs:
      - uses: actions/checkout@v3
      - name: "Install Rust toolchain"
        run: rustup show
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@v1
      - run: ./scripts/add_rule.py --name DoTheThing --code PLC999 --linter pylint
      - run: cargo check
      - run: |
@@ -127,39 +117,3 @@ jobs:
      - uses: crate-ci/typos@master
        with:
          files: .
-
-  ecosystem:
-    name: "ecosystem"
-    runs-on: ubuntu-latest
-    needs: cargo-test
-    # Only runs on pull requests, since that is the only we way we can find the base version for comparison.
-    if: github.event_name == 'pull_request'
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
-        with:
-          python-version: "3.11"
-      - uses: actions/download-artifact@v3
-        id: ruff-target
-        with:
-          name: ruff
-          path: target/debug
-      - uses: dawidd6/action-download-artifact@v2
-        with:
-          name: ruff
-          branch: ${{ github.event.pull_request.base.ref }}
-          check_artifacts: true
-      - name: Run ecosystem check
-        run: |
-          # Make executable, since artifact download doesn't preserve this
-          chmod +x ruff ${{ steps.ruff-target.outputs.download-path }}/ruff
-
-          scripts/check_ecosystem.py ruff ${{ steps.ruff-target.outputs.download-path }}/ruff | tee ecosystem-result
-
-          echo ${{ github.event.number }} > pr-number
-      - uses: actions/upload-artifact@v3
-        with:
-          name: ecosystem-result
-          path: |
-            ecosystem-result
-            pr-number
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -15,7 +15,7 @@ jobs:
      - uses: actions/setup-python@v4
      - name: "Install Rust toolchain"
        run: rustup show
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@v1
      - name: "Install dependencies"
        run: |
          pip install -r docs/requirements.txt
--- a/.github/workflows/ecosystem-comment.yaml
+++ b/.github/workflows/ecosystem-comment.yaml
@@ -1,31 +0,0 @@
-on:
-  workflow_run:
-    workflows: [CI]
-    types: [completed]
-
-permissions:
-  pull-requests: write
-
-jobs:
-  comment:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: dawidd6/action-download-artifact@v2
-        id: download-result
-        with:
-          name: ecosystem-result
-          workflow: ci.yaml
-          run_id: ${{ github.event.workflow_run.id }}
-          if_no_artifact_found: ignore
-      - if: steps.download-result.outputs.found_artifact
-        id: result
-        run: |
-          echo "pr-number=$(<pr-number)" >> $GITHUB_OUTPUT
-      - name: Create comment
-        if: steps.download-result.outputs.found_artifact
-        uses: thollander/actions-comment-pull-request@v2
-        with:
-          pr_number: ${{ steps.result.outputs.pr-number }}
-          filePath: ecosystem-result
-          comment_tag: ecosystem-results
--- a/.github/workflows/flake8-to-ruff.yaml
+++ b/.github/workflows/flake8-to-ruff.yaml
@@ -133,7 +133,7 @@ jobs:
          target: ${{ matrix.target }}
          manylinux: auto
          args: --no-default-features --release --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
-      - uses: uraimo/run-on-arch-action@v2
+      - uses: uraimo/run-on-arch-action@v2.5.0
        if: matrix.target != 'ppc64'
        name: Install built wheel
        with:
@@ -206,7 +206,7 @@ jobs:
          target: ${{ matrix.platform.target }}
          manylinux: musllinux_1_2
          args: --release --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
-      - uses: uraimo/run-on-arch-action@v2
+      - uses: uraimo/run-on-arch-action@master
        name: Install built wheel
        with:
          arch: ${{ matrix.platform.arch }}
--- a/.github/workflows/playground.yaml
+++ b/.github/workflows/playground.yaml
@@ -28,7 +28,7 @@ jobs:
      - uses: jetli/wasm-pack-action@v0.4.0
      - uses: jetli/wasm-bindgen-action@v0.2.0
      - name: "Run wasm-pack"
-        run: wasm-pack build --target web --out-dir ../../playground/src/pkg crates/ruff_wasm
+        run: wasm-pack build --target web --out-dir ../../playground/src/pkg crates/ruff
      - name: "Install Node dependencies"
        run: npm ci
        working-directory: playground
--- a/.github/workflows/ruff.yaml
+++ b/.github/workflows/ruff.yaml
@@ -208,7 +208,7 @@ jobs:
          target: ${{ matrix.platform.target }}
          manylinux: auto
          args: --release --out dist
-      - uses: uraimo/run-on-arch-action@v2
+      - uses: uraimo/run-on-arch-action@v2.5.0
        if: matrix.platform.arch != 'ppc64'
        name: Install built wheel
        with:
@@ -309,7 +309,7 @@ jobs:
          target: ${{ matrix.platform.target }}
          manylinux: musllinux_1_2
          args: --release --out dist
-      - uses: uraimo/run-on-arch-action@v2
+      - uses: uraimo/run-on-arch-action@master
        name: Install built wheel
        with:
          arch: ${{ matrix.platform.arch }}
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 fail_fast: true
 repos:
  - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.12.1
+    rev: v0.10.1
    hooks:
      - id: validate-pyproject

--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -104,7 +104,7 @@ At a high level, the steps involved in adding a new lint rule are as follows:

 1. Determine a name for the new rule as per our [rule naming convention](#rule-naming-convention).
 1. Create a file for your rule (e.g., `crates/ruff/src/rules/flake8_bugbear/rules/abstract_base_class.rs`).
-1. In that file, define a violation struct. You can grep for `#[violation]` to see examples.
+1. In that file, define a violation struct. You can grep for `define_violation!` to see examples.
 1. Map the violation struct to a rule code in `crates/ruff/src/registry.rs` (e.g., `E402`).
 1. Define the logic for triggering the violation in `crates/ruff/src/checkers/ast.rs` (for AST-based
   checks), `crates/ruff/src/checkers/tokens.rs` (for token-based checks), `crates/ruff/src/checkers/lines.rs`
@@ -115,7 +115,7 @@ At a high level, the steps involved in adding a new lint rule are as follows:

 To define the violation, start by creating a dedicated file for your rule under the appropriate
 rule linter (e.g., `crates/ruff/src/rules/flake8_bugbear/rules/abstract_base_class.rs`). That file should
-contain a struct defined via `#[violation]`, along with a function that creates the violation
+contain a struct defined via `define_violation!`, along with a function that creates the violation
 based on any required inputs. (Many of the existing examples live in `crates/ruff/src/violations.rs`,
 but we're looking to place new rules in their own files.)

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -313,14 +313,13 @@ dependencies = [

 [[package]]
 name = "clap_complete_command"
-version = "0.5.1"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "183495371ea78d4c9ff638bfc6497d46fed2396e4f9c50aebc1278a4a9919a3d"
+checksum = "4160b4a4f72ef58bd766bad27c09e6ef1cc9d82a22f6a0f55d152985a4a48e31"
 dependencies = [
 "clap 4.1.8",
 "clap_complete",
 "clap_complete_fig",
- "clap_complete_nushell",
 ]

 [[package]]
@@ -333,16 +332,6 @@ dependencies = [
 "clap_complete",
 ]

-[[package]]
-name = "clap_complete_nushell"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7fa41f5e6aa83bd151b70fd0ceaee703d68cd669522795dc812df9edad1252c"
-dependencies = [
- "clap 4.1.8",
- "clap_complete",
-]
-
 [[package]]
 name = "clap_derive"
 version = "4.1.8"
@@ -565,16 +554,6 @@ dependencies = [
 "typenum",
 ]

-[[package]]
-name = "ctor"
-version = "0.1.26"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d2301688392eb071b0bf1a37be05c469d3cc4dbbd95df672fe28ab021e6a096"
-dependencies = [
- "quote",
- "syn",
-]
-
 [[package]]
 name = "cxx"
 version = "1.0.91"
@@ -619,6 +598,17 @@ dependencies = [
 "syn",
 ]

+[[package]]
+name = "derivative"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "diff"
 version = "0.1.13"
@@ -780,7 +770,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8-to-ruff"
-version = "0.0.256"
+version = "0.0.254"
 dependencies = [
 "anyhow",
 "clap 4.1.8",
@@ -1458,15 +1448,6 @@ version = "6.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b7820b9daea5457c9f21c69448905d723fbd21136ccf521748f23fd49e723ee"

-[[package]]
-name = "output_vt100"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "628223faebab4e3e40667ee0b2336d34a5b960ff60ea743ddfdbcf7770bcfb66"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.1"
@@ -1514,12 +1495,6 @@ dependencies = [
 "once_cell",
 ]

-[[package]]
-name = "pathdiff"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
-
 [[package]]
 name = "peg"
 version = "0.8.1"
@@ -1547,18 +1522,6 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9fa00462b37ead6d11a82c9d568b26682d78e0477dc02d1966c013af80969739"

-[[package]]
-name = "pep440_rs"
-version = "0.2.0"
-source = "git+https://github.com/konstin/pep440-rs.git?rev=a8fef4ec47f4c25b070b39cdbe6a0b9847e49941#a8fef4ec47f4c25b070b39cdbe6a0b9847e49941"
-dependencies = [
- "lazy_static",
- "regex",
- "serde",
- "tracing",
- "unicode-width",
-]
-
 [[package]]
 name = "percent-encoding"
 version = "2.2.0"
@@ -1756,18 +1719,6 @@ dependencies = [
 "termtree",
 ]

-[[package]]
-name = "pretty_assertions"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a25e9bcb20aa780fd0bb16b72403a9064d6b3f22f026946029acb941a50af755"
-dependencies = [
- "ctor",
- "diff",
- "output_vt100",
- "yansi",
-]
-
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -1982,17 +1933,22 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.256"
+version = "0.0.254"
 dependencies = [
 "anyhow",
 "bisection",
 "bitflags",
+ "cfg-if",
 "chrono",
 "clap 4.1.8",
 "colored",
+ "console_error_panic_hook",
+ "console_log",
 "criterion",
+ "derivative",
 "dirs",
 "fern",
+ "getrandom",
 "glob",
 "globset",
 "ignore",
@@ -2000,6 +1956,7 @@ dependencies = [
 "insta",
 "is-macro",
 "itertools",
+ "js-sys",
 "libcst",
 "log",
 "natord",
@@ -2008,16 +1965,11 @@ dependencies = [
 "num-traits",
 "once_cell",
 "path-absolutize",
- "pathdiff",
- "pep440_rs",
- "pretty_assertions",
 "regex",
 "result-like",
 "ruff_cache",
- "ruff_diagnostics",
 "ruff_macros",
- "ruff_python_ast",
- "ruff_python_stdlib",
+ "ruff_python",
 "ruff_rustpython",
 "rustc-hash",
 "rustpython-common",
@@ -2025,6 +1977,7 @@ dependencies = [
 "schemars",
 "semver",
 "serde",
+ "serde-wasm-bindgen",
 "shellexpand",
 "smallvec",
 "strum",
@@ -2033,18 +1986,8 @@ dependencies = [
 "textwrap",
 "thiserror",
 "toml",
-]
-
-[[package]]
-name = "ruff_benchmark"
-version = "0.0.0"
-dependencies = [
- "criterion",
- "mimalloc",
- "ruff",
- "tikv-jemallocator",
- "ureq",
- "url",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
 ]

 [[package]]
@@ -2060,7 +2003,7 @@ dependencies = [

 [[package]]
 name = "ruff_cli"
-version = "0.0.256"
+version = "0.0.254"
 dependencies = [
 "annotate-snippets 0.9.1",
 "anyhow",
@@ -2087,7 +2030,6 @@ dependencies = [
 "regex",
 "ruff",
 "ruff_cache",
- "ruff_diagnostics",
 "rustc-hash",
 "serde",
 "serde_json",
@@ -2109,11 +2051,9 @@ dependencies = [
 "itertools",
 "libcst",
 "once_cell",
- "pretty_assertions",
 "regex",
 "ruff",
 "ruff_cli",
- "ruff_diagnostics",
 "rustpython-common",
 "rustpython-parser",
 "schemars",
@@ -2123,15 +2063,6 @@ dependencies = [
 "textwrap",
 ]

-[[package]]
-name = "ruff_diagnostics"
-version = "0.0.0"
-dependencies = [
- "ruff_python_ast",
- "rustpython-parser",
- "serde",
-]
-
 [[package]]
 name = "ruff_formatter"
 version = "0.0.0"
@@ -2158,25 +2089,12 @@ dependencies = [
 ]

 [[package]]
-name = "ruff_python_ast"
+name = "ruff_python"
 version = "0.0.0"
 dependencies = [
- "anyhow",
- "bitflags",
- "is-macro",
- "itertools",
- "log",
- "nohash-hasher",
- "num-bigint",
- "num-traits",
 "once_cell",
 "regex",
- "ruff_python_stdlib",
- "ruff_rustpython",
 "rustc-hash",
- "rustpython-common",
- "rustpython-parser",
- "smallvec",
 ]

 [[package]]
@@ -2190,8 +2108,7 @@ dependencies = [
 "itertools",
 "once_cell",
 "ruff_formatter",
- "ruff_python_ast",
- "ruff_python_stdlib",
+ "ruff_python",
 "ruff_rustpython",
 "ruff_testing_macros",
 "ruff_text_size",
@@ -2202,15 +2119,6 @@ dependencies = [
 "test-case",
 ]

-[[package]]
-name = "ruff_python_stdlib"
-version = "0.0.0"
-dependencies = [
- "once_cell",
- "regex",
- "rustc-hash",
-]
-
 [[package]]
 name = "ruff_rustpython"
 version = "0.0.0"
@@ -2226,6 +2134,7 @@ name = "ruff_testing_macros"
 version = "0.0.0"
 dependencies = [
 "glob",
+ "proc-macro-error",
 "proc-macro2",
 "quote",
 "syn",
@@ -2241,25 +2150,6 @@ dependencies = [
 "static_assertions",
 ]

-[[package]]
-name = "ruff_wasm"
-version = "0.0.0"
-dependencies = [
- "console_error_panic_hook",
- "console_log",
- "getrandom",
- "js-sys",
- "log",
- "ruff",
- "ruff_python_ast",
- "ruff_rustpython",
- "rustpython-parser",
- "serde",
- "serde-wasm-bindgen",
- "wasm-bindgen",
- "wasm-bindgen-test",
-]
-
 [[package]]
 name = "rust-stemmers"
 version = "1.2.0"
@@ -2305,7 +2195,7 @@ dependencies = [
 [[package]]
 name = "rustpython-ast"
 version = "0.2.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=c15f670f2c30cfae6b41a1874893590148c74bc4#c15f670f2c30cfae6b41a1874893590148c74bc4"
+source = "git+https://github.com/RustPython/RustPython.git?rev=1871a1632e310985414211222f5bf8069678892f#1871a1632e310985414211222f5bf8069678892f"
 dependencies = [
 "num-bigint",
 "rustpython-compiler-core",
@@ -2314,7 +2204,7 @@ dependencies = [
 [[package]]
 name = "rustpython-common"
 version = "0.2.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=c15f670f2c30cfae6b41a1874893590148c74bc4#c15f670f2c30cfae6b41a1874893590148c74bc4"
+source = "git+https://github.com/RustPython/RustPython.git?rev=1871a1632e310985414211222f5bf8069678892f#1871a1632e310985414211222f5bf8069678892f"
 dependencies = [
 "ascii",
 "bitflags",
@@ -2339,7 +2229,7 @@ dependencies = [
 [[package]]
 name = "rustpython-compiler-core"
 version = "0.2.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=c15f670f2c30cfae6b41a1874893590148c74bc4#c15f670f2c30cfae6b41a1874893590148c74bc4"
+source = "git+https://github.com/RustPython/RustPython.git?rev=1871a1632e310985414211222f5bf8069678892f#1871a1632e310985414211222f5bf8069678892f"
 dependencies = [
 "bitflags",
 "bstr 0.2.17",
@@ -2353,7 +2243,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser"
 version = "0.2.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=c15f670f2c30cfae6b41a1874893590148c74bc4#c15f670f2c30cfae6b41a1874893590148c74bc4"
+source = "git+https://github.com/RustPython/RustPython.git?rev=1871a1632e310985414211222f5bf8069678892f#1871a1632e310985414211222f5bf8069678892f"
 dependencies = [
 "ahash",
 "anyhow",
@@ -2465,9 +2355,9 @@ dependencies = [

 [[package]]
 name = "serde-wasm-bindgen"
-version = "0.5.0"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3b143e2833c57ab9ad3ea280d21fd34e285a42837aeb0ee301f4f41890fa00e"
+checksum = "e3b4c031cd0d9014307d82b8abf653c0290fbdaeb4c02d00c63cf52f728628bf"
 dependencies = [
 "js-sys",
 "serde",
@@ -2878,21 +2768,9 @@ checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
 dependencies = [
 "cfg-if",
 "pin-project-lite",
- "tracing-attributes",
 "tracing-core",
 ]

-[[package]]
-name = "tracing-attributes"
-version = "0.1.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "tracing-core"
 version = "0.1.30"
@@ -3388,12 +3266,6 @@ dependencies = [
 "linked-hash-map",
 ]

-[[package]]
-name = "yansi"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
-
 [[package]]
 name = "yansi-term"
 version = "0.1.2"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,11 +3,7 @@ members = ["crates/*"]

 [workspace.package]
 edition = "2021"
-rust-version = "1.67"
-homepage = "https://beta.ruff.rs/docs/"
-documentation = "https://beta.ruff.rs/docs/"
-repository = "https://github.com/charliermarsh/ruff"
-authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
+rust-version = "1.67.0"

 [workspace.dependencies]
 anyhow = { version = "1.0.69" }
@@ -30,11 +26,11 @@ proc-macro2 = { version = "1.0.51" }
 quote = { version = "1.0.23" }
 regex = { version = "1.7.1" }
 rustc-hash = { version = "1.1.0" }
-rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "c15f670f2c30cfae6b41a1874893590148c74bc4" }
+rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "1871a1632e310985414211222f5bf8069678892f" }
 rustpython-parser = { features = [
  "lalrpop",
  "serde",
-], git = "https://github.com/RustPython/RustPython.git", rev = "c15f670f2c30cfae6b41a1874893590148c74bc4" }
+], git = "https://github.com/RustPython/RustPython.git", rev = "1871a1632e310985414211222f5bf8069678892f" }
 schemars = { version = "0.8.12" }
 serde = { version = "1.0.152", features = ["derive"] }
 serde_json = { version = "1.0.93" }
@@ -63,9 +59,3 @@ opt-level = 3
 # https://github.com/bytecodealliance/wasm-tools/blob/b5c3d98e40590512a3b12470ef358d5c7b983b15/crates/wasmparser/src/limits.rs#L29
 [profile.dev.package.rustpython-parser]
 opt-level = 1
-
-# Use the `--profile release-debug` flag to show symbols in release mode.
-# e.g. `cargo build --profile release-debug`
-[profile.release-debug]
-inherits = "release"
-debug = 1
--- a/README.md
+++ b/README.md
@@ -137,7 +137,7 @@ Ruff can also be used as a [pre-commit](https://pre-commit.com) hook:
 ```yaml
 - repo: https://github.com/charliermarsh/ruff-pre-commit
  # Ruff version.
-  rev: 'v0.0.256'
+  rev: 'v0.0.254'
  hooks:
    - id: ruff
 ```
@@ -306,9 +306,6 @@ Ruff is used in a number of major open-source projects, including:
 - [meson-python](https://github.com/mesonbuild/meson-python)
 - [ZenML](https://github.com/zenml-io/zenml)
 - [delta-rs](https://github.com/delta-io/delta-rs)
- [Starlite](https://github.com/starlite-api/starlite)
- [telemetry-airflow (Mozilla)](https://github.com/mozilla/telemetry-airflow)
- [Stable Baselines3](https://github.com/DLR-RM/stable-baselines3)

 ## License

--- a/crates/flake8_to_ruff/Cargo.toml
+++ b/crates/flake8_to_ruff/Cargo.toml
@@ -1,18 +1,17 @@
 [package]
 name = "flake8-to-ruff"
-version = "0.0.256"
+version = "0.0.254"
 edition = { workspace = true }
 rust-version = { workspace = true }

 [dependencies]
-ruff = { path = "../ruff", default-features = false }
-
 anyhow = { workspace = true }
 clap = { workspace = true }
 colored = { workspace = true }
 configparser = { version = "3.0.2" }
 once_cell = { workspace = true }
 regex = { workspace = true }
+ruff = { path = "../ruff", default-features = false }
 rustc-hash = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
--- a/crates/flake8_to_ruff/src/main.rs
+++ b/crates/flake8_to_ruff/src/main.rs
@@ -46,15 +46,8 @@ fn main() -> Result<()> {
        .map(|tool| ExternalConfig {
            black: tool.black.as_ref(),
            isort: tool.isort.as_ref(),
-            ..Default::default()
        })
        .unwrap_or_default();
-    let external_config = ExternalConfig {
-        project: pyproject
-            .as_ref()
-            .and_then(|pyproject| pyproject.project.as_ref()),
-        ..external_config
-    };

    // Create Ruff's pyproject.toml section.
    let pyproject = flake8_to_ruff::convert(&config, &external_config, args.plugin)?;
--- a/crates/ruff/Cargo.toml
+++ b/crates/ruff/Cargo.toml
@@ -1,32 +1,34 @@
 [package]
 name = "ruff"
-version = "0.0.256"
-authors.workspace = true
-edition.workspace = true
-rust-version.workspace = true
-documentation.workspace = true
-homepage.workspace = true
-repository.workspace = true
+version = "0.0.254"
+authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
+edition = { workspace = true }
+rust-version = { workspace = true }
+documentation = "https://github.com/charliermarsh/ruff"
+homepage = "https://github.com/charliermarsh/ruff"
+repository = "https://github.com/charliermarsh/ruff"
 readme = "README.md"
 license = "MIT"

 [lib]
 name = "ruff"
+crate-type = ["cdylib", "rlib"]
+doctest = false

 [dependencies]
-ruff_cache = { path = "../ruff_cache" }
-ruff_diagnostics = { path = "../ruff_diagnostics", features = ["serde"] }
 ruff_macros = { path = "../ruff_macros" }
-ruff_python_ast = { path = "../ruff_python_ast" }
-ruff_python_stdlib = { path = "../ruff_python_stdlib" }
+ruff_python = { path = "../ruff_python" }
 ruff_rustpython = { path = "../ruff_rustpython" }
+ruff_cache = { path = "../ruff_cache" }

 anyhow = { workspace = true }
 bisection = { version = "0.1.0" }
 bitflags = { workspace = true }
+cfg-if = { version = "1.0.0" }
 chrono = { workspace = true }
-clap = { workspace = true, features = ["derive", "string"], optional = true }
+clap = { workspace = true, features = ["derive", "env", "string"] }
 colored = { workspace = true }
+derivative = { version = "2.2.0" }
 dirs = { version = "4.0.0" }
 fern = { version = "0.6.1" }
 glob = { workspace = true }
@@ -46,10 +48,6 @@ path-absolutize = { workspace = true, features = [
  "once_cell_cache",
  "use_unix_paths_on_wasm",
 ] }
-pathdiff = { version = "0.2.1" }
-pep440_rs = { git = "https://github.com/konstin/pep440-rs.git", features = [
-  "serde",
-], rev = "a8fef4ec47f4c25b070b39cdbe6a0b9847e49941" }
 regex = { workspace = true }
 result-like = { version = "0.4.6" }
 rustc-hash = { workspace = true }
@@ -66,11 +64,22 @@ textwrap = { workspace = true }
 thiserror = { version = "1.0.38" }
 toml = { workspace = true }

+# https://docs.rs/getrandom/0.2.7/getrandom/#webassembly-support
+[target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
+getrandom = { version = "0.2.8", features = ["js"] }
+console_error_panic_hook = { version = "0.1.7" }
+console_log = { version = "0.2.1" }
+serde-wasm-bindgen = { version = "0.4.5" }
+js-sys = { version = "0.3.61" }
+wasm-bindgen = { version = "0.2.84" }
+
 [dev-dependencies]
-criterion = { version = "0.4.0" }
 insta = { workspace = true, features = ["yaml", "redactions"] }
-pretty_assertions = "1.3.0"
 test-case = { workspace = true }
+wasm-bindgen-test = { version = "0.3.34" }
+
+[target.'cfg(not(target_family = "wasm"))'.dev-dependencies]
+criterion = { version = "0.4.0" }

 [features]
 default = []
--- a/crates/ruff/resources/test/fixtures/flake8_bugbear/B030.py
+++ b/crates/ruff/resources/test/fixtures/flake8_bugbear/B030.py
@@ -1,47 +0,0 @@
-"""
-Should emit:
-B030:
- - line 12, column 8
- - line 17, column 9
- - line 22, column 21
- - line 27, column 37
-"""
-
-try:
-    pass
-except 1:  # error
-    pass
-
-try:
-    pass
-except (1, ValueError):  # error
-    pass
-
-try:
-    pass
-except (ValueError, (RuntimeError, (KeyError, TypeError))):  # error
-    pass
-
-try:
-    pass
-except (ValueError, *(RuntimeError, (KeyError, TypeError))):  # error
-    pass
-
-
-try:
-    pass
-except (ValueError, *(RuntimeError, TypeError)):  # ok
-    pass
-
-try:
-    pass
-except (ValueError, *[RuntimeError, *(TypeError,)]):  # ok
-    pass
-
-def what_to_catch():
-    return ...
-
-try:
-    pass
-except what_to_catch():  # ok
-    pass
--- a/crates/ruff/resources/test/fixtures/flake8_pie/PIE802.py
+++ b/crates/ruff/resources/test/fixtures/flake8_pie/PIE802.py
@@ -8,9 +8,3 @@ any({x.id for x in bar})
 # PIE 802
 any([x.id for x in bar])
 all([x.id for x in bar])
-any(  # first comment
-    [x.id for x in bar],  # second comment
-)  # third comment
-all(  # first comment
-    [x.id for x in bar],  # second comment
-)  # third comment
--- a/crates/ruff/resources/test/fixtures/flake8_pie/PIE810.py
+++ b/crates/ruff/resources/test/fixtures/flake8_pie/PIE810.py
@@ -6,8 +6,6 @@ obj.endswith("foo") or obj.endswith("bar")
 obj.startswith(foo) or obj.startswith(bar)
 # error
 obj.startswith(foo) or obj.startswith("foo")
-# error
-obj.endswith(foo) or obj.startswith(foo) or obj.startswith("foo")

 # ok
 obj.startswith(("foo",  "bar"))
--- a/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi
+++ b/crates/ruff/resources/test/fixtures/flake8_pyi/PYI011.pyi
@@ -1,10 +1,3 @@
-import math
-import os
-import sys
-from math import inf
-
-import numpy as np
-
 def f12(
    x,
    y: str = os.pathsep,  # Error PYI011 Only simple default values allowed for typed arguments
@@ -68,49 +61,3 @@ def f22(
    x: complex = -42.5j  # Error PYI011 Only simple default values allowed for typed arguments
    + 4.3j,
 ) -> None: ...
-def f23(
-    x: bool = True,  # OK
-) -> None: ...
-def f24(
-    x: float = 3.14,  # OK
-) -> None: ...
-def f25(
-    x: float = -3.14,  # OK
-) -> None: ...
-def f26(
-    x: complex = -3.14j,  # OK
-) -> None: ...
-def f27(
-    x: complex = -3 - 3.14j,  # OK
-) -> None: ...
-def f28(
-    x: float = math.tau,  # OK
-) -> None: ...
-def f29(
-    x: float = math.inf,  # OK
-) -> None: ...
-def f30(
-    x: float = -math.inf,  # OK
-) -> None: ...
-def f31(
-    x: float = inf,  # Error PYI011 Only simple default values allowed for typed arguments
-) -> None: ...
-def f32(
-    x: float = np.inf,  # Error PYI011 Only simple default values allowed for typed arguments
-) -> None: ...
-def f33(
-    x: float = math.nan,  # OK
-) -> None: ...
-def f34(
-    x: float = -math.nan,  # Error PYI011 Only simple default values allowed for typed arguments
-) -> None: ...
-def f35(
-    x: complex = math.inf  # Error PYI011 Only simple default values allowed for typed arguments
-    + 1j,
-) -> None: ...
-def f36(
-    *, x: str = sys.version,  # OK
-) -> None: ...
-def f37(
-    *, x: str = "" + "",  # Error PYI011 Only simple default values allowed for typed arguments
-) -> None: ...
--- a/crates/ruff/resources/test/fixtures/flake8_pyi/PYI014.pyi
+++ b/crates/ruff/resources/test/fixtures/flake8_pyi/PYI014.pyi
@@ -43,6 +43,3 @@ def f21(
 def f22(
    x=-42.5j + 4.3j,  # Error PYI014
 ) -> None: ...
-def f23(
-  x=True,  # OK
-) -> None: ...
--- a/crates/ruff/resources/test/fixtures/flake8_return/RET504.py
+++ b/crates/ruff/resources/test/fixtures/flake8_return/RET504.py
@@ -6,6 +6,22 @@ def x():
    return a  # error


+def x():
+    a = 1
+    print(a)
+    a = 2
+    return a  # error
+
+
+def x():
+    a = 1
+    if True:
+        return a  # error
+    a = 2
+    print(a)
+    return a
+
+
 # Can be refactored false positives
 # https://github.com/afonasev/flake8-return/issues/47#issuecomment-1122571066
 def get_bar_if_exists(obj):
@@ -149,6 +165,44 @@ def my_func():
    return foo


+# Refactored incorrect false positives
+# See test cases above marked: "Can be refactored false positives"
+# https://github.com/afonasev/flake8-return/issues/47#issuecomment-1122571066
+def get_bar_if_exists(obj):
+    if hasattr(obj, "bar"):
+        return str(obj.bar)
+    return ""
+
+
+# https://github.com/afonasev/flake8-return/issues/47#issue-641117366
+def x():
+    formatted = _USER_AGENT_FORMATTER.format(format_string, **values)
+    # clean up after any blank components
+    return formatted.replace("()", "").replace("  ", " ").strip()
+
+
+# https://github.com/afonasev/flake8-return/issues/47#issue-641117366
+def user_agent_username(username=None):
+
+    if not username:
+        return ""
+
+    username = username.replace(" ", "_")  # Avoid spaces or %20.
+    try:
+        username.encode("ascii")  # just test,
+        # but not actually use it
+    except UnicodeEncodeError:
+        username = quote(username.encode("utf-8"))
+    else:
+        # % is legal in the default $wgLegalTitleChars
+        # This is so that ops know the real pywikibot will not
+        # allow a useragent in the username to allow through a
+        # hand-coded percent-encoded value.
+        if "%" in username:
+            username = quote(username)
+    return username
+
+
 # https://github.com/afonasev/flake8-return/issues/116#issue-1367575481
 def no_exception_loop():
    success = False
@@ -206,44 +260,3 @@ def nonlocal_assignment():
        nonlocal X
        X = 1
        return X
-
-
-def decorator() -> Flask:
-    app = Flask(__name__)
-
-    @app.route('/hello')
-    def hello() -> str:
-        """Hello endpoint."""
-        return 'Hello, World!'
-
-    return app
-
-
-def default():
-    y = 1
-
-    def f(x = y) -> X:
-        return x
-
-    return y
-
-
-def get_queryset(option_1, option_2):
-    queryset: Any = None
-    queryset = queryset.filter(a=1)
-    if option_1:
-        queryset = queryset.annotate(b=Value(2))
-    if option_2:
-        queryset = queryset.filter(c=3)
-    return queryset
-
-
-def get_queryset():
-    queryset = Model.filter(a=1)
-    queryset = queryset.filter(c=3)
-    return queryset
-
-
-def get_queryset():
-    queryset = Model.filter(a=1)
-    return queryset  # error
--- a/crates/ruff/resources/test/fixtures/flake8_type_checking/TCH004_14.pyi
+++ b/crates/ruff/resources/test/fixtures/flake8_type_checking/TCH004_14.pyi
@@ -1,3 +0,0 @@
-from typing import Tuple
-
-x: Tuple
--- a/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_1.py
+++ b/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_1.py
--- a/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_2.py
+++ b/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_2.py
--- a/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_3.py
+++ b/crates/ruff/resources/test/fixtures/flake8_type_checking/runtime_evaluated_base_classes_3.py
--- a/crates/ruff/resources/test/fixtures/isort/force_single_line.py
+++ b/crates/ruff/resources/test/fixtures/isort/force_single_line.py
@@ -1,10 +1,5 @@
 import sys, math
 from os import path, uname
-from json import detect_encoding
-from json import dump
-from json import dumps as json_dumps
-from json import load
-from json import loads as json_loads
 from logging.handlers import StreamHandler, FileHandler

 # comment 1
@@ -15,10 +10,9 @@ from third_party import lib4

 from foo import bar  # comment 3
 from foo2 import bar2  # comment 4
-from foo3 import bar3, baz3  # comment 5

-# comment 6
+# comment 5
 from bar import (
-     a, # comment 7
-     b, # comment 8
-)
+     a, # comment 6
+     b, # comment 7
+)
--- a/crates/ruff/resources/test/fixtures/isort/ruff_skip_file.py
+++ b/crates/ruff/resources/test/fixtures/isort/ruff_skip_file.py
@@ -1,10 +0,0 @@
-# ruff: isort: skip_file
-import e
-import f
-
-# isort: split
-
-import a
-import b
-import c
-import d
--- a/crates/ruff/resources/test/fixtures/isort/skip.py
+++ b/crates/ruff/resources/test/fixtures/isort/skip.py
@@ -6,14 +6,6 @@ def f():
    # isort: on


-def f():
-    # ruff: isort: off
-    import sys
-    import os
-    import collections
-    # ruff: isort: on
-
-
 def f():
    import sys
    import os  # isort: skip
--- a/crates/ruff/resources/test/fixtures/isort/isort_skip_file.py
+++ b/crates/ruff/resources/test/fixtures/isort/isort_skip_file.py
--- a/crates/ruff/resources/test/fixtures/pydocstyle/bom.py
+++ b/crates/ruff/resources/test/fixtures/pydocstyle/bom.py
@@ -1 +0,0 @@
-''' SAM macro definitions '''
--- a/crates/ruff/resources/test/fixtures/pylint/compare_to_empty_string.py
+++ b/crates/ruff/resources/test/fixtures/pylint/compare_to_empty_string.py
@@ -1,19 +0,0 @@
-x = "a string"
-y = "another string"
-z = ""
-
-
-def errors():
-    if x is "" or x == "":
-        print("x is an empty string")
-
-    if y is not "" or y != "":
-        print("y is not an empty string")
-
-    if "" != z:
-        print("z is an empty string")
-
-
-def ok():
-    if x and not y:
-        print("x is not an empty string, but y is an empty string")
--- a/crates/ruff/resources/test/fixtures/pylint/invalid_envvar_default.py
+++ b/crates/ruff/resources/test/fixtures/pylint/invalid_envvar_default.py
@@ -1,12 +0,0 @@
-import os
-
-tempVar = os.getenv("TEST", 12)  # [invalid-envvar-default]
-goodVar = os.getenv("TESTING", None)
-dictVarBad = os.getenv("AAA", {"a", 7})  # [invalid-envvar-default]
-print(os.getenv("TEST", False))  # [invalid-envvar-default]
-os.getenv("AA", "GOOD")
-os.getenv("AA", f"GOOD")
-os.getenv("AA", "GOOD" + "BAD")
-os.getenv("AA", "GOOD" + 1)
-os.getenv("AA", "GOOD %s" % "BAD")
-os.getenv("B", Z)
--- a/crates/ruff/resources/test/fixtures/pylint/invalid_envvar_value.py
+++ b/crates/ruff/resources/test/fixtures/pylint/invalid_envvar_value.py
@@ -1,15 +0,0 @@
-import os
-
-os.getenv(1)  # [invalid-envvar-value]
-os.getenv("a")
-os.getenv("test")
-os.getenv(key="testingAgain")
-os.getenv(key=11)  # [invalid-envvar-value]
-os.getenv(["hello"])  # [invalid-envvar-value]
-os.getenv(key="foo", default="bar")
-os.getenv(key=f"foo", default="bar")
-os.getenv(key="foo" + "bar", default=1)
-os.getenv(key=1 + "bar", default=1)  # [invalid-envvar-value]
-
-AA = "aa"
-os.getenv(AA)
--- a/crates/ruff/resources/test/fixtures/pyupgrade/UP012.py
+++ b/crates/ruff/resources/test/fixtures/pyupgrade/UP012.py
@@ -12,17 +12,11 @@ Ipsum
 """.encode(
    "utf-8"
 )
-(
-    "Lorem "
-    "Ipsum".encode()
-)
-(
-    "Lorem "  # Comment
-    "Ipsum".encode()  # Comment
-)
-(
-    "Lorem " "Ipsum".encode()
-)
+# b"""
+# Lorem
+#
+# Ipsum
+# """

 # `encode` on variables should not be processed.
 string = "hello there"
--- a/crates/ruff/resources/test/fixtures/pyupgrade/UP024_4.py
+++ b/crates/ruff/resources/test/fixtures/pyupgrade/UP024_4.py
@@ -1,10 +0,0 @@
-import socket
-
-from kombu import Connection, exceptions
-
-try:
-    conn = Connection(settings.CELERY_BROKER_URL)
-    conn.ensure_connection(max_retries=2)
-    conn._close()
-except (socket.error, exceptions.OperationalError):
-    return HttpResponseServerError("cache: cannot connect to broker.")
--- a/crates/ruff/resources/test/fixtures/pyupgrade/UP035.py
+++ b/crates/ruff/resources/test/fixtures/pyupgrade/UP035.py
@@ -41,7 +41,7 @@ if True:
        Good,
    )

-from typing import Callable, Match, Pattern, List, OrderedDict, AbstractSet, ContextManager
+from typing import Callable, Match, Pattern, List

 if True: from collections import (
    Mapping, Counter)
--- a/crates/ruff/resources/test/fixtures/pyupgrade/UP038.py
+++ b/crates/ruff/resources/test/fixtures/pyupgrade/UP038.py
@@ -5,5 +5,3 @@ isinstance(1, int)  # OK
 issubclass("yes", int)  # OK
 isinstance(1, int | float)  # OK
 issubclass("yes", int | str)  # OK
-isinstance(1, ())  # OK
-isinstance(1, (int, *(str, bytes)))  # OK
--- a/crates/ruff/resources/test/fixtures/ruff/RUF100_3.py
+++ b/crates/ruff/resources/test/fixtures/ruff/RUF100_3.py
@@ -1,13 +0,0 @@
-# noqa
-# noqa # comment
-print()  # noqa
-print()  # noqa # comment
-print(a)  # noqa
-print(a)  # noqa # comment
-
-# noqa: E501, F821
-# noqa: E501, F821 # comment
-print()  # noqa: E501, F821
-print()  # noqa: E501, F821 # comment
-print(a)  # noqa: E501, F821
-print(a)  # noqa: E501, F821 # comment
--- a/crates/ruff_python_ast/src/branch_detection.rs
+++ b/crates/ruff_python_ast/src/branch_detection.rs
@@ -4,7 +4,7 @@ use rustc_hash::FxHashMap;
 use rustpython_parser::ast::ExcepthandlerKind::ExceptHandler;
 use rustpython_parser::ast::{Stmt, StmtKind};

-use crate::types::RefEquality;
+use crate::ast::types::RefEquality;

 /// Return the common ancestor of `left` and `right` below `stop`, or `None`.
 fn common_ancestor<'a>(
--- a/crates/ruff_python_ast/src/cast.rs
+++ b/crates/ruff_python_ast/src/cast.rs
--- a/crates/ruff_python_ast/src/comparable.rs
+++ b/crates/ruff_python_ast/src/comparable.rs
@@ -1,14 +1,13 @@
 //! An equivalent object hierarchy to the [`Expr`] hierarchy, but with the
 //! ability to compare expressions for equality (via [`Eq`] and [`Hash`]).

+use num_bigint::BigInt;
 use rustpython_parser::ast::{
    Alias, Arg, Arguments, Boolop, Cmpop, Comprehension, Constant, Excepthandler,
    ExcepthandlerKind, Expr, ExprContext, ExprKind, Keyword, MatchCase, Operator, Pattern,
    PatternKind, Stmt, StmtKind, Unaryop, Withitem,
 };

-use num_bigint::BigInt;
-
 #[derive(Debug, PartialEq, Eq, Hash)]
 pub enum ComparableExprContext {
    Load,
--- a/crates/ruff_python_ast/src/context.rs
+++ b/crates/ruff_python_ast/src/context.rs
@@ -5,11 +5,11 @@ use rustc_hash::FxHashMap;
 use rustpython_parser::ast::{Expr, Stmt};
 use smallvec::smallvec;

-use ruff_python_stdlib::path::is_python_stub_file;
-use ruff_python_stdlib::typing::TYPING_EXTENSIONS;
+use ruff_python::typing::TYPING_EXTENSIONS;

-use crate::helpers::{collect_call_path, from_relative_import, Exceptions};
-use crate::types::{Binding, BindingKind, CallPath, ExecutionContext, RefEquality, Scope};
+use crate::ast::helpers::{collect_call_path, from_relative_import, Exceptions};
+use crate::ast::types::{Binding, BindingKind, CallPath, ExecutionContext, RefEquality, Scope};
+use crate::resolver::is_interface_definition_path;
 use crate::visibility::{module_visibility, Modifier, VisibleScope};

 #[allow(clippy::struct_excessive_bools)]
@@ -82,7 +82,7 @@ impl<'a> Context<'a> {
            in_type_checking_block: false,
            seen_import_boundary: false,
            futures_allowed: true,
-            annotations_future_enabled: is_python_stub_file(path),
+            annotations_future_enabled: is_interface_definition_path(path),
            handled_exceptions: Vec::default(),
        }
    }
--- a/crates/ruff_python_ast/src/function_type.rs
+++ b/crates/ruff_python_ast/src/function_type.rs
@@ -1,8 +1,8 @@
 use rustpython_parser::ast::Expr;

-use crate::context::Context;
-use crate::helpers::{map_callable, to_call_path};
-use crate::types::{Scope, ScopeKind};
+use crate::ast::context::Context;
+use crate::ast::helpers::{map_callable, to_call_path};
+use crate::ast::types::{Scope, ScopeKind};

 const CLASS_METHODS: [&str; 3] = ["__new__", "__init_subclass__", "__class_getitem__"];
 const METACLASS_BASES: [(&str, &str); 2] = [("", "type"), ("abc", "ABCMeta")];
--- a/crates/ruff_python_ast/src/hashable.rs
+++ b/crates/ruff_python_ast/src/hashable.rs
@@ -2,7 +2,7 @@ use std::hash::Hash;

 use rustpython_parser::ast::Expr;

-use crate::comparable::ComparableExpr;
+use crate::ast::comparable::ComparableExpr;

 /// Wrapper around `Expr` that implements `Hash` and `PartialEq`.
 pub struct HashableExpr<'a>(&'a Expr);
@@ -30,11 +30,11 @@ impl<'a> From<&'a Expr> for HashableExpr<'a> {
 }

 impl<'a> HashableExpr<'a> {
-    pub const fn from_expr(expr: &'a Expr) -> Self {
+    pub(crate) const fn from_expr(expr: &'a Expr) -> Self {
        Self(expr)
    }

-    pub const fn as_expr(&self) -> &'a Expr {
+    pub(crate) const fn as_expr(&self) -> &'a Expr {
        self.0
    }
 }
--- a/crates/ruff_python_ast/src/helpers.rs
+++ b/crates/ruff_python_ast/src/helpers.rs
@@ -13,12 +13,11 @@ use rustpython_parser::ast::{
 use rustpython_parser::{lexer, Mode, StringKind, Tok};
 use smallvec::{smallvec, SmallVec};

-use crate::context::Context;
-use crate::newlines::StrExt;
+use crate::ast::context::Context;
+use crate::ast::types::{Binding, BindingKind, CallPath, Range};
+use crate::ast::visitor;
+use crate::ast::visitor::Visitor;
 use crate::source_code::{Generator, Indexer, Locator, Stylist};
-use crate::types::{Binding, BindingKind, CallPath, Range};
-use crate::visitor;
-use crate::visitor::Visitor;

 /// Create an `Expr` with default location from an `ExprKind`.
 pub fn create_expr(node: ExprKind) -> Expr {
@@ -653,7 +652,7 @@ pub fn has_comments<T>(located: &Located<T>, locator: &Locator) -> bool {

 /// Returns `true` if a [`Range`] includes at least one comment.
 pub fn has_comments_in(range: Range, locator: &Locator) -> bool {
-    for tok in lexer::lex_located(locator.slice(range), Mode::Module, range.location) {
+    for tok in lexer::lex_located(locator.slice(&range), Mode::Module, range.location) {
        match tok {
            Ok((_, tok, _)) => {
                if matches!(tok, Tok::Comment(..)) {
@@ -742,7 +741,7 @@ pub fn to_module_path(package: &Path, path: &Path) -> Option<Vec<String>> {
        .ok()?
        .iter()
        .map(Path::new)
-        .map(Path::file_stem)
+        .map(std::path::Path::file_stem)
        .map(|path| path.and_then(|path| path.to_os_string().into_string().ok()))
        .collect::<Option<Vec<String>>>()
 }
@@ -800,7 +799,7 @@ where
        match &stmt.node {
            StmtKind::Raise { exc, cause } => {
                self.raises
-                    .push((Range::from(stmt), exc.as_deref(), cause.as_deref()));
+                    .push((Range::from_located(stmt), exc.as_deref(), cause.as_deref()));
            }
            StmtKind::ClassDef { .. }
            | StmtKind::FunctionDef { .. }
@@ -855,7 +854,7 @@ pub fn to_relative(absolute: Location, base: Location) -> Location {
 /// Return `true` if a [`Located`] has leading content.
 pub fn match_leading_content<T>(located: &Located<T>, locator: &Locator) -> bool {
    let range = Range::new(Location::new(located.location.row(), 0), located.location);
-    let prefix = locator.slice(range);
+    let prefix = locator.slice(&range);
    prefix.chars().any(|char| !char.is_whitespace())
 }

@@ -865,7 +864,7 @@ pub fn match_trailing_content<T>(located: &Located<T>, locator: &Locator) -> boo
        located.end_location.unwrap(),
        Location::new(located.end_location.unwrap().row() + 1, 0),
    );
-    let suffix = locator.slice(range);
+    let suffix = locator.slice(&range);
    for char in suffix.chars() {
        if char == '#' {
            return false;
@@ -883,7 +882,7 @@ pub fn match_trailing_comment<T>(located: &Located<T>, locator: &Locator) -> Opt
        located.end_location.unwrap(),
        Location::new(located.end_location.unwrap().row() + 1, 0),
    );
-    let suffix = locator.slice(range);
+    let suffix = locator.slice(&range);
    for (i, char) in suffix.chars().enumerate() {
        if char == '#' {
            return Some(i);
@@ -941,7 +940,7 @@ pub fn identifier_range(stmt: &Stmt, locator: &Locator) -> Range {
            | StmtKind::FunctionDef { .. }
            | StmtKind::AsyncFunctionDef { .. }
    ) {
-        let contents = locator.slice(stmt);
+        let contents = locator.slice(&Range::from_located(stmt));
        for (start, tok, end) in lexer::lex_located(contents, Mode::Module, stmt.location).flatten()
        {
            if matches!(tok, Tok::Name { .. }) {
@@ -950,7 +949,7 @@ pub fn identifier_range(stmt: &Stmt, locator: &Locator) -> Range {
        }
        error!("Failed to find identifier for {:?}", stmt);
    }
-    Range::from(stmt)
+    Range::from_located(stmt)
 }

 /// Like `identifier_range`, but accepts a `Binding`.
@@ -968,12 +967,12 @@ pub fn binding_range(binding: &Binding, locator: &Locator) -> Range {
    }
 }

-/// Return the ranges of [`Tok::Name`] tokens within a specified node.
-pub fn find_names<'a, T>(
-    located: &'a Located<T>,
+// Return the ranges of `Name` tokens within a specified node.
+pub fn find_names<'a, T, U>(
+    located: &'a Located<T, U>,
    locator: &'a Locator,
 ) -> impl Iterator<Item = Range> + 'a {
-    let contents = locator.slice(located);
+    let contents = locator.slice(&Range::from_located(located));
    lexer::lex_located(contents, Mode::Module, located.location)
        .flatten()
        .filter(|(_, tok, _)| matches!(tok, Tok::Name { .. }))
@@ -991,7 +990,7 @@ pub fn excepthandler_name_range(handler: &Excepthandler, locator: &Locator) -> O
    match (name, type_) {
        (Some(_), Some(type_)) => {
            let type_end_location = type_.end_location.unwrap();
-            let contents = locator.slice(Range::new(type_end_location, body[0].location));
+            let contents = locator.slice(&Range::new(type_end_location, body[0].location));
            let range = lexer::lex_located(contents, Mode::Module, type_end_location)
                .flatten()
                .tuple_windows()
@@ -1015,7 +1014,7 @@ pub fn except_range(handler: &Excepthandler, locator: &Locator) -> Range {
            .expect("Expected body to be non-empty")
            .location
    };
-    let contents = locator.slice(Range {
+    let contents = locator.slice(&Range {
        location: handler.location,
        end_location: end,
    });
@@ -1032,7 +1031,7 @@ pub fn except_range(handler: &Excepthandler, locator: &Locator) -> Range {

 /// Find f-strings that don't contain any formatted values in a `JoinedStr`.
 pub fn find_useless_f_strings(expr: &Expr, locator: &Locator) -> Vec<(Range, Range)> {
-    let contents = locator.slice(expr);
+    let contents = locator.slice(&Range::from_located(expr));
    lexer::lex_located(contents, Mode::Module, expr.location)
        .flatten()
        .filter_map(|(location, tok, end_location)| match tok {
@@ -1040,7 +1039,7 @@ pub fn find_useless_f_strings(expr: &Expr, locator: &Locator) -> Vec<(Range, Ran
                kind: StringKind::FString | StringKind::RawFString,
                ..
            } => {
-                let first_char = locator.slice(Range {
+                let first_char = locator.slice(&Range {
                    location,
                    end_location: Location::new(location.row(), location.column() + 1),
                });
@@ -1080,7 +1079,7 @@ pub fn else_range(stmt: &Stmt, locator: &Locator) -> Option<Range> {
                .expect("Expected body to be non-empty")
                .end_location
                .unwrap();
-            let contents = locator.slice(Range {
+            let contents = locator.slice(&Range {
                location: body_end,
                end_location: orelse
                    .first()
@@ -1102,7 +1101,7 @@ pub fn else_range(stmt: &Stmt, locator: &Locator) -> Option<Range> {

 /// Return the `Range` of the first `Tok::Colon` token in a `Range`.
 pub fn first_colon_range(range: Range, locator: &Locator) -> Option<Range> {
-    let contents = locator.slice(range);
+    let contents = locator.slice(&range);
    let range = lexer::lex_located(contents, Mode::Module, range.location)
        .flatten()
        .find(|(_, kind, _)| matches!(kind, Tok::Colon))
@@ -1126,7 +1125,7 @@ pub fn end_of_statement(stmt: &Stmt, locator: &Locator) -> Location {
    }

    // Otherwise, find the end of the last line that's "part of" the statement.
-    for (lineno, line) in contents.universal_newlines().enumerate() {
+    for (lineno, line) in contents.lines().enumerate() {
        if line.ends_with('\\') {
            continue;
        }
@@ -1158,7 +1157,7 @@ pub fn elif_else_range(stmt: &Stmt, locator: &Locator) -> Option<Range> {
        [stmt, ..] => stmt.location,
        _ => return None,
    };
-    let contents = locator.slice(Range::new(start, end));
+    let contents = locator.slice(&Range::new(start, end));
    let range = lexer::lex_located(contents, Mode::Module, start)
        .flatten()
        .find(|(_, kind, _)| matches!(kind, Tok::Elif | Tok::Else))
@@ -1213,50 +1212,48 @@ pub struct SimpleCallArgs<'a> {
 }

 impl<'a> SimpleCallArgs<'a> {
-    pub fn new(
-        args: impl IntoIterator<Item = &'a Expr>,
-        keywords: impl IntoIterator<Item = &'a Keyword>,
-    ) -> Self {
-        let args = args
-            .into_iter()
-            .take_while(|arg| !matches!(arg.node, ExprKind::Starred { .. }))
-            .collect();
+    pub fn new(args: &'a [Expr], keywords: &'a [Keyword]) -> Self {
+        let mut result = SimpleCallArgs::default();

-        let kwargs = keywords
-            .into_iter()
-            .filter_map(|keyword| {
-                let node = &keyword.node;
-                node.arg.as_ref().map(|arg| (arg.as_ref(), &node.value))
-            })
-            .collect();
+        for arg in args {
+            match &arg.node {
+                ExprKind::Starred { .. } => {
+                    break;
+                }
+                _ => {
+                    result.args.push(arg);
+                }
+            }
+        }

-        SimpleCallArgs { args, kwargs }
-    }
+        for keyword in keywords {
+            if let Some(arg) = &keyword.node.arg {
+                result.kwargs.insert(arg, &keyword.node.value);
+            }
+        }

-    /// Get the argument with the given name.
-    /// If the argument is not found by name, return
-    /// `None`.
-    pub fn keyword_argument(&self, name: &str) -> Option<&'a Expr> {
-        self.kwargs.get(name).copied()
+        result
    }

    /// Get the argument with the given name or position.
    /// If the argument is not found with either name or position, return
    /// `None`.
-    pub fn argument(&self, name: &str, position: usize) -> Option<&'a Expr> {
-        self.keyword_argument(name)
-            .or_else(|| self.args.get(position).copied())
+    pub fn get_argument(&self, name: &'a str, position: Option<usize>) -> Option<&'a Expr> {
+        if let Some(kwarg) = self.kwargs.get(name) {
+            return Some(kwarg);
+        }
+        if let Some(position) = position {
+            if position < self.args.len() {
+                return Some(self.args[position]);
+            }
+        }
+        None
    }

-    /// Return the number of positional and keyword arguments.
+    /// Get the number of positional and keyword arguments used.
    pub fn len(&self) -> usize {
        self.args.len() + self.kwargs.len()
    }
-
-    /// Return `true` if there are no positional or keyword arguments.
-    pub fn is_empty(&self) -> bool {
-        self.len() == 0
-    }
 }

 /// Return `true` if the given `Expr` is a potential logging call. Matches
@@ -1280,11 +1277,11 @@ mod tests {
    use rustpython_parser as parser;
    use rustpython_parser::ast::Location;

-    use crate::helpers::{
+    use crate::ast::helpers::{
        elif_else_range, else_range, first_colon_range, identifier_range, match_trailing_content,
    };
+    use crate::ast::types::Range;
    use crate::source_code::Locator;
-    use crate::types::Range;

    #[test]
    fn trailing_content() -> Result<()> {
--- a/crates/ruff_python_ast/src/logging.rs
+++ b/crates/ruff_python_ast/src/logging.rs
@@ -9,7 +9,7 @@ pub enum LoggingLevel {
 }

 impl LoggingLevel {
-    pub fn from_attribute(level: &str) -> Option<Self> {
+    pub fn from_str(level: &str) -> Option<Self> {
        match level {
            "debug" => Some(LoggingLevel::Debug),
            "critical" => Some(LoggingLevel::Critical),
--- a/crates/ruff_python_ast/src/lib.rs
+++ b/crates/ruff_python_ast/src/lib.rs
@@ -6,13 +6,9 @@ pub mod function_type;
 pub mod hashable;
 pub mod helpers;
 pub mod logging;
-pub mod newlines;
 pub mod operations;
 pub mod relocate;
-pub mod source_code;
-pub mod str;
 pub mod types;
 pub mod typing;
-pub mod visibility;
 pub mod visitor;
 pub mod whitespace;
--- a/crates/ruff_python_ast/src/operations.rs
+++ b/crates/ruff_python_ast/src/operations.rs
@@ -3,11 +3,11 @@ use rustc_hash::FxHashMap;
 use rustpython_parser::ast::{Cmpop, Constant, Expr, ExprKind, Located, Stmt, StmtKind};
 use rustpython_parser::{lexer, Mode, Tok};

-use crate::context::Context;
-use crate::helpers::any_over_expr;
-use crate::types::{BindingKind, Scope};
-use crate::visitor;
-use crate::visitor::Visitor;
+use crate::ast::context::Context;
+use crate::ast::helpers::any_over_expr;
+use crate::ast::types::{BindingKind, Scope};
+use crate::ast::visitor;
+use crate::ast::visitor::Visitor;

 bitflags! {
    #[derive(Default)]
@@ -348,7 +348,7 @@ pub fn locate_cmpops(contents: &str) -> Vec<LocatedCmpop> {
 mod tests {
    use rustpython_parser::ast::{Cmpop, Location};

-    use crate::operations::{locate_cmpops, LocatedCmpop};
+    use crate::ast::operations::{locate_cmpops, LocatedCmpop};

    #[test]
    fn locates_cmpops() {
--- a/crates/ruff_python_ast/src/relocate.rs
+++ b/crates/ruff_python_ast/src/relocate.rs
@@ -1,6 +1,6 @@
 use rustpython_parser::ast::{Expr, ExprKind, Keyword};

-use crate::types::Range;
+use crate::ast::types::Range;

 fn relocate_keyword(keyword: &mut Keyword, location: Range) {
    keyword.location = location.location;
--- a/crates/ruff_python_ast/src/types.rs
+++ b/crates/ruff_python_ast/src/types.rs
@@ -28,17 +28,13 @@ impl Range {
            end_location,
        }
    }
-}

-impl<T> From<&Located<T>> for Range {
-    fn from(located: &Located<T>) -> Self {
+    pub fn from_located<T, U>(located: &Located<T, U>) -> Self {
        Range::new(located.location, located.end_location.unwrap())
    }
-}

-impl<T> From<&Box<Located<T>>> for Range {
-    fn from(located: &Box<Located<T>>) -> Self {
-        Range::new(located.location, located.end_location.unwrap())
+    pub fn contains(&self, other: &Range) -> bool {
+        self.location <= other.location && self.end_location >= other.end_location
    }
 }

--- a/crates/ruff_python_ast/src/typing.rs
+++ b/crates/ruff_python_ast/src/typing.rs
@@ -1,7 +1,7 @@
-use ruff_python_stdlib::typing::{PEP_585_BUILTINS_ELIGIBLE, PEP_593_SUBSCRIPTS, SUBSCRIPTS};
+use ruff_python::typing::{PEP_585_BUILTINS_ELIGIBLE, PEP_593_SUBSCRIPTS, SUBSCRIPTS};
 use rustpython_parser::ast::{Expr, ExprKind};

-use crate::types::CallPath;
+use crate::ast::types::CallPath;

 pub enum Callable {
    ForwardRef,
--- a/crates/ruff_python_ast/src/visitor.rs
+++ b/crates/ruff_python_ast/src/visitor.rs
--- a/crates/ruff_python_ast/src/whitespace.rs
+++ b/crates/ruff_python_ast/src/whitespace.rs
@@ -1,12 +1,14 @@
+use std::str::Lines;
+
 use rustpython_parser::ast::{Located, Location};

+use crate::ast::types::Range;
 use crate::source_code::Locator;
-use crate::types::Range;

 /// Extract the leading indentation from a line.
 pub fn indentation<'a, T>(locator: &'a Locator, located: &'a Located<T>) -> Option<&'a str> {
-    let range = Range::from(located);
-    let indentation = locator.slice(Range::new(
+    let range = Range::from_located(located);
+    let indentation = locator.slice(&Range::new(
        Location::new(range.location.row(), 0),
        Location::new(range.location.row(), range.location.column()),
    ));
@@ -37,3 +39,38 @@ pub fn clean(indentation: &str) -> String {
        .map(|char| if char.is_whitespace() { char } else { ' ' })
        .collect()
 }
+
+/// Like `str#lines`, but includes a trailing newline as an empty line.
+pub struct LinesWithTrailingNewline<'a> {
+    trailing: Option<&'a str>,
+    underlying: Lines<'a>,
+}
+
+impl<'a> LinesWithTrailingNewline<'a> {
+    pub fn from(input: &'a str) -> LinesWithTrailingNewline<'a> {
+        LinesWithTrailingNewline {
+            underlying: input.lines(),
+            trailing: if input.ends_with('\n') {
+                Some("")
+            } else {
+                None
+            },
+        }
+    }
+}
+
+impl<'a> Iterator for LinesWithTrailingNewline<'a> {
+    type Item = &'a str;
+
+    #[inline]
+    fn next(&mut self) -> Option<&'a str> {
+        let mut next = self.underlying.next();
+        if next.is_none() {
+            if self.trailing.is_some() {
+                next = self.trailing;
+                self.trailing = None;
+            }
+        }
+        next
+    }
+}
--- a/crates/ruff/src/autofix/helpers.rs
+++ b/crates/ruff/src/autofix/helpers.rs
@@ -6,14 +6,14 @@ use libcst_native::{
 use rustpython_parser::ast::{ExcepthandlerKind, Expr, Keyword, Location, Stmt, StmtKind};
 use rustpython_parser::{lexer, Mode, Tok};

-use ruff_diagnostics::Fix;
-use ruff_python_ast::helpers;
-use ruff_python_ast::helpers::to_absolute;
-use ruff_python_ast::newlines::NewlineWithTrailingNewline;
-use ruff_python_ast::source_code::{Indexer, Locator, Stylist};
-
+use crate::ast::helpers;
+use crate::ast::helpers::to_absolute;
+use crate::ast::types::Range;
+use crate::ast::whitespace::LinesWithTrailingNewline;
 use crate::cst::helpers::compose_module_path;
 use crate::cst::matchers::match_module;
+use crate::fix::Fix;
+use crate::source_code::{Indexer, Locator, Stylist};

 /// Determine if a body contains only a single statement, taking into account
 /// deleted.
@@ -100,7 +100,7 @@ fn is_lone_child(child: &Stmt, parent: &Stmt, deleted: &[&Stmt]) -> Result<bool>
 /// of a multi-statement line.
 fn trailing_semicolon(stmt: &Stmt, locator: &Locator) -> Option<Location> {
    let contents = locator.skip(stmt.end_location.unwrap());
-    for (row, line) in NewlineWithTrailingNewline::from(contents).enumerate() {
+    for (row, line) in LinesWithTrailingNewline::from(contents).enumerate() {
        let trimmed = line.trim();
        if trimmed.starts_with(';') {
            let column = line
@@ -123,7 +123,7 @@ fn trailing_semicolon(stmt: &Stmt, locator: &Locator) -> Option<Location> {
 fn next_stmt_break(semicolon: Location, locator: &Locator) -> Location {
    let start_location = Location::new(semicolon.row(), semicolon.column() + 1);
    let contents = locator.skip(start_location);
-    for (row, line) in NewlineWithTrailingNewline::from(contents).enumerate() {
+    for (row, line) in LinesWithTrailingNewline::from(contents).enumerate() {
        let trimmed = line.trim();
        // Skip past any continuations.
        if trimmed.starts_with('\\') {
@@ -227,7 +227,7 @@ pub fn remove_unused_imports<'a>(
    indexer: &Indexer,
    stylist: &Stylist,
 ) -> Result<Fix> {
-    let module_text = locator.slice(stmt);
+    let module_text = locator.slice(&Range::from_located(stmt));
    let mut tree = match_module(module_text)?;

    let Some(Statement::Simple(body)) = tree.body.first_mut() else {
@@ -450,9 +450,8 @@ mod tests {
    use rustpython_parser as parser;
    use rustpython_parser::ast::Location;

-    use ruff_python_ast::source_code::Locator;
-
    use crate::autofix::helpers::{next_stmt_break, trailing_semicolon};
+    use crate::source_code::Locator;

    #[test]
    fn find_semicolon() -> Result<()> {
--- a/crates/ruff/src/autofix/mod.rs
+++ b/crates/ruff/src/autofix/mod.rs
@@ -4,12 +4,11 @@ use itertools::Itertools;
 use rustc_hash::FxHashMap;
 use rustpython_parser::ast::Location;

-use ruff_diagnostics::{Diagnostic, Fix};
-use ruff_python_ast::source_code::Locator;
-use ruff_python_ast::types::Range;
-
+use crate::ast::types::Range;
+use crate::fix::Fix;
 use crate::linter::FixTable;
-use crate::registry::AsRule;
+use crate::registry::Diagnostic;
+use crate::source_code::Locator;

 pub mod helpers;

@@ -55,7 +54,7 @@ fn apply_fixes<'a>(
        }

        // Add all contents from `last_pos` to `fix.location`.
-        let slice = locator.slice(Range::new(last_pos, fix.location));
+        let slice = locator.slice(&Range::new(last_pos, fix.location));
        output.push_str(slice);

        // Add the patch itself.
@@ -79,7 +78,7 @@ pub(crate) fn apply_fix(fix: &Fix, locator: &Locator) -> String {
    let mut output = String::with_capacity(locator.len());

    // Add all contents from `last_pos` to `fix.location`.
-    let slice = locator.slice(Range::new(Location::new(1, 0), fix.location));
+    let slice = locator.slice(&Range::new(Location::new(1, 0), fix.location));
    output.push_str(slice);

    // Add the patch itself.
@@ -96,38 +95,43 @@ pub(crate) fn apply_fix(fix: &Fix, locator: &Locator) -> String {
 mod tests {
    use rustpython_parser::ast::Location;

-    use ruff_diagnostics::Diagnostic;
-    use ruff_diagnostics::Fix;
-    use ruff_python_ast::source_code::Locator;
-
    use crate::autofix::{apply_fix, apply_fixes};
+    use crate::fix::Fix;
+    use crate::registry::Diagnostic;
    use crate::rules::pycodestyle::rules::NoNewLineAtEndOfFile;

-    fn create_diagnostics(fixes: impl IntoIterator<Item = Fix>) -> Vec<Diagnostic> {
-        fixes
-            .into_iter()
-            .map(|fix| Diagnostic {
+    use crate::source_code::Locator;
+
+    #[test]
+    fn empty_file() {
+        let fixes: Vec<Diagnostic> = vec![];
+        let locator = Locator::new(r#""#);
+        let (contents, fixed) = apply_fixes(fixes.iter(), &locator);
+        assert_eq!(contents, "");
+        assert_eq!(fixed.values().sum::<usize>(), 0);
+    }
+
+    impl From<Fix> for Diagnostic {
+        fn from(fix: Fix) -> Self {
+            Diagnostic {
                // The choice of rule here is arbitrary.
                kind: NoNewLineAtEndOfFile.into(),
                location: fix.location,
                end_location: fix.end_location,
                fix: Some(fix),
                parent: None,
-            })
-            .collect()
-    }
-
-    #[test]
-    fn empty_file() {
-        let locator = Locator::new(r#""#);
-        let diagnostics = create_diagnostics([]);
-        let (contents, fixed) = apply_fixes(diagnostics.iter(), &locator);
-        assert_eq!(contents, "");
-        assert_eq!(fixed.values().sum::<usize>(), 0);
+            }
+        }
    }

    #[test]
    fn apply_one_replacement() {
+        let fixes: Vec<Diagnostic> = vec![Fix {
+            content: "Bar".to_string(),
+            location: Location::new(1, 8),
+            end_location: Location::new(1, 14),
+        }
+        .into()];
        let locator = Locator::new(
            r#"
 class A(object):
@@ -135,12 +139,7 @@ class A(object):
 "#
            .trim(),
        );
-        let diagnostics = create_diagnostics([Fix {
-            content: "Bar".to_string(),
-            location: Location::new(1, 8),
-            end_location: Location::new(1, 14),
-        }]);
-        let (contents, fixed) = apply_fixes(diagnostics.iter(), &locator);
+        let (contents, fixed) = apply_fixes(fixes.iter(), &locator);
        assert_eq!(
            contents,
            r#"
@@ -154,6 +153,12 @@ class A(Bar):

    #[test]
    fn apply_one_removal() {
+        let fixes: Vec<Diagnostic> = vec![Fix {
+            content: String::new(),
+            location: Location::new(1, 7),
+            end_location: Location::new(1, 15),
+        }
+        .into()];
        let locator = Locator::new(
            r#"
 class A(object):
@@ -161,12 +166,7 @@ class A(object):
 "#
            .trim(),
        );
-        let diagnostics = create_diagnostics([Fix {
-            content: String::new(),
-            location: Location::new(1, 7),
-            end_location: Location::new(1, 15),
-        }]);
-        let (contents, fixed) = apply_fixes(diagnostics.iter(), &locator);
+        let (contents, fixed) = apply_fixes(fixes.iter(), &locator);
        assert_eq!(
            contents,
            r#"
@@ -180,6 +180,20 @@ class A:

    #[test]
    fn apply_two_removals() {
+        let fixes: Vec<Diagnostic> = vec![
+            Fix {
+                content: String::new(),
+                location: Location::new(1, 7),
+                end_location: Location::new(1, 16),
+            }
+            .into(),
+            Fix {
+                content: String::new(),
+                location: Location::new(1, 16),
+                end_location: Location::new(1, 23),
+            }
+            .into(),
+        ];
        let locator = Locator::new(
            r#"
 class A(object, object):
@@ -187,19 +201,7 @@ class A(object, object):
 "#
            .trim(),
        );
-        let diagnostics = create_diagnostics([
-            Fix {
-                content: String::new(),
-                location: Location::new(1, 7),
-                end_location: Location::new(1, 16),
-            },
-            Fix {
-                content: String::new(),
-                location: Location::new(1, 16),
-                end_location: Location::new(1, 23),
-            },
-        ]);
-        let (contents, fixed) = apply_fixes(diagnostics.iter(), &locator);
+        let (contents, fixed) = apply_fixes(fixes.iter(), &locator);

        assert_eq!(
            contents,
@@ -214,6 +216,20 @@ class A:

    #[test]
    fn ignore_overlapping_fixes() {
+        let fixes: Vec<Diagnostic> = vec![
+            Fix {
+                content: String::new(),
+                location: Location::new(1, 7),
+                end_location: Location::new(1, 15),
+            }
+            .into(),
+            Fix {
+                content: "ignored".to_string(),
+                location: Location::new(1, 9),
+                end_location: Location::new(1, 11),
+            }
+            .into(),
+        ];
        let locator = Locator::new(
            r#"
 class A(object):
@@ -221,19 +237,7 @@ class A(object):
 "#
            .trim(),
        );
-        let diagnostics = create_diagnostics([
-            Fix {
-                content: String::new(),
-                location: Location::new(1, 7),
-                end_location: Location::new(1, 15),
-            },
-            Fix {
-                content: "ignored".to_string(),
-                location: Location::new(1, 9),
-                end_location: Location::new(1, 11),
-            },
-        ]);
-        let (contents, fixed) = apply_fixes(diagnostics.iter(), &locator);
+        let (contents, fixed) = apply_fixes(fixes.iter(), &locator);
        assert_eq!(
            contents,
            r#"
--- a/crates/ruff/src/checkers/ast/deferred.rs
+++ b/crates/ruff/src/checkers/ast/deferred.rs
@@ -1,11 +1,10 @@
 use rustpython_parser::ast::{Expr, Stmt};

-use ruff_python_ast::types::Range;
-use ruff_python_ast::types::RefEquality;
-use ruff_python_ast::visibility::{Visibility, VisibleScope};
-
+use crate::ast::types::RefEquality;
 use crate::checkers::ast::AnnotationContext;
 use crate::docstrings::definition::Definition;
+use crate::visibility::{Visibility, VisibleScope};
+use crate::Range;

 type Context<'a> = (Vec<usize>, Vec<RefEquality<'a, Stmt>>);

--- a/crates/ruff/src/checkers/ast/mod.rs
+++ b/crates/ruff/src/checkers/ast/mod.rs
@@ -13,31 +13,23 @@ use rustpython_parser::ast::{
    Suite,
 };

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::context::Context;
-use ruff_python_ast::helpers::{
-    binding_range, extract_handled_exceptions, to_module_path, Exceptions,
-};
-use ruff_python_ast::operations::{extract_all_names, AllNamesFlags};
-use ruff_python_ast::relocate::relocate_expr;
-use ruff_python_ast::source_code::{Indexer, Locator, Stylist};
-use ruff_python_ast::types::{
+use ruff_python::builtins::{BUILTINS, MAGIC_GLOBALS};
+
+use crate::ast::context::Context;
+use crate::ast::helpers::{binding_range, extract_handled_exceptions, to_module_path, Exceptions};
+use crate::ast::operations::{extract_all_names, AllNamesFlags};
+use crate::ast::relocate::relocate_expr;
+use crate::ast::types::{
    Binding, BindingKind, ClassDef, ExecutionContext, FunctionDef, Lambda, Node, Range,
    RefEquality, Scope, ScopeKind,
 };
-use ruff_python_ast::typing::{match_annotated_subscript, Callable, SubscriptKind};
-use ruff_python_ast::visitor::{walk_excepthandler, walk_pattern, Visitor};
-use ruff_python_ast::{
-    branch_detection, cast, helpers, operations, str, typing, visibility, visitor,
-};
-use ruff_python_stdlib::builtins::{BUILTINS, MAGIC_GLOBALS};
-use ruff_python_stdlib::path::is_python_stub_file;
-
+use crate::ast::typing::{match_annotated_subscript, Callable, SubscriptKind};
+use crate::ast::visitor::{walk_excepthandler, walk_pattern, Visitor};
+use crate::ast::{branch_detection, cast, helpers, operations, typing, visitor};
 use crate::checkers::ast::deferred::Deferred;
-use crate::docstrings::definition::{
-    transition_scope, Definition, DefinitionKind, Docstring, Documentable,
-};
-use crate::registry::{AsRule, Rule};
+use crate::docstrings::definition::{Definition, DefinitionKind, Docstring, Documentable};
+use crate::registry::{Diagnostic, Rule};
+use crate::resolver::is_interface_definition_path;
 use crate::rules::{
    flake8_2020, flake8_annotations, flake8_bandit, flake8_blind_except, flake8_boolean_trap,
    flake8_bugbear, flake8_builtins, flake8_comprehensions, flake8_datetimez, flake8_debugger,
@@ -49,7 +41,9 @@ use crate::rules::{
 };
 use crate::settings::types::PythonVersion;
 use crate::settings::{flags, Settings};
-use crate::{autofix, docstrings, noqa};
+use crate::source_code::{Indexer, Locator, Stylist};
+use crate::visibility::transition_scope;
+use crate::{autofix, docstrings, noqa, visibility};

 mod deferred;

@@ -63,7 +57,7 @@ pub struct Checker<'a> {
    pub path: &'a Path,
    module_path: Option<Vec<String>>,
    package: Option<&'a Path>,
-    is_stub: bool,
+    is_interface_definition: bool,
    autofix: flags::Autofix,
    noqa: flags::Noqa,
    pub settings: &'a Settings,
@@ -102,7 +96,7 @@ impl<'a> Checker<'a> {
            path,
            package,
            module_path: module_path.clone(),
-            is_stub: is_python_stub_file(path),
+            is_interface_definition: is_interface_definition_path(path),
            locator,
            stylist: style,
            indexer,
@@ -199,7 +193,7 @@ where
                    // Add the binding to the current scope.
                    let context = self.ctx.execution_context();
                    let scope = &mut self.ctx.scopes[scope_index];
-                    let usage = Some((scope.id, Range::from(stmt)));
+                    let usage = Some((scope.id, Range::from_located(stmt)));
                    for (name, range) in names.iter().zip(ranges.iter()) {
                        let index = self.ctx.bindings.len();
                        self.ctx.bindings.push(Binding {
@@ -228,7 +222,7 @@ where
                if scope_index != GLOBAL_SCOPE_INDEX {
                    let context = self.ctx.execution_context();
                    let scope = &mut self.ctx.scopes[scope_index];
-                    let usage = Some((scope.id, Range::from(stmt)));
+                    let usage = Some((scope.id, Range::from_located(stmt)));
                    for (name, range) in names.iter().zip(ranges.iter()) {
                        // Add a binding to the current scope.
                        let index = self.ctx.bindings.len();
@@ -382,7 +376,7 @@ where
                    }
                }

-                if self.is_stub {
+                if self.is_interface_definition {
                    if self.settings.rules.enabled(&Rule::PassStatementStubBody) {
                        flake8_pyi::rules::pass_statement_stub_body(self, body);
                    }
@@ -669,7 +663,7 @@ where
                        runtime_usage: None,
                        synthetic_usage: None,
                        typing_usage: None,
-                        range: Range::from(stmt),
+                        range: Range::from_located(stmt),
                        source: Some(self.ctx.current_stmt().clone()),
                        context,
                    },
@@ -760,7 +754,7 @@ where
                    flake8_bugbear::rules::useless_expression(self, body);
                }

-                if !self.is_stub {
+                if !self.is_interface_definition {
                    if self
                        .settings
                        .rules
@@ -775,7 +769,7 @@ where
                        );
                    }
                }
-                if self.is_stub {
+                if self.is_interface_definition {
                    if self.settings.rules.enabled(&Rule::PassStatementStubBody) {
                        flake8_pyi::rules::pass_statement_stub_body(self, body);
                    }
@@ -866,10 +860,10 @@ where
                                        .last()
                                        .expect("No current scope found"))]
                                    .id,
-                                    Range::from(alias),
+                                    Range::from_located(alias),
                                )),
                                typing_usage: None,
-                                range: Range::from(alias),
+                                range: Range::from_located(alias),
                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
                            },
@@ -880,7 +874,7 @@ where
                        {
                            self.diagnostics.push(Diagnostic::new(
                                pyflakes::rules::LateFutureImport,
-                                Range::from(stmt),
+                                Range::from_located(stmt),
                            ));
                        }
                    } else if alias.node.name.contains('.') && alias.node.asname.is_none() {
@@ -901,13 +895,13 @@ where
                                            .last()
                                            .expect("No current scope found"))]
                                        .id,
-                                        Range::from(alias),
+                                        Range::from_located(alias),
                                    ))
                                } else {
                                    None
                                },
                                typing_usage: None,
-                                range: Range::from(alias),
+                                range: Range::from_located(alias),
                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
                            },
@@ -939,13 +933,13 @@ where
                                            .last()
                                            .expect("No current scope found"))]
                                        .id,
-                                        Range::from(alias),
+                                        Range::from_located(alias),
                                    ))
                                } else {
                                    None
                                },
                                typing_usage: None,
-                                range: Range::from(alias),
+                                range: Range::from_located(alias),
                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
                            },
@@ -1138,8 +1132,8 @@ where
                if self.settings.rules.enabled(&Rule::RewriteCElementTree) {
                    pyupgrade::rules::replace_c_element_tree(self, stmt);
                }
-                if self.settings.rules.enabled(&Rule::DeprecatedImport) {
-                    pyupgrade::rules::deprecated_import(
+                if self.settings.rules.enabled(&Rule::ImportReplacements) {
+                    pyupgrade::rules::import_replacements(
                        self,
                        stmt,
                        names,
@@ -1212,10 +1206,10 @@ where
                                        .last()
                                        .expect("No current scope found"))]
                                    .id,
-                                    Range::from(alias),
+                                    Range::from_located(alias),
                                )),
                                typing_usage: None,
-                                range: Range::from(alias),
+                                range: Range::from_located(alias),
                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
                            },
@@ -1234,7 +1228,7 @@ where
                        {
                            self.diagnostics.push(Diagnostic::new(
                                pyflakes::rules::LateFutureImport,
-                                Range::from(stmt),
+                                Range::from_located(stmt),
                            ));
                        }
                    } else if alias.node.name == "*" {
@@ -1251,13 +1245,13 @@ where
                                            .last()
                                            .expect("No current scope found"))]
                                        .id,
-                                        Range::from(alias),
+                                        Range::from_located(alias),
                                    ))
                                } else {
                                    None
                                },
                                typing_usage: None,
-                                range: Range::from(stmt),
+                                range: Range::from_located(stmt),
                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
                            },
@@ -1274,7 +1268,7 @@ where
                                            module.as_deref(),
                                        ),
                                    },
-                                    Range::from(stmt),
+                                    Range::from_located(stmt),
                                ));
                            }
                        }
@@ -1287,7 +1281,7 @@ where
                                        module.as_deref(),
                                    ),
                                },
-                                Range::from(stmt),
+                                Range::from_located(stmt),
                            ));
                        }

@@ -1329,13 +1323,13 @@ where
                                            .last()
                                            .expect("No current scope found"))]
                                        .id,
-                                        Range::from(alias),
+                                        Range::from_located(alias),
                                    ))
                                } else {
                                    None
                                },
                                typing_usage: None,
-                                range: Range::from(alias),
+                                range: Range::from_located(alias),

                                source: Some(self.ctx.current_stmt().clone()),
                                context: self.ctx.execution_context(),
@@ -1505,7 +1499,7 @@ where
                }
                if self.settings.rules.enabled(&Rule::OSErrorAlias) {
                    if let Some(item) = exc {
-                        pyupgrade::rules::os_error_alias_raise(self, item);
+                        pyupgrade::rules::os_error_alias(self, &item);
                    }
                }
                if self.settings.rules.enabled(&Rule::RaiseVanillaClass) {
@@ -1757,7 +1751,7 @@ where
                    flake8_bugbear::rules::redundant_tuple_in_exception_handler(self, handlers);
                }
                if self.settings.rules.enabled(&Rule::OSErrorAlias) {
-                    pyupgrade::rules::os_error_alias_handlers(self, handlers);
+                    pyupgrade::rules::os_error_alias(self, &handlers);
                }
                if self.settings.rules.enabled(&Rule::AssertInExcept) {
                    self.diagnostics.extend(
@@ -1809,7 +1803,7 @@ where
                    }
                }

-                if self.is_stub {
+                if self.is_interface_definition {
                    if self.settings.rules.enabled(&Rule::PrefixTypeParams) {
                        flake8_pyi::rules::prefix_type_params(self, value, targets);
                    }
@@ -1957,7 +1951,7 @@ where
                            runtime_usage: None,
                            synthetic_usage: None,
                            typing_usage: None,
-                            range: Range::from(stmt),
+                            range: Range::from_located(stmt),
                            source: Some(RefEquality(stmt)),
                            context: self.ctx.execution_context(),
                        });
@@ -2022,7 +2016,7 @@ where
                            runtime_usage: None,
                            synthetic_usage: None,
                            typing_usage: None,
-                            range: Range::from(*stmt),
+                            range: Range::from_located(stmt),
                            source: Some(RefEquality(stmt)),
                            context: self.ctx.execution_context(),
                        });
@@ -2095,7 +2089,7 @@ where
                        let baseclasses = &self
                            .settings
                            .flake8_type_checking
-                            .runtime_evaluated_base_classes;
+                            .runtime_evaluated_baseclasses;
                        let decorators = &self
                            .settings
                            .flake8_type_checking
@@ -2132,7 +2126,7 @@ where
            StmtKind::If { test, body, orelse } => {
                self.visit_expr(test);

-                if flake8_type_checking::helpers::is_type_checking_block(&self.ctx, test) {
+                if flake8_type_checking::helpers::is_type_checking_block(self, test) {
                    if self.settings.rules.enabled(&Rule::EmptyTypeCheckingBlock) {
                        flake8_type_checking::rules::empty_type_checking_block(self, stmt, body);
                    }
@@ -2165,7 +2159,7 @@ where
                        runtime_usage: None,
                        synthetic_usage: None,
                        typing_usage: None,
-                        range: Range::from(stmt),
+                        range: Range::from_located(stmt),
                        source: Some(self.ctx.current_stmt().clone()),
                        context: self.ctx.execution_context(),
                    },
@@ -2195,7 +2189,7 @@ where
            } = &expr.node
            {
                self.deferred.string_type_definitions.push((
-                    Range::from(expr),
+                    Range::from_located(expr),
                    value,
                    (self.ctx.in_annotation, self.ctx.in_type_checking_block),
                    (self.ctx.scope_stack.clone(), self.ctx.parents.clone()),
@@ -2261,7 +2255,7 @@ where
                        elts,
                        check_too_many_expressions,
                        check_two_starred_expressions,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    ) {
                        self.diagnostics.push(diagnostic);
                    }
@@ -2296,9 +2290,10 @@ where
                    }
                    ExprContext::Store => {
                        if self.settings.rules.enabled(&Rule::AmbiguousVariableName) {
-                            if let Some(diagnostic) =
-                                pycodestyle::rules::ambiguous_variable_name(id, Range::from(expr))
-                            {
+                            if let Some(diagnostic) = pycodestyle::rules::ambiguous_variable_name(
+                                id,
+                                Range::from_located(expr),
+                            ) {
                                self.diagnostics.push(diagnostic);
                            }
                        }
@@ -2383,7 +2378,7 @@ where
                        {
                            if attr == "format" {
                                // "...".format(...) call
-                                let location = Range::from(expr);
+                                let location = Range::from_located(expr);
                                match pyflakes::format::FormatSummary::try_from(value.as_ref()) {
                                    Err(e) => {
                                        if self
@@ -2484,7 +2479,7 @@ where
                    pyupgrade::rules::replace_stdout_stderr(self, expr, func, keywords);
                }
                if self.settings.rules.enabled(&Rule::OSErrorAlias) {
-                    pyupgrade::rules::os_error_alias_call(self, func);
+                    pyupgrade::rules::os_error_alias(self, &expr);
                }
                if self.settings.rules.enabled(&Rule::IsinstanceWithTuple)
                    && self.settings.target_version >= PythonVersion::Py310
@@ -2779,14 +2774,22 @@ where
                        func,
                        args,
                        keywords,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }
                if self.settings.rules.enabled(&Rule::CallDatetimeToday) {
-                    flake8_datetimez::rules::call_datetime_today(self, func, Range::from(expr));
+                    flake8_datetimez::rules::call_datetime_today(
+                        self,
+                        func,
+                        Range::from_located(expr),
+                    );
                }
                if self.settings.rules.enabled(&Rule::CallDatetimeUtcnow) {
-                    flake8_datetimez::rules::call_datetime_utcnow(self, func, Range::from(expr));
+                    flake8_datetimez::rules::call_datetime_utcnow(
+                        self,
+                        func,
+                        Range::from_located(expr),
+                    );
                }
                if self
                    .settings
@@ -2796,7 +2799,7 @@ where
                    flake8_datetimez::rules::call_datetime_utcfromtimestamp(
                        self,
                        func,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }
                if self
@@ -2809,7 +2812,7 @@ where
                        func,
                        args,
                        keywords,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }
                if self
@@ -2822,7 +2825,7 @@ where
                        func,
                        args,
                        keywords,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }
                if self
@@ -2834,14 +2837,18 @@ where
                        self,
                        func,
                        args,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }
                if self.settings.rules.enabled(&Rule::CallDateToday) {
-                    flake8_datetimez::rules::call_date_today(self, func, Range::from(expr));
+                    flake8_datetimez::rules::call_date_today(self, func, Range::from_located(expr));
                }
                if self.settings.rules.enabled(&Rule::CallDateFromtimestamp) {
-                    flake8_datetimez::rules::call_date_fromtimestamp(self, func, Range::from(expr));
+                    flake8_datetimez::rules::call_date_fromtimestamp(
+                        self,
+                        func,
+                        Range::from_located(expr),
+                    );
                }

                // pygrep-hooks
@@ -2866,12 +2873,6 @@ where
                if self.settings.rules.enabled(&Rule::BadStrStripCall) {
                    pylint::rules::bad_str_strip_call(self, func, args);
                }
-                if self.settings.rules.enabled(&Rule::InvalidEnvvarDefault) {
-                    pylint::rules::invalid_envvar_default(self, func, args, keywords);
-                }
-                if self.settings.rules.enabled(&Rule::InvalidEnvvarValue) {
-                    pylint::rules::invalid_envvar_value(self, func, args, keywords);
-                }

                // flake8-pytest-style
                if self.settings.rules.enabled(&Rule::PatchWithLambda) {
@@ -3076,7 +3077,7 @@ where
                            .rules
                            .enabled(&Rule::PercentFormatUnsupportedFormatCharacter)
                    {
-                        let location = Range::from(expr);
+                        let location = Range::from_located(expr);
                        match pyflakes::cformat::CFormatSummary::try_from(value.as_str()) {
                            Err(CFormatError {
                                typ: CFormatErrorType::UnsupportedFormatChar(c),
@@ -3265,7 +3266,7 @@ where
                        left,
                        ops,
                        comparators,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    );
                }

@@ -3273,7 +3274,7 @@ where
                    self.diagnostics.extend(pycodestyle::rules::type_comparison(
                        ops,
                        comparators,
-                        Range::from(expr),
+                        Range::from_located(expr),
                    ));
                }

@@ -3305,10 +3306,6 @@ where
                    pylint::rules::comparison_of_constant(self, left, ops, comparators);
                }

-                if self.settings.rules.enabled(&Rule::CompareToEmptyString) {
-                    pylint::rules::compare_to_empty_string(self, left, ops, comparators);
-                }
-
                if self.settings.rules.enabled(&Rule::MagicValueComparison) {
                    pylint::rules::magic_value_comparison(self, left, comparators);
                }
@@ -3321,7 +3318,7 @@ where
                    flake8_simplify::rules::yoda_conditions(self, expr, left, ops, comparators);
                }

-                if self.is_stub {
+                if self.is_interface_definition {
                    if self
                        .settings
                        .rules
@@ -3354,7 +3351,7 @@ where
            } => {
                if self.ctx.in_type_definition && !self.ctx.in_literal {
                    self.deferred.string_type_definitions.push((
-                        Range::from(expr),
+                        Range::from_located(expr),
                        value,
                        (self.ctx.in_annotation, self.ctx.in_type_checking_block),
                        (self.ctx.scope_stack.clone(), self.ctx.parents.clone()),
@@ -3367,7 +3364,7 @@ where
                {
                    if let Some(diagnostic) = flake8_bandit::rules::hardcoded_bind_all_interfaces(
                        value,
-                        &Range::from(expr),
+                        &Range::from_located(expr),
                    ) {
                        self.diagnostics.push(diagnostic);
                    }
@@ -3441,7 +3438,7 @@ where
                    pylint::rules::merge_isinstance(self, expr, op, values);
                }
                if self.settings.rules.enabled(&Rule::SingleStartsEndsWith) {
-                    flake8_pie::rules::single_starts_ends_with(self, expr);
+                    flake8_pie::rules::single_starts_ends_with(self, values, op);
                }
                if self.settings.rules.enabled(&Rule::DuplicateIsinstanceCall) {
                    flake8_simplify::rules::duplicate_isinstance_call(self, expr);
@@ -3777,13 +3774,6 @@ where
                if self.settings.rules.enabled(&Rule::ExceptWithEmptyTuple) {
                    flake8_bugbear::rules::except_with_empty_tuple(self, excepthandler);
                }
-                if self
-                    .settings
-                    .rules
-                    .enabled(&Rule::ExceptWithNonExceptionClasses)
-                {
-                    flake8_bugbear::rules::except_with_non_exception_classes(self, excepthandler);
-                }
                if self.settings.rules.enabled(&Rule::ReraiseNoCause) {
                    tryceratops::rules::reraise_no_cause(self, body);
                }
@@ -3913,7 +3903,7 @@ where
            flake8_bugbear::rules::function_call_argument_default(self, arguments);
        }

-        if self.is_stub {
+        if self.is_interface_definition {
            if self
                .settings
                .rules
@@ -3922,7 +3912,7 @@ where
                flake8_pyi::rules::typed_argument_simple_defaults(self, arguments);
            }
        }
-        if self.is_stub {
+        if self.is_interface_definition {
            if self.settings.rules.enabled(&Rule::ArgumentSimpleDefaults) {
                flake8_pyi::rules::argument_simple_defaults(self, arguments);
            }
@@ -3957,7 +3947,7 @@ where
                runtime_usage: None,
                synthetic_usage: None,
                typing_usage: None,
-                range: Range::from(arg),
+                range: Range::from_located(arg),
                source: Some(self.ctx.current_stmt().clone()),
                context: self.ctx.execution_context(),
            },
@@ -3965,7 +3955,7 @@ where

        if self.settings.rules.enabled(&Rule::AmbiguousVariableName) {
            if let Some(diagnostic) =
-                pycodestyle::rules::ambiguous_variable_name(&arg.node.arg, Range::from(arg))
+                pycodestyle::rules::ambiguous_variable_name(&arg.node.arg, Range::from_located(arg))
            {
                self.diagnostics.push(diagnostic);
            }
@@ -4000,7 +3990,7 @@ where
                    runtime_usage: None,
                    synthetic_usage: None,
                    typing_usage: None,
-                    range: Range::from(pattern),
+                    range: Range::from_located(pattern),
                    source: Some(self.ctx.current_stmt().clone()),
                    context: self.ctx.execution_context(),
                },
@@ -4211,7 +4201,7 @@ impl<'a> Checker<'a> {
            if let Some(index) = scope.bindings.get(&id.as_str()) {
                // Mark the binding as used.
                let context = self.ctx.execution_context();
-                self.ctx.bindings[*index].mark_used(scope_id, Range::from(expr), context);
+                self.ctx.bindings[*index].mark_used(scope_id, Range::from_located(expr), context);

                if self.ctx.bindings[*index].kind.is_annotation()
                    && !self.ctx.in_deferred_string_type_definition
@@ -4241,7 +4231,7 @@ impl<'a> Checker<'a> {
                            if let Some(index) = scope.bindings.get(full_name) {
                                self.ctx.bindings[*index].mark_used(
                                    scope_id,
-                                    Range::from(expr),
+                                    Range::from_located(expr),
                                    context,
                                );
                            }
@@ -4258,7 +4248,7 @@ impl<'a> Checker<'a> {
                            if let Some(index) = scope.bindings.get(full_name.as_str()) {
                                self.ctx.bindings[*index].mark_used(
                                    scope_id,
-                                    Range::from(expr),
+                                    Range::from_located(expr),
                                    context,
                                );
                            }
@@ -4300,7 +4290,7 @@ impl<'a> Checker<'a> {
                        name: id.to_string(),
                        sources: from_list,
                    },
-                    Range::from(expr),
+                    Range::from_located(expr),
                ));
            }
            return;
@@ -4331,7 +4321,7 @@ impl<'a> Checker<'a> {

            self.diagnostics.push(Diagnostic::new(
                pyflakes::rules::UndefinedName { name: id.clone() },
-                Range::from(expr),
+                Range::from_located(expr),
            ));
        }
    }
@@ -4403,7 +4393,7 @@ impl<'a> Checker<'a> {
                    runtime_usage: None,
                    synthetic_usage: None,
                    typing_usage: None,
-                    range: Range::from(expr),
+                    range: Range::from_located(expr),
                    source: Some(self.ctx.current_stmt().clone()),
                    context: self.ctx.execution_context(),
                },
@@ -4423,7 +4413,7 @@ impl<'a> Checker<'a> {
                    runtime_usage: None,
                    synthetic_usage: None,
                    typing_usage: None,
-                    range: Range::from(expr),
+                    range: Range::from_located(expr),
                    source: Some(self.ctx.current_stmt().clone()),
                    context: self.ctx.execution_context(),
                },
@@ -4439,7 +4429,7 @@ impl<'a> Checker<'a> {
                    runtime_usage: None,
                    synthetic_usage: None,
                    typing_usage: None,
-                    range: Range::from(expr),
+                    range: Range::from_located(expr),
                    source: Some(self.ctx.current_stmt().clone()),
                    context: self.ctx.execution_context(),
                },
@@ -4504,7 +4494,7 @@ impl<'a> Checker<'a> {
                        runtime_usage: None,
                        synthetic_usage: None,
                        typing_usage: None,
-                        range: Range::from(expr),
+                        range: Range::from_located(expr),
                        source: Some(self.ctx.current_stmt().clone()),
                        context: self.ctx.execution_context(),
                    },
@@ -4520,7 +4510,7 @@ impl<'a> Checker<'a> {
                runtime_usage: None,
                synthetic_usage: None,
                typing_usage: None,
-                range: Range::from(expr),
+                range: Range::from_located(expr),
                source: Some(self.ctx.current_stmt().clone()),
                context: self.ctx.execution_context(),
            },
@@ -4551,7 +4541,7 @@ impl<'a> Checker<'a> {
            pyflakes::rules::UndefinedName {
                name: id.to_string(),
            },
-            Range::from(expr),
+            Range::from_located(expr),
        ));
    }

@@ -4685,37 +4675,31 @@ impl<'a> Checker<'a> {
        while let Some((scopes, ..)) = self.deferred.assignments.pop() {
            let scope_index = scopes[scopes.len() - 1];
            let parent_scope_index = scopes[scopes.len() - 2];
-
-            // pyflakes
            if self.settings.rules.enabled(&Rule::UnusedVariable) {
                pyflakes::rules::unused_variable(self, scope_index);
            }
            if self.settings.rules.enabled(&Rule::UnusedAnnotation) {
                pyflakes::rules::unused_annotation(self, scope_index);
            }
-
-            if !self.is_stub {
-                // flake8-unused-arguments
-                if self.settings.rules.enabled(&Rule::UnusedFunctionArgument)
-                    || self.settings.rules.enabled(&Rule::UnusedMethodArgument)
-                    || self
-                        .settings
-                        .rules
-                        .enabled(&Rule::UnusedClassMethodArgument)
-                    || self
-                        .settings
-                        .rules
-                        .enabled(&Rule::UnusedStaticMethodArgument)
-                    || self.settings.rules.enabled(&Rule::UnusedLambdaArgument)
-                {
-                    self.diagnostics
-                        .extend(flake8_unused_arguments::rules::unused_arguments(
-                            self,
-                            &self.ctx.scopes[parent_scope_index],
-                            &self.ctx.scopes[scope_index],
-                            &self.ctx.bindings,
-                        ));
-                }
+            if self.settings.rules.enabled(&Rule::UnusedFunctionArgument)
+                || self.settings.rules.enabled(&Rule::UnusedMethodArgument)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::UnusedClassMethodArgument)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::UnusedStaticMethodArgument)
+                || self.settings.rules.enabled(&Rule::UnusedLambdaArgument)
+            {
+                self.diagnostics
+                    .extend(flake8_unused_arguments::rules::unused_arguments(
+                        self,
+                        &self.ctx.scopes[parent_scope_index],
+                        &self.ctx.scopes[scope_index],
+                        &self.ctx.bindings,
+                    ));
            }
        }
    }
@@ -4743,33 +4727,30 @@ impl<'a> Checker<'a> {
    }

    fn check_dead_scopes(&mut self) {
-        let enforce_typing_imports = !self.is_stub
-            && (self
-                .settings
-                .rules
-                .enabled(&Rule::GlobalVariableNotAssigned)
-                || self
-                    .settings
-                    .rules
-                    .enabled(&Rule::RuntimeImportInTypeCheckingBlock)
-                || self
-                    .settings
-                    .rules
-                    .enabled(&Rule::TypingOnlyFirstPartyImport)
-                || self
-                    .settings
-                    .rules
-                    .enabled(&Rule::TypingOnlyThirdPartyImport)
-                || self
-                    .settings
-                    .rules
-                    .enabled(&Rule::TypingOnlyStandardLibraryImport));
-
        if !(self.settings.rules.enabled(&Rule::UnusedImport)
            || self.settings.rules.enabled(&Rule::ImportStarUsage)
            || self.settings.rules.enabled(&Rule::RedefinedWhileUnused)
            || self.settings.rules.enabled(&Rule::UndefinedExport)
-            || enforce_typing_imports)
+            || self
+                .settings
+                .rules
+                .enabled(&Rule::GlobalVariableNotAssigned)
+            || self
+                .settings
+                .rules
+                .enabled(&Rule::RuntimeImportInTypeCheckingBlock)
+            || self
+                .settings
+                .rules
+                .enabled(&Rule::TypingOnlyFirstPartyImport)
+            || self
+                .settings
+                .rules
+                .enabled(&Rule::TypingOnlyThirdPartyImport)
+            || self
+                .settings
+                .rules
+                .enabled(&Rule::TypingOnlyStandardLibraryImport))
        {
            return;
        }
@@ -4818,10 +4799,26 @@ impl<'a> Checker<'a> {
        // Identify any valid runtime imports. If a module is imported at runtime, and
        // used at runtime, then by default, we avoid flagging any other
        // imports from that model as typing-only.
-        let runtime_imports: Vec<Vec<&Binding>> = if enforce_typing_imports {
-            if self.settings.flake8_type_checking.strict {
-                vec![]
-            } else {
+        let runtime_imports: Vec<Vec<&Binding>> = if self.settings.flake8_type_checking.strict {
+            vec![]
+        } else {
+            if self
+                .settings
+                .rules
+                .enabled(&Rule::RuntimeImportInTypeCheckingBlock)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyFirstPartyImport)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyThirdPartyImport)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyStandardLibraryImport)
+            {
                self.ctx
                    .scopes
                    .iter()
@@ -4836,9 +4833,9 @@ impl<'a> Checker<'a> {
                            .collect::<Vec<_>>()
                    })
                    .collect::<Vec<_>>()
+            } else {
+                vec![]
            }
-        } else {
-            vec![]
        };

        let mut diagnostics: Vec<Diagnostic> = vec![];
@@ -4960,7 +4957,23 @@ impl<'a> Checker<'a> {
                }
            }

-            if enforce_typing_imports {
+            if self
+                .settings
+                .rules
+                .enabled(&Rule::RuntimeImportInTypeCheckingBlock)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyFirstPartyImport)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyThirdPartyImport)
+                || self
+                    .settings
+                    .rules
+                    .enabled(&Rule::TypingOnlyStandardLibraryImport)
+            {
                let runtime_imports: Vec<&Binding> = if self.settings.flake8_type_checking.strict {
                    vec![]
                } else {
@@ -4977,9 +4990,7 @@ impl<'a> Checker<'a> {
                    if let Some(diagnostic) =
                        flake8_type_checking::rules::runtime_import_in_type_checking_block(binding)
                    {
-                        if self.settings.rules.enabled(diagnostic.kind.rule()) {
-                            diagnostics.push(diagnostic);
-                        }
+                        diagnostics.push(diagnostic);
                    }
                    if let Some(diagnostic) =
                        flake8_type_checking::rules::typing_only_runtime_import(
@@ -5276,7 +5287,7 @@ impl<'a> Checker<'a> {
                }
                overloaded_name = flake8_annotations::helpers::overloaded_name(self, &definition);
            }
-            if self.is_stub {
+            if self.is_interface_definition {
                if self.settings.rules.enabled(&Rule::DocstringInStub) {
                    flake8_pyi::rules::docstring_in_stubs(self, definition.docstring);
                }
@@ -5299,13 +5310,13 @@ impl<'a> Checker<'a> {

                // Extract a `Docstring` from a `Definition`.
                let expr = definition.docstring.unwrap();
-                let contents = self.locator.slice(expr);
-                let indentation = self.locator.slice(Range::new(
+                let contents = self.locator.slice(&Range::from_located(expr));
+                let indentation = self.locator.slice(&Range::new(
                    Location::new(expr.location.row(), 0),
                    Location::new(expr.location.row(), expr.location.column()),
                ));

-                let body = str::raw_contents(contents);
+                let body = pydocstyle::helpers::raw_contents(contents);
                let docstring = Docstring {
                    kind: definition.kind,
                    expr,
--- a/crates/ruff/src/checkers/filesystem.rs
+++ b/crates/ruff/src/checkers/filesystem.rs
@@ -1,8 +1,6 @@
 use std::path::Path;

-use ruff_diagnostics::Diagnostic;
-
-use crate::registry::Rule;
+use crate::registry::{Diagnostic, Rule};
 use crate::rules::flake8_no_pep420::rules::implicit_namespace_package;
 use crate::rules::pep8_naming::rules::invalid_module_name;
 use crate::settings::Settings;
--- a/crates/ruff/src/checkers/imports.rs
+++ b/crates/ruff/src/checkers/imports.rs
@@ -4,15 +4,13 @@ use std::path::Path;

 use rustpython_parser::ast::Suite;

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::source_code::{Indexer, Locator, Stylist};
-use ruff_python_ast::visitor::Visitor;
-
+use crate::ast::visitor::Visitor;
 use crate::directives::IsortDirectives;
-use crate::registry::Rule;
+use crate::registry::{Diagnostic, Rule};
 use crate::rules::isort;
 use crate::rules::isort::track::{Block, ImportTracker};
 use crate::settings::{flags, Settings};
+use crate::source_code::{Indexer, Locator, Stylist};

 #[allow(clippy::too_many_arguments)]
 pub fn check_imports(
--- a/crates/ruff/src/checkers/logical_lines.rs
+++ b/crates/ruff/src/checkers/logical_lines.rs
@@ -5,11 +5,8 @@ use itertools::Itertools;
 use rustpython_parser::ast::Location;
 use rustpython_parser::lexer::LexResult;

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::source_code::{Locator, Stylist};
-use ruff_python_ast::types::Range;
-
-use crate::registry::{AsRule, Rule};
+use crate::ast::types::Range;
+use crate::registry::{Diagnostic, Rule};
 use crate::rules::pycodestyle::logical_lines::{iter_logical_lines, TokenFlags};
 use crate::rules::pycodestyle::rules::{
    extraneous_whitespace, indentation, missing_whitespace, missing_whitespace_after_keyword,
@@ -18,6 +15,7 @@ use crate::rules::pycodestyle::rules::{
    whitespace_before_parameters,
 };
 use crate::settings::{flags, Settings};
+use crate::source_code::{Locator, Stylist};

 /// Return the amount of indentation, expanding tabs to the next multiple of 8.
 fn expand_indent(mut line: &str) -> usize {
@@ -59,7 +57,7 @@ pub fn check_logical_lines(

        // Extract the indentation level.
        let start_loc = line.mapping[0].1;
-        let start_line = locator.slice(Range::new(Location::new(start_loc.row(), 0), start_loc));
+        let start_line = locator.slice(&Range::new(Location::new(start_loc.row(), 0), start_loc));
        let indent_level = expand_indent(start_line);
        let indent_size = 4;

@@ -227,9 +225,8 @@ mod tests {
    use rustpython_parser::lexer::LexResult;
    use rustpython_parser::{lexer, Mode};

-    use ruff_python_ast::source_code::Locator;
-
    use crate::checkers::logical_lines::iter_logical_lines;
+    use crate::source_code::Locator;

    #[test]
    fn split_logical_lines() {
--- a/crates/ruff/src/checkers/noqa.rs
+++ b/crates/ruff/src/checkers/noqa.rs
@@ -4,14 +4,12 @@ use log::warn;
 use nohash_hasher::IntMap;
 use rustpython_parser::ast::Location;

-use ruff_diagnostics::{Diagnostic, Fix};
-use ruff_python_ast::newlines::StrExt;
-use ruff_python_ast::types::Range;
-
+use crate::ast::types::Range;
 use crate::codes::NoqaCode;
+use crate::fix::Fix;
 use crate::noqa;
 use crate::noqa::{extract_file_exemption, Directive, Exemption};
-use crate::registry::{AsRule, Rule};
+use crate::registry::{Diagnostic, DiagnosticKind, Rule};
 use crate::rule_redirects::get_redirect_target;
 use crate::rules::ruff::rules::{UnusedCodes, UnusedNOQA};
 use crate::settings::{flags, Settings};
@@ -23,7 +21,7 @@ pub fn check_noqa(
    noqa_line_for: &IntMap<usize, usize>,
    settings: &Settings,
    autofix: flags::Autofix,
-) -> Vec<usize> {
+) {
    let enforce_noqa = settings.rules.enabled(&Rule::UnusedNOQA);

    // Whether the file is exempted from all checks.
@@ -39,7 +37,7 @@ pub fn check_noqa(
    // Indices of diagnostics that were ignored by a `noqa` directive.
    let mut ignored_diagnostics = vec![];

-    let lines: Vec<&str> = contents.universal_newlines().collect();
+    let lines: Vec<&str> = contents.lines().collect();
    for lineno in commented_lines {
        match extract_file_exemption(lines[lineno - 1]) {
            Exemption::All => {
@@ -67,7 +65,7 @@ pub fn check_noqa(

    // Remove any ignored diagnostics.
    for (index, diagnostic) in diagnostics.iter().enumerate() {
-        if matches!(diagnostic.kind.rule(), Rule::BlanketNOQA) {
+        if matches!(diagnostic.kind, DiagnosticKind::BlanketNOQA(..)) {
            continue;
        }

@@ -98,7 +96,7 @@ pub fn check_noqa(
                        ignored_diagnostics.push(index);
                        continue;
                    }
-                    (Directive::Codes(.., codes, _), matches) => {
+                    (Directive::Codes(.., codes), matches) => {
                        if noqa::includes(diagnostic.kind.rule(), codes) {
                            matches.push(diagnostic.kind.rule().noqa_code());
                            ignored_diagnostics.push(index);
@@ -125,7 +123,7 @@ pub fn check_noqa(
                    ignored_diagnostics.push(index);
                    continue;
                }
-                (Directive::Codes(.., codes, _), matches) => {
+                (Directive::Codes(.., codes), matches) => {
                    if noqa::includes(diagnostic.kind.rule(), codes) {
                        matches.push(diagnostic.kind.rule().noqa_code());
                        ignored_diagnostics.push(index);
@@ -141,7 +139,7 @@ pub fn check_noqa(
    if enforce_noqa {
        for (row, (directive, matches)) in noqa_directives {
            match directive {
-                Directive::All(leading_spaces, start_byte, end_byte, trailing_spaces) => {
+                Directive::All(spaces, start_byte, end_byte) => {
                    if matches.is_empty() {
                        let start = lines[row][..start_byte].chars().count();
                        let end = start + lines[row][start_byte..end_byte].chars().count();
@@ -151,27 +149,15 @@ pub fn check_noqa(
                            Range::new(Location::new(row + 1, start), Location::new(row + 1, end)),
                        );
                        if autofix.into() && settings.rules.should_fix(diagnostic.kind.rule()) {
-                            if start - leading_spaces == 0 && end == lines[row].chars().count() {
-                                diagnostic.amend(Fix::deletion(
-                                    Location::new(row + 1, 0),
-                                    Location::new(row + 2, 0),
-                                ));
-                            } else if end == lines[row].chars().count() {
-                                diagnostic.amend(Fix::deletion(
-                                    Location::new(row + 1, start - leading_spaces),
-                                    Location::new(row + 1, end + trailing_spaces),
-                                ));
-                            } else {
-                                diagnostic.amend(Fix::deletion(
-                                    Location::new(row + 1, start),
-                                    Location::new(row + 1, end + trailing_spaces),
-                                ));
-                            }
+                            diagnostic.amend(Fix::deletion(
+                                Location::new(row + 1, start - spaces),
+                                Location::new(row + 1, lines[row].chars().count()),
+                            ));
                        }
                        diagnostics.push(diagnostic);
                    }
                }
-                Directive::Codes(leading_spaces, start_byte, end_byte, codes, trailing_spaces) => {
+                Directive::Codes(spaces, start_byte, end_byte, codes) => {
                    let mut disabled_codes = vec![];
                    let mut unknown_codes = vec![];
                    let mut unmatched_codes = vec![];
@@ -231,28 +217,15 @@ pub fn check_noqa(
                        );
                        if autofix.into() && settings.rules.should_fix(diagnostic.kind.rule()) {
                            if valid_codes.is_empty() {
-                                if start - leading_spaces == 0 && end == lines[row].chars().count()
-                                {
-                                    diagnostic.amend(Fix::deletion(
-                                        Location::new(row + 1, 0),
-                                        Location::new(row + 2, 0),
-                                    ));
-                                } else if end == lines[row].chars().count() {
-                                    diagnostic.amend(Fix::deletion(
-                                        Location::new(row + 1, start - leading_spaces),
-                                        Location::new(row + 1, end + trailing_spaces),
-                                    ));
-                                } else {
-                                    diagnostic.amend(Fix::deletion(
-                                        Location::new(row + 1, start),
-                                        Location::new(row + 1, end + trailing_spaces),
-                                    ));
-                                }
+                                diagnostic.amend(Fix::deletion(
+                                    Location::new(row + 1, start - spaces),
+                                    Location::new(row + 1, lines[row].chars().count()),
+                                ));
                            } else {
                                diagnostic.amend(Fix::replacement(
                                    format!("# noqa: {}", valid_codes.join(", ")),
                                    Location::new(row + 1, start),
-                                    Location::new(row + 1, end),
+                                    Location::new(row + 1, lines[row].chars().count()),
                                ));
                            }
                        }
@@ -265,5 +238,7 @@ pub fn check_noqa(
    }

    ignored_diagnostics.sort_unstable();
-    ignored_diagnostics
+    for index in ignored_diagnostics.iter().rev() {
+        diagnostics.swap_remove(*index);
+    }
 }
--- a/crates/ruff/src/checkers/physical_lines.rs
+++ b/crates/ruff/src/checkers/physical_lines.rs
@@ -2,11 +2,7 @@

 use std::path::Path;

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::newlines::StrExt;
-use ruff_python_ast::source_code::{Locator, Stylist};
-
-use crate::registry::Rule;
+use crate::registry::{Diagnostic, Rule};
 use crate::rules::flake8_executable::helpers::{extract_shebang, ShebangDirective};
 use crate::rules::flake8_executable::rules::{
    shebang_missing, shebang_newline, shebang_not_executable, shebang_python, shebang_whitespace,
@@ -19,11 +15,12 @@ use crate::rules::pygrep_hooks::rules::{blanket_noqa, blanket_type_ignore};
 use crate::rules::pylint;
 use crate::rules::pyupgrade::rules::unnecessary_coding_comment;
 use crate::settings::{flags, Settings};
+use crate::source_code::Stylist;

 pub fn check_physical_lines(
    path: &Path,
-    locator: &Locator,
    stylist: &Stylist,
+    contents: &str,
    commented_lines: &[usize],
    doc_lines: &[usize],
    settings: &Settings,
@@ -57,7 +54,7 @@ pub fn check_physical_lines(

    let mut commented_lines_iter = commented_lines.iter().peekable();
    let mut doc_lines_iter = doc_lines.iter().peekable();
-    for (index, line) in locator.contents().universal_newlines().enumerate() {
+    for (index, line) in contents.lines().enumerate() {
        while commented_lines_iter
            .next_if(|lineno| &(index + 1) == *lineno)
            .is_some()
@@ -163,8 +160,8 @@ pub fn check_physical_lines(

    if enforce_no_newline_at_end_of_file {
        if let Some(diagnostic) = no_newline_at_end_of_file(
-            locator,
            stylist,
+            contents,
            autofix.into() && settings.rules.should_fix(&Rule::NoNewLineAtEndOfFile),
        ) {
            diagnostics.push(diagnostic);
@@ -182,14 +179,13 @@ pub fn check_physical_lines(

 #[cfg(test)]
 mod tests {
+
    use std::path::Path;

-    use ruff_python_ast::source_code::{Locator, Stylist};
-
+    use super::check_physical_lines;
    use crate::registry::Rule;
    use crate::settings::{flags, Settings};
-
-    use super::check_physical_lines;
+    use crate::source_code::{Locator, Stylist};

    #[test]
    fn e501_non_ascii_char() {
@@ -200,8 +196,8 @@ mod tests {
        let check_with_max_line_length = |line_length: usize| {
            check_physical_lines(
                Path::new("foo.py"),
-                &locator,
                &stylist,
+                line,
                &[],
                &[],
                &Settings {
--- a/crates/ruff/src/checkers/tokens.rs
+++ b/crates/ruff/src/checkers/tokens.rs
@@ -4,22 +4,21 @@ use rustpython_parser::lexer::LexResult;
 use rustpython_parser::Tok;

 use crate::lex::docstring_detection::StateMachine;
-use crate::registry::{AsRule, Rule};
+use crate::registry::{Diagnostic, Rule};
 use crate::rules::ruff::rules::Context;
 use crate::rules::{
    eradicate, flake8_commas, flake8_implicit_str_concat, flake8_pyi, flake8_quotes, pycodestyle,
    pyupgrade, ruff,
 };
 use crate::settings::{flags, Settings};
-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::source_code::Locator;
+use crate::source_code::Locator;

 pub fn check_tokens(
    locator: &Locator,
    tokens: &[LexResult],
    settings: &Settings,
    autofix: flags::Autofix,
-    is_stub: bool,
+    is_interface_definition: bool,
 ) -> Vec<Diagnostic> {
    let mut diagnostics: Vec<Diagnostic> = vec![];

@@ -165,7 +164,7 @@ pub fn check_tokens(
    }

    // PYI033
-    if enforce_type_comment_in_stub && is_stub {
+    if enforce_type_comment_in_stub && is_interface_definition {
        diagnostics.extend(flake8_pyi::rules::type_comment_in_stub(tokens));
    }

--- a/crates/ruff/src/codes.rs
+++ b/crates/ruff/src/codes.rs
@@ -1,23 +1,5 @@
 use crate::registry::{Linter, Rule};

-#[derive(PartialEq, Eq, PartialOrd, Ord)]
-pub struct NoqaCode(&'static str, &'static str);
-
-impl std::fmt::Display for NoqaCode {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
-        write!(f, "{}{}", self.0, self.1)
-    }
-}
-
-impl PartialEq<&str> for NoqaCode {
-    fn eq(&self, other: &&str) -> bool {
-        match other.strip_prefix(self.0) {
-            Some(suffix) => suffix == self.1,
-            None => false,
-        }
-    }
-}
-
 #[ruff_macros::map_codes]
 pub fn code_to_rule(linter: Linter, code: &str) -> Option<Rule> {
    #[allow(clippy::enum_glob_use)]
@@ -161,37 +143,34 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<Rule> {
        (Pyflakes, "901") => Rule::RaiseNotImplemented,

        // pylint
-        (Pylint, "C0414") => Rule::UselessImportAlias,
-        (Pylint, "C1901") => Rule::CompareToEmptyString,
-        (Pylint, "C3002") => Rule::UnnecessaryDirectLambdaCall,
        (Pylint, "E0100") => Rule::YieldInInit,
        (Pylint, "E0101") => Rule::ReturnInInit,
-        (Pylint, "E0117") => Rule::NonlocalWithoutBinding,
-        (Pylint, "E0118") => Rule::UsedPriorGlobalDeclaration,
        (Pylint, "E0604") => Rule::InvalidAllObject,
        (Pylint, "E0605") => Rule::InvalidAllFormat,
-        (Pylint, "W1508") => Rule::InvalidEnvvarDefault,
-        (Pylint, "E1142") => Rule::AwaitOutsideAsync,
        (Pylint, "E1205") => Rule::LoggingTooManyArgs,
        (Pylint, "E1206") => Rule::LoggingTooFewArgs,
        (Pylint, "E1307") => Rule::BadStringFormatType,
-        (Pylint, "E1310") => Rule::BadStrStripCall,
-        (Pylint, "E1507") => Rule::InvalidEnvvarValue,
        (Pylint, "E2502") => Rule::BidirectionalUnicode,
-        (Pylint, "R0133") => Rule::ComparisonOfConstant,
+        (Pylint, "E1310") => Rule::BadStrStripCall,
+        (Pylint, "C0414") => Rule::UselessImportAlias,
+        (Pylint, "C3002") => Rule::UnnecessaryDirectLambdaCall,
+        (Pylint, "E0117") => Rule::NonlocalWithoutBinding,
+        (Pylint, "E0118") => Rule::UsedPriorGlobalDeclaration,
+        (Pylint, "E1142") => Rule::AwaitOutsideAsync,
        (Pylint, "R0206") => Rule::PropertyWithParameters,
        (Pylint, "R0402") => Rule::ConsiderUsingFromImport,
-        (Pylint, "R0911") => Rule::TooManyReturnStatements,
-        (Pylint, "R0912") => Rule::TooManyBranches,
-        (Pylint, "R0913") => Rule::TooManyArguments,
-        (Pylint, "R0915") => Rule::TooManyStatements,
+        (Pylint, "R0133") => Rule::ComparisonOfConstant,
        (Pylint, "R1701") => Rule::ConsiderMergingIsinstance,
        (Pylint, "R1722") => Rule::ConsiderUsingSysExit,
-        (Pylint, "R2004") => Rule::MagicValueComparison,
        (Pylint, "R5501") => Rule::CollapsibleElseIf,
+        (Pylint, "R2004") => Rule::MagicValueComparison,
        (Pylint, "W0120") => Rule::UselessElseOnLoop,
        (Pylint, "W0602") => Rule::GlobalVariableNotAssigned,
        (Pylint, "W0603") => Rule::GlobalStatement,
+        (Pylint, "R0911") => Rule::TooManyReturnStatements,
+        (Pylint, "R0913") => Rule::TooManyArguments,
+        (Pylint, "R0912") => Rule::TooManyBranches,
+        (Pylint, "R0915") => Rule::TooManyStatements,
        (Pylint, "W2901") => Rule::RedefinedLoopName,

        // flake8-builtins
@@ -227,7 +206,6 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<Rule> {
        (Flake8Bugbear, "026") => Rule::StarArgUnpackingAfterKeywordArg,
        (Flake8Bugbear, "027") => Rule::EmptyMethodWithoutAbstractDecorator,
        (Flake8Bugbear, "029") => Rule::ExceptWithEmptyTuple,
-        (Flake8Bugbear, "030") => Rule::ExceptWithNonExceptionClasses,
        (Flake8Bugbear, "032") => Rule::UnintentionalTypeAnnotation,
        (Flake8Bugbear, "904") => Rule::RaiseWithoutFromInsideExcept,
        (Flake8Bugbear, "905") => Rule::ZipWithoutExplicitStrict,
@@ -375,7 +353,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<Rule> {
        (Pyupgrade, "032") => Rule::FString,
        (Pyupgrade, "033") => Rule::FunctoolsCache,
        (Pyupgrade, "034") => Rule::ExtraneousParentheses,
-        (Pyupgrade, "035") => Rule::DeprecatedImport,
+        (Pyupgrade, "035") => Rule::ImportReplacements,
        (Pyupgrade, "036") => Rule::OutdatedVersionBlock,
        (Pyupgrade, "037") => Rule::QuotedAnnotation,
        (Pyupgrade, "038") => Rule::IsinstanceWithTuple,
--- a/crates/ruff/src/directives.rs
+++ b/crates/ruff/src/directives.rs
@@ -107,21 +107,15 @@ pub fn extract_isort_directives(lxr: &[LexResult]) -> IsortDirectives {
        // omit a space after the colon. The remaining action comments are
        // required to include the space, and must appear on their own lines.
        let comment_text = comment_text.trim_end();
-        if matches!(comment_text, "# isort: split" | "# ruff: isort: split") {
+        if comment_text == "# isort: split" {
            splits.push(start.row());
-        } else if matches!(
-            comment_text,
-            "# isort: skip_file"
-                | "# isort:skip_file"
-                | "# ruff: isort: skip_file"
-                | "# ruff: isort:skip_file"
-        ) {
+        } else if comment_text == "# isort: skip_file" || comment_text == "# isort:skip_file" {
            return IsortDirectives {
                skip_file: true,
                ..IsortDirectives::default()
            };
        } else if off.is_some() {
-            if comment_text == "# isort: on" || comment_text == "# ruff: isort: on" {
+            if comment_text == "# isort: on" {
                if let Some(start) = off {
                    for row in start.row() + 1..=end.row() {
                        exclusions.insert(row);
@@ -132,7 +126,7 @@ pub fn extract_isort_directives(lxr: &[LexResult]) -> IsortDirectives {
        } else {
            if comment_text.contains("isort: skip") || comment_text.contains("isort:skip") {
                exclusions.insert(start.row());
-            } else if comment_text == "# isort: off" || comment_text == "# ruff: isort: off" {
+            } else if comment_text == "# isort: off" {
                off = Some(start);
            }
        }
--- a/crates/ruff/src/doc_lines.rs
+++ b/crates/ruff/src/doc_lines.rs
@@ -7,8 +7,8 @@ use rustpython_parser::ast::{Constant, ExprKind, Stmt, StmtKind, Suite};
 use rustpython_parser::lexer::LexResult;
 use rustpython_parser::Tok;

-use ruff_python_ast::visitor;
-use ruff_python_ast::visitor::Visitor;
+use crate::ast::visitor;
+use crate::ast::visitor::Visitor;

 /// Extract doc lines (standalone comments) from a token sequence.
 pub fn doc_lines_from_tokens(lxr: &[LexResult]) -> DocLines {
--- a/crates/ruff/src/docstrings/definition.rs
+++ b/crates/ruff/src/docstrings/definition.rs
@@ -1,6 +1,3 @@
-use ruff_python_ast::visibility::{
-    class_visibility, function_visibility, method_visibility, Modifier, Visibility, VisibleScope,
-};
 use rustpython_parser::ast::{Expr, Stmt};

 #[derive(Debug, Clone)]
@@ -33,36 +30,3 @@ pub enum Documentable {
    Class,
    Function,
 }
-
-pub fn transition_scope(scope: &VisibleScope, stmt: &Stmt, kind: &Documentable) -> VisibleScope {
-    match kind {
-        Documentable::Function => VisibleScope {
-            modifier: Modifier::Function,
-            visibility: match scope {
-                VisibleScope {
-                    modifier: Modifier::Module,
-                    visibility: Visibility::Public,
-                } => function_visibility(stmt),
-                VisibleScope {
-                    modifier: Modifier::Class,
-                    visibility: Visibility::Public,
-                } => method_visibility(stmt),
-                _ => Visibility::Private,
-            },
-        },
-        Documentable::Class => VisibleScope {
-            modifier: Modifier::Class,
-            visibility: match scope {
-                VisibleScope {
-                    modifier: Modifier::Module,
-                    visibility: Visibility::Public,
-                } => class_visibility(stmt),
-                VisibleScope {
-                    modifier: Modifier::Class,
-                    visibility: Visibility::Public,
-                } => class_visibility(stmt),
-                _ => Visibility::Private,
-            },
-        },
-    }
-}
--- a/crates/ruff/src/docstrings/extraction.rs
+++ b/crates/ruff/src/docstrings/extraction.rs
@@ -3,7 +3,7 @@
 use rustpython_parser::ast::{Constant, Expr, ExprKind, Stmt, StmtKind};

 use crate::docstrings::definition::{Definition, DefinitionKind, Documentable};
-use ruff_python_ast::visibility::{Modifier, VisibleScope};
+use crate::visibility::{Modifier, VisibleScope};

 /// Extract a docstring from a function or class body.
 pub fn docstring_from(suite: &[Stmt]) -> Option<&Expr> {
--- a/crates/ruff/src/docstrings/sections.rs
+++ b/crates/ruff/src/docstrings/sections.rs
@@ -1,7 +1,7 @@
 use strum_macros::EnumIter;

+use crate::ast::whitespace;
 use crate::docstrings::styles::SectionStyle;
-use ruff_python_ast::whitespace;

 #[derive(EnumIter, PartialEq, Eq, Debug, Clone, Copy)]
 pub enum SectionKind {
--- a/crates/ruff/src/fix.rs
+++ b/crates/ruff/src/fix.rs
@@ -1,3 +1,6 @@
+use rustpython_parser::ast::Location;
+use serde::{Deserialize, Serialize};
+
 #[derive(Debug, Copy, Clone, Hash)]
 pub enum FixMode {
    Generate,
@@ -15,3 +18,40 @@ impl From<bool> for FixMode {
        }
    }
 }
+
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
+pub struct Fix {
+    pub content: String,
+    pub location: Location,
+    pub end_location: Location,
+}
+
+impl Fix {
+    pub const fn deletion(start: Location, end: Location) -> Self {
+        Self {
+            content: String::new(),
+            location: start,
+            end_location: end,
+        }
+    }
+
+    pub fn replacement(content: String, start: Location, end: Location) -> Self {
+        debug_assert!(!content.is_empty(), "Prefer `Fix::deletion`");
+
+        Self {
+            content,
+            location: start,
+            end_location: end,
+        }
+    }
+
+    pub fn insertion(content: String, at: Location) -> Self {
+        debug_assert!(!content.is_empty(), "Insert content is empty");
+
+        Self {
+            content,
+            location: at,
+            end_location: at,
+        }
+    }
+}
--- a/crates/ruff/src/flake8_to_ruff/converter.rs
+++ b/crates/ruff/src/flake8_to_ruff/converter.rs
@@ -20,7 +20,6 @@ use crate::rules::{
 };
 use crate::settings::options::Options;
 use crate::settings::pyproject::Pyproject;
-use crate::settings::types::PythonVersion;
 use crate::warn_user;

 const DEFAULT_SELECTORS: &[RuleSelector] = &[
@@ -425,15 +424,6 @@ pub fn convert(
        }
    }

-    if let Some(project) = &external_config.project {
-        if let Some(requires_python) = &project.requires_python {
-            if options.target_version.is_none() {
-                options.target_version =
-                    PythonVersion::get_minimum_supported_version(requires_python);
-            }
-        }
-    }
-
    // Create the pyproject.toml.
    Ok(Pyproject::new(options))
 }
@@ -449,17 +439,13 @@ fn resolve_select(plugins: &[Plugin]) -> HashSet<RuleSelector> {
 #[cfg(test)]
 mod tests {
    use std::collections::HashMap;
-    use std::str::FromStr;

    use anyhow::Result;
    use itertools::Itertools;
-    use pep440_rs::VersionSpecifiers;
-    use pretty_assertions::assert_eq;

    use super::super::plugin::Plugin;
    use super::convert;
    use crate::flake8_to_ruff::converter::DEFAULT_SELECTORS;
-    use crate::flake8_to_ruff::pep621::Project;
    use crate::flake8_to_ruff::ExternalConfig;
    use crate::registry::Linter;
    use crate::rule_selector::RuleSelector;
@@ -467,7 +453,6 @@ mod tests {
    use crate::rules::{flake8_quotes, pydocstyle};
    use crate::settings::options::Options;
    use crate::settings::pyproject::Pyproject;
-    use crate::settings::types::PythonVersion;

    fn default_options(plugins: impl IntoIterator<Item = RuleSelector>) -> Options {
        Options {
@@ -624,25 +609,4 @@ mod tests {

        Ok(())
    }
-
-    #[test]
-    fn it_converts_project_requires_python() -> Result<()> {
-        let actual = convert(
-            &HashMap::from([("flake8".to_string(), HashMap::default())]),
-            &ExternalConfig {
-                project: Some(&Project {
-                    requires_python: Some(VersionSpecifiers::from_str(">=3.8.16, <3.11")?),
-                }),
-                ..ExternalConfig::default()
-            },
-            Some(vec![]),
-        )?;
-        let expected = Pyproject::new(Options {
-            target_version: Some(PythonVersion::Py38),
-            ..default_options([])
-        });
-        assert_eq!(actual, expected);
-
-        Ok(())
-    }
 }
--- a/crates/ruff/src/flake8_to_ruff/external_config.rs
+++ b/crates/ruff/src/flake8_to_ruff/external_config.rs
@@ -1,10 +1,8 @@
 use super::black::Black;
 use super::isort::Isort;
-use super::pep621::Project;

 #[derive(Default)]
 pub struct ExternalConfig<'a> {
    pub black: Option<&'a Black>,
    pub isort: Option<&'a Isort>,
-    pub project: Option<&'a Project>,
 }
--- a/crates/ruff/src/flake8_to_ruff/mod.rs
+++ b/crates/ruff/src/flake8_to_ruff/mod.rs
@@ -3,7 +3,6 @@ mod converter;
 mod external_config;
 mod isort;
 mod parser;
-pub mod pep621;
 mod plugin;
 mod pyproject;

--- a/crates/ruff/src/flake8_to_ruff/pep621.rs
+++ b/crates/ruff/src/flake8_to_ruff/pep621.rs
@@ -1,10 +0,0 @@
-//! Extract PEP 621 configuration settings from a pyproject.toml.
-
-use pep440_rs::VersionSpecifiers;
-use serde::{Deserialize, Serialize};
-
-#[derive(Debug, PartialEq, Eq, Serialize, Deserialize, Default)]
-pub struct Project {
-    #[serde(alias = "requires-python", alias = "requires_python")]
-    pub requires_python: Option<VersionSpecifiers>,
-}
--- a/crates/ruff/src/flake8_to_ruff/pyproject.rs
+++ b/crates/ruff/src/flake8_to_ruff/pyproject.rs
@@ -5,7 +5,6 @@ use serde::{Deserialize, Serialize};

 use super::black::Black;
 use super::isort::Isort;
-use super::pep621::Project;

 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct Tools {
@@ -16,7 +15,6 @@ pub struct Tools {
 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct Pyproject {
    pub tool: Option<Tools>,
-    pub project: Option<Project>,
 }

 pub fn parse<P: AsRef<Path>>(path: P) -> Result<Pyproject> {
--- a/crates/ruff/src/fs.rs
+++ b/crates/ruff/src/fs.rs
@@ -74,20 +74,10 @@ pub fn normalize_path_to<P: AsRef<Path>, R: AsRef<Path>>(path: P, project_root:
 }

 /// Convert an absolute path to be relative to the current working directory.
-pub fn relativize_path<P: AsRef<Path>>(path: P) -> String {
+pub fn relativize_path(path: impl AsRef<Path>) -> String {
    let path = path.as_ref();
    if let Ok(path) = path.strip_prefix(&*path_dedot::CWD) {
        return format!("{}", path.display());
    }
    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/src/lib.rs
+++ b/crates/ruff/src/lib.rs
@@ -5,16 +5,18 @@
 //!
 //! [Ruff]: https://github.com/charliermarsh/ruff

-pub use ruff_python_ast::source_code::round_trip;
-pub use ruff_python_ast::types::Range;
+pub use ast::types::Range;
+use cfg_if::cfg_if;
 pub use rule_selector::RuleSelector;
 pub use rules::pycodestyle::rules::IOError;
+pub use violation::{AutofixKind, Availability as AutofixAvailability};

+mod ast;
 mod autofix;
 mod checkers;
 mod codes;
 mod cst;
-pub mod directives;
+mod directives;
 mod doc_lines;
 mod docstrings;
 pub mod fix;
@@ -25,13 +27,24 @@ pub mod linter;
 pub mod logging;
 pub mod message;
 mod noqa;
-pub mod packaging;
 pub mod registry;
 pub mod resolver;
 mod rule_redirects;
 mod rule_selector;
-pub mod rules;
+mod rules;
 pub mod settings;
+pub mod source_code;
+mod violation;
+mod visibility;
+
+cfg_if! {
+    if #[cfg(target_family = "wasm")] {
+        mod lib_wasm;
+        pub use lib_wasm::check;
+    } else {
+        pub mod packaging;
+    }
+}

 #[cfg(test)]
 mod test;
--- a/crates/ruff/src/lib_wasm.rs
+++ b/crates/ruff/src/lib_wasm.rs
@@ -2,22 +2,22 @@ use std::path::Path;

 use rustpython_parser::ast::Location;
 use rustpython_parser::lexer::LexResult;
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 use wasm_bindgen::prelude::*;

-use ruff::directives;
-use ruff::linter::{check_path, LinterResult};
-use ruff::registry::AsRule;
-use ruff::rules::{
+use crate::directives;
+use crate::linter::{check_path, LinterResult};
+use crate::registry::Rule;
+use crate::rules::{
    flake8_annotations, flake8_bandit, flake8_bugbear, flake8_builtins, flake8_comprehensions,
    flake8_errmsg, flake8_implicit_str_concat, flake8_import_conventions, flake8_pytest_style,
    flake8_quotes, flake8_self, flake8_tidy_imports, flake8_type_checking, flake8_unused_arguments,
    isort, mccabe, pep8_naming, pycodestyle, pydocstyle, pylint, pyupgrade,
 };
-use ruff::settings::configuration::Configuration;
-use ruff::settings::options::Options;
-use ruff::settings::{defaults, flags, Settings};
-use ruff_python_ast::source_code::{Indexer, Locator, Stylist};
+use crate::settings::configuration::Configuration;
+use crate::settings::options::Options;
+use crate::settings::{defaults, flags, Settings};
+use crate::source_code::{Indexer, Locator, Stylist};

 const VERSION: &str = env!("CARGO_PKG_VERSION");

@@ -49,17 +49,34 @@ export interface Diagnostic {
 };
 "#;

-#[derive(Serialize, Deserialize, Eq, PartialEq, Debug)]
-pub struct ExpandedMessage {
-    pub code: String,
-    pub message: String,
-    pub location: Location,
-    pub end_location: Location,
-    pub fix: Option<ExpandedFix>,
+#[derive(Serialize)]
+struct ExpandedMessage {
+    code: SerializeRuleAsCode,
+    message: String,
+    location: Location,
+    end_location: Location,
+    fix: Option<ExpandedFix>,
 }

-#[derive(Serialize, Deserialize, Eq, PartialEq, Debug)]
-pub struct ExpandedFix {
+struct SerializeRuleAsCode(Rule);
+
+impl Serialize for SerializeRuleAsCode {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        serializer.serialize_str(&self.0.noqa_code().to_string())
+    }
+}
+
+impl From<Rule> for SerializeRuleAsCode {
+    fn from(rule: Rule) -> Self {
+        Self(rule)
+    }
+}
+
+#[derive(Serialize)]
+struct ExpandedFix {
    content: String,
    message: Option<String>,
    location: Location,
@@ -69,16 +86,7 @@ pub struct ExpandedFix {
 #[wasm_bindgen(start)]
 pub fn run() {
    use log::Level;
-
-    // When the `console_error_panic_hook` feature is enabled, we can call the
-    // `set_panic_hook` function at least once during initialization, and then
-    // we will get better error messages if our code ever panics.
-    //
-    // For more details see
-    // https://github.com/rustwasm/console_error_panic_hook#readme
-    #[cfg(feature = "console_error_panic_hook")]
    console_error_panic_hook::set_once();
-
    console_log::init_with_level(Level::Debug).expect("Initializing logger went wrong.");
 }

@@ -199,14 +207,14 @@ pub fn check(contents: &str, options: JsValue) -> Result<JsValue, JsValue> {

    let messages: Vec<ExpandedMessage> = diagnostics
        .into_iter()
-        .map(|message| ExpandedMessage {
-            code: message.kind.rule().noqa_code().to_string(),
-            message: message.kind.body,
-            location: message.location,
-            end_location: message.end_location,
-            fix: message.fix.map(|fix| ExpandedFix {
+        .map(|diagnostic| ExpandedMessage {
+            code: diagnostic.kind.rule().clone().into(),
+            message: diagnostic.kind.body(),
+            location: diagnostic.location,
+            end_location: diagnostic.end_location,
+            fix: diagnostic.fix.map(|fix| ExpandedFix {
                content: fix.content,
-                message: message.kind.suggestion,
+                message: diagnostic.kind.commit(),
                location: fix.location,
                end_location: fix.end_location,
            }),
@@ -215,3 +223,55 @@ pub fn check(contents: &str, options: JsValue) -> Result<JsValue, JsValue> {

    Ok(serde_wasm_bindgen::to_value(&messages)?)
 }
+
+#[cfg(test)]
+mod test {
+    use js_sys;
+    use wasm_bindgen_test::*;
+
+    use super::*;
+
+    macro_rules! check {
+        ($source:expr, $config:expr, $expected:expr) => {{
+            let foo = js_sys::JSON::parse($config).unwrap();
+            match check($source, foo) {
+                Ok(output) => {
+                    let result: Vec<Message> = serde_wasm_bindgen::from_value(output).unwrap();
+                    assert_eq!(result, $expected);
+                }
+                Err(e) => assert!(false, "{:#?}", e),
+            }
+        }};
+    }
+
+    #[wasm_bindgen_test]
+    fn empty_config() {
+        check!(
+            "if (1, 2): pass",
+            r#"{}"#,
+            [ExpandedMessage {
+                code: Rule::IfTuple.into(),
+                message: "If test is a tuple, which is always `True`".to_string(),
+                location: Location::new(1, 0),
+                end_location: Location::new(1, 15),
+                fix: None,
+            }]
+        );
+    }
+
+    #[wasm_bindgen_test]
+    fn partial_config() {
+        check!("if (1, 2): pass", r#"{"ignore": ["F"]}"#, []);
+    }
+
+    #[wasm_bindgen_test]
+    fn partial_nested_config() {
+        let config = r#"{
+          "select": ["Q"],
+          "flake8-quotes": {
+            "inline-quotes": "single"
+          }
+        }"#;
+        check!(r#"print('hello world')"#, config, []);
+    }
+}
--- a/crates/ruff/src/linter.rs
+++ b/crates/ruff/src/linter.rs
@@ -8,10 +8,6 @@ use rustc_hash::FxHashMap;
 use rustpython_parser::lexer::LexResult;
 use rustpython_parser::ParseError;

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::source_code::{Indexer, Locator, Stylist};
-use ruff_python_stdlib::path::is_python_stub_file;
-
 use crate::autofix::fix_file;
 use crate::checkers::ast::check_ast;
 use crate::checkers::filesystem::check_file_path;
@@ -24,9 +20,11 @@ use crate::directives::Directives;
 use crate::doc_lines::{doc_lines_from_ast, doc_lines_from_tokens};
 use crate::message::{Message, Source};
 use crate::noqa::{add_noqa, rule_is_ignored};
-use crate::registry::{AsRule, Rule};
+use crate::registry::{Diagnostic, Rule};
+use crate::resolver::is_interface_definition_path;
 use crate::rules::pycodestyle;
 use crate::settings::{flags, Settings};
+use crate::source_code::{Indexer, Locator, Stylist};
 use crate::{directives, fs};

 const CARGO_PKG_NAME: &str = env!("CARGO_PKG_NAME");
@@ -86,8 +84,14 @@ pub fn check_path(
        .iter_enabled()
        .any(|rule_code| rule_code.lint_source().is_tokens())
    {
-        let is_stub = is_python_stub_file(path);
-        diagnostics.extend(check_tokens(locator, &tokens, settings, autofix, is_stub));
+        let is_interface_definition = is_interface_definition_path(path);
+        diagnostics.extend(check_tokens(
+            locator,
+            &tokens,
+            settings,
+            autofix,
+            is_interface_definition,
+        ));
    }

    // Run the filesystem-based rules.
@@ -191,8 +195,8 @@ pub fn check_path(
    {
        diagnostics.extend(check_physical_lines(
            path,
-            locator,
            stylist,
+            contents,
            indexer.commented_lines(),
            &doc_lines,
            settings,
@@ -204,7 +208,7 @@ pub fn check_path(
    if !diagnostics.is_empty() && !settings.per_file_ignores.is_empty() {
        let ignores = fs::ignores_from_path(path, &settings.per_file_ignores);
        if !ignores.is_empty() {
-            diagnostics.retain(|diagnostic| !ignores.contains(diagnostic.kind.rule()));
+            diagnostics.retain(|diagnostic| !ignores.contains(&diagnostic.kind.rule()));
        }
    };

@@ -215,7 +219,7 @@ pub fn check_path(
            .iter_enabled()
            .any(|rule_code| rule_code.lint_source().is_noqa())
    {
-        let ignored = check_noqa(
+        check_noqa(
            &mut diagnostics,
            contents,
            indexer.commented_lines(),
@@ -223,11 +227,6 @@ pub fn check_path(
            settings,
            error.as_ref().map_or(autofix, |_| flags::Autofix::Disabled),
        );
-        if noqa.into() {
-            for index in ignored.iter().rev() {
-                diagnostics.swap_remove(*index);
-            }
-        }
    }

    LinterResult::new(diagnostics, error)
--- a/crates/ruff/src/logging.rs
+++ b/crates/ruff/src/logging.rs
@@ -1,31 +1,8 @@
-use std::sync::Mutex;
-
 use anyhow::Result;
 use colored::Colorize;
 use fern;
 use log::Level;
-use once_cell::sync::Lazy;

-pub(crate) static WARNINGS: Lazy<Mutex<Vec<&'static str>>> = Lazy::new(Mutex::default);
-
-/// Warn a user once, with uniqueness determined by the given ID.
-#[macro_export]
-macro_rules! warn_user_once_by_id {
-    ($id:expr, $($arg:tt)*) => {
-        use colored::Colorize;
-        use log::warn;
-
-        if let Ok(mut states) = $crate::logging::WARNINGS.lock() {
-            if !states.contains(&$id) {
-                let message = format!("{}", format_args!($($arg)*));
-                warn!("{}", message.bold());
-                states.push($id);
-            }
-        }
-    };
-}
-
-/// Warn a user once, with uniqueness determined by the calling location itself.
 #[macro_export]
 macro_rules! warn_user_once {
    ($($arg:tt)*) => {
--- a/crates/ruff/src/message.rs
+++ b/crates/ruff/src/message.rs
@@ -3,9 +3,10 @@ use std::cmp::Ordering;
 pub use rustpython_parser::ast::Location;
 use serde::{Deserialize, Serialize};

-use ruff_diagnostics::{Diagnostic, DiagnosticKind, Fix};
-use ruff_python_ast::source_code::Locator;
-use ruff_python_ast::types::Range;
+use crate::ast::types::Range;
+use crate::fix::Fix;
+use crate::registry::{Diagnostic, DiagnosticKind};
+use crate::source_code::Locator;

 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct Message {
@@ -73,9 +74,9 @@ impl Source {
        } else {
            Location::new(diagnostic.end_location.row() + 1, 0)
        };
-        let source = locator.slice(Range::new(location, end_location));
+        let source = locator.slice(&Range::new(location, end_location));
        let num_chars_in_range = locator
-            .slice(Range::new(diagnostic.location, diagnostic.end_location))
+            .slice(&Range::new(diagnostic.location, diagnostic.end_location))
            .chars()
            .count();
        Source {
--- a/crates/ruff/src/noqa.rs
+++ b/crates/ruff/src/noqa.rs
@@ -11,18 +11,15 @@ use regex::Regex;
 use rustc_hash::{FxHashMap, FxHashSet};
 use rustpython_parser::ast::Location;

-use ruff_diagnostics::Diagnostic;
-use ruff_python_ast::newlines::StrExt;
-use ruff_python_ast::source_code::{LineEnding, Locator};
-use ruff_python_ast::types::Range;
-
+use crate::ast::types::Range;
 use crate::codes::NoqaCode;
-use crate::registry::{AsRule, Rule};
+use crate::registry::{Diagnostic, Rule};
 use crate::rule_redirects::get_redirect_target;
+use crate::source_code::{LineEnding, Locator};

 static NOQA_LINE_REGEX: Lazy<Regex> = Lazy::new(|| {
    Regex::new(
-        r"(?P<leading_spaces>\s*)(?P<noqa>(?i:# noqa)(?::\s?(?P<codes>(?:[A-Z]+[0-9]+)(?:[,\s]+[A-Z]+[0-9]+)*))?)(?P<trailing_spaces>\s*)",
+        r"(?P<spaces>\s*)(?P<noqa>(?i:# noqa)(?::\s?(?P<codes>([A-Z]+[0-9]+(?:[,\s]+)?)+))?)",
    )
    .unwrap()
 });
@@ -74,42 +71,35 @@ pub fn extract_file_exemption(line: &str) -> Exemption {
 #[derive(Debug)]
 pub enum Directive<'a> {
    None,
-    All(usize, usize, usize, usize),
-    Codes(usize, usize, usize, Vec<&'a str>, usize),
+    All(usize, usize, usize),
+    Codes(usize, usize, usize, Vec<&'a str>),
 }

 /// Extract the noqa `Directive` from a line of Python source code.
 pub fn extract_noqa_directive(line: &str) -> Directive {
    match NOQA_LINE_REGEX.captures(line) {
-        Some(caps) => match caps.name("leading_spaces") {
-            Some(leading_spaces) => match caps.name("trailing_spaces") {
-                Some(trailing_spaces) => match caps.name("noqa") {
-                    Some(noqa) => match caps.name("codes") {
-                        Some(codes) => {
-                            let codes: Vec<&str> = SPLIT_COMMA_REGEX
-                                .split(codes.as_str().trim())
-                                .map(str::trim)
-                                .filter(|code| !code.is_empty())
-                                .collect();
-                            if codes.is_empty() {
-                                warn!("Expected rule codes on `noqa` directive: \"{line}\"");
-                            }
-                            Directive::Codes(
-                                leading_spaces.as_str().chars().count(),
-                                noqa.start(),
-                                noqa.end(),
-                                codes,
-                                trailing_spaces.as_str().chars().count(),
-                            )
+        Some(caps) => match caps.name("spaces") {
+            Some(spaces) => match caps.name("noqa") {
+                Some(noqa) => match caps.name("codes") {
+                    Some(codes) => {
+                        let codes: Vec<&str> = SPLIT_COMMA_REGEX
+                            .split(codes.as_str().trim())
+                            .map(str::trim)
+                            .filter(|code| !code.is_empty())
+                            .collect();
+                        if codes.is_empty() {
+                            warn!("Expected rule codes on `noqa` directive: \"{line}\"");
                        }
-                        None => Directive::All(
-                            leading_spaces.as_str().chars().count(),
+                        Directive::Codes(
+                            spaces.as_str().chars().count(),
                            noqa.start(),
                            noqa.end(),
-                            trailing_spaces.as_str().chars().count(),
-                        ),
-                    },
-                    None => Directive::None,
+                            codes,
+                        )
+                    }
+                    None => {
+                        Directive::All(spaces.as_str().chars().count(), noqa.start(), noqa.end())
+                    }
                },
                None => Directive::None,
            },
@@ -136,14 +126,14 @@ pub fn rule_is_ignored(
    locator: &Locator,
 ) -> bool {
    let noqa_lineno = noqa_line_for.get(&lineno).unwrap_or(&lineno);
-    let line = locator.slice(Range::new(
+    let line = locator.slice(&Range::new(
        Location::new(*noqa_lineno, 0),
        Location::new(noqa_lineno + 1, 0),
    ));
    match extract_noqa_directive(line) {
        Directive::None => false,
        Directive::All(..) => true,
-        Directive::Codes(.., codes, _) => includes(code, &codes),
+        Directive::Codes(.., codes) => includes(code, &codes),
    }
 }

@@ -182,7 +172,7 @@ fn add_noqa_inner(
    // Codes that are globally exempted (within the current file).
    let mut file_exemptions: Vec<NoqaCode> = vec![];

-    let lines: Vec<&str> = contents.universal_newlines().collect();
+    let lines: Vec<&str> = contents.lines().collect();
    for lineno in commented_lines {
        match extract_file_exemption(lines[lineno - 1]) {
            Exemption::All => {
@@ -224,7 +214,7 @@ fn add_noqa_inner(
                    Directive::All(..) => {
                        continue;
                    }
-                    Directive::Codes(.., codes, _) => {
+                    Directive::Codes(.., codes) => {
                        if includes(diagnostic.kind.rule(), &codes) {
                            continue;
                        }
@@ -244,7 +234,7 @@ fn add_noqa_inner(
                Directive::All(..) => {
                    continue;
                }
-                Directive::Codes(.., codes, _) => {
+                Directive::Codes(.., codes) => {
                    if includes(diagnostic.kind.rule(), &codes) {
                        continue;
                    }
@@ -264,7 +254,7 @@ fn add_noqa_inner(

    let mut count: usize = 0;
    let mut output = String::new();
-    for (lineno, line) in lines.into_iter().enumerate() {
+    for (lineno, line) in contents.lines().enumerate() {
        match matches_by_line.get(&lineno) {
            None => {
                output.push_str(line);
@@ -289,7 +279,7 @@ fn add_noqa_inner(
                        output.push_str(line);
                        output.push_str(line_ending);
                    }
-                    Directive::Codes(_, start_byte, _, existing, _) => {
+                    Directive::Codes(_, start_byte, _, existing) => {
                        // Reconstruct the line based on the preserved rule codes.
                        // This enables us to tally the number of edits.
                        let mut formatted = String::with_capacity(line.len());
@@ -342,13 +332,12 @@ mod tests {
    use nohash_hasher::IntMap;
    use rustpython_parser::ast::Location;

-    use ruff_diagnostics::Diagnostic;
-    use ruff_python_ast::source_code::LineEnding;
-    use ruff_python_ast::types::Range;
-
+    use crate::ast::types::Range;
    use crate::noqa::{add_noqa_inner, NOQA_LINE_REGEX};
+    use crate::registry::Diagnostic;
    use crate::rules::pycodestyle::rules::AmbiguousVariableName;
    use crate::rules::pyflakes;
+    use crate::source_code::LineEnding;

    #[test]
    fn regex() {
--- a/crates/ruff/src/registry.rs
+++ b/crates/ruff/src/registry.rs
@@ -1,12 +1,15 @@
-//! Registry of all [`Rule`] implementations.
+//! Registry of [`Rule`] to [`DiagnosticKind`] mappings.

+use ruff_macros::RuleNamespace;
+use rustpython_parser::ast::Location;
+use serde::{Deserialize, Serialize};
 use strum_macros::{AsRefStr, EnumIter};

-use ruff_diagnostics::Violation;
-use ruff_macros::RuleNamespace;
-
+use crate::ast::types::Range;
 use crate::codes::{self, RuleCodePrefix};
+use crate::fix::Fix;
 use crate::rules;
+use crate::violation::Violation;

 ruff_macros::register_rules!(
    // pycodestyle errors
@@ -146,8 +149,6 @@ ruff_macros::register_rules!(
    rules::pylint::rules::YieldInInit,
    rules::pylint::rules::InvalidAllObject,
    rules::pylint::rules::InvalidAllFormat,
-    rules::pylint::rules::InvalidEnvvarDefault,
-    rules::pylint::rules::InvalidEnvvarValue,
    rules::pylint::rules::BadStringFormatType,
    rules::pylint::rules::BidirectionalUnicode,
    rules::pylint::rules::BadStrStripCall,
@@ -160,7 +161,6 @@ ruff_macros::register_rules!(
    rules::pylint::rules::PropertyWithParameters,
    rules::pylint::rules::ReturnInInit,
    rules::pylint::rules::ConsiderUsingFromImport,
-    rules::pylint::rules::CompareToEmptyString,
    rules::pylint::rules::ComparisonOfConstant,
    rules::pylint::rules::ConsiderMergingIsinstance,
    rules::pylint::rules::ConsiderUsingSysExit,
@@ -209,7 +209,6 @@ ruff_macros::register_rules!(
    rules::flake8_bugbear::rules::RaiseWithoutFromInsideExcept,
    rules::flake8_bugbear::rules::ZipWithoutExplicitStrict,
    rules::flake8_bugbear::rules::ExceptWithEmptyTuple,
-    rules::flake8_bugbear::rules::ExceptWithNonExceptionClasses,
    rules::flake8_bugbear::rules::UnintentionalTypeAnnotation,
    // flake8-blind-except
    rules::flake8_blind_except::rules::BlindExcept,
@@ -341,7 +340,7 @@ ruff_macros::register_rules!(
    rules::pyupgrade::rules::FString,
    rules::pyupgrade::rules::FunctoolsCache,
    rules::pyupgrade::rules::ExtraneousParentheses,
-    rules::pyupgrade::rules::DeprecatedImport,
+    rules::pyupgrade::rules::ImportReplacements,
    rules::pyupgrade::rules::OutdatedVersionBlock,
    rules::pyupgrade::rules::QuotedAnnotation,
    rules::pyupgrade::rules::IsinstanceWithTuple,
@@ -610,20 +609,6 @@ ruff_macros::register_rules!(
    rules::flake8_django::rules::NonLeadingReceiverDecorator,
 );

-impl Rule {
-    pub fn from_code(code: &str) -> Result<Self, FromCodeError> {
-        let (linter, code) = Linter::parse_code(code).ok_or(FromCodeError::Unknown)?;
-        let prefix: RuleCodePrefix = RuleCodePrefix::parse(&linter, code)?;
-        Ok(prefix.into_iter().next().unwrap())
-    }
-}
-
-#[derive(thiserror::Error, Debug)]
-pub enum FromCodeError {
-    #[error("unknown rule code")]
-    Unknown,
-}
-
 #[derive(EnumIter, Debug, PartialEq, Eq, Clone, Hash, RuleNamespace)]
 pub enum Linter {
    /// [Pyflakes](https://pypi.org/project/pyflakes/)
@@ -805,7 +790,7 @@ impl Linter {
    }
 }

-#[derive(is_macro::Is, Copy, Clone)]
+#[derive(is_macro::Is)]
 pub enum LintSource {
    Ast,
    Io,
@@ -820,9 +805,9 @@ pub enum LintSource {
 impl Rule {
    /// The source for the diagnostic (either the AST, the filesystem, or the
    /// physical lines).
-    pub const fn lint_source(&self) -> LintSource {
+    pub const fn lint_source(&self) -> &'static LintSource {
        match self {
-            Rule::UnusedNOQA => LintSource::Noqa,
+            Rule::UnusedNOQA => &LintSource::Noqa,
            Rule::BlanketNOQA
            | Rule::BlanketTypeIgnore
            | Rule::DocLineTooLong
@@ -838,7 +823,7 @@ impl Rule {
            | Rule::ShebangWhitespace
            | Rule::TrailingWhitespace
            | Rule::IndentationContainsTabs
-            | Rule::BlankLineContainsWhitespace => LintSource::PhysicalLines,
+            | Rule::BlankLineContainsWhitespace => &LintSource::PhysicalLines,
            Rule::AmbiguousUnicodeCharacterComment
            | Rule::AmbiguousUnicodeCharacterDocstring
            | Rule::AmbiguousUnicodeCharacterString
@@ -857,10 +842,10 @@ impl Rule {
            | Rule::UselessSemicolon
            | Rule::MultipleStatementsOnOneLineSemicolon
            | Rule::TrailingCommaProhibited
-            | Rule::TypeCommentInStub => LintSource::Tokens,
-            Rule::IOError => LintSource::Io,
-            Rule::UnsortedImports | Rule::MissingRequiredImport => LintSource::Imports,
-            Rule::ImplicitNamespacePackage | Rule::InvalidModuleName => LintSource::Filesystem,
+            | Rule::TypeCommentInStub => &LintSource::Tokens,
+            Rule::IOError => &LintSource::Io,
+            Rule::UnsortedImports | Rule::MissingRequiredImport => &LintSource::Imports,
+            Rule::ImplicitNamespacePackage | Rule::InvalidModuleName => &LintSource::Filesystem,
            #[cfg(feature = "logical_lines")]
            Rule::IndentationWithInvalidMultiple
            | Rule::IndentationWithInvalidMultipleComment
@@ -892,12 +877,43 @@ impl Rule {
            | Rule::WhitespaceAfterOpenBracket
            | Rule::WhitespaceBeforeCloseBracket
            | Rule::WhitespaceBeforeParameters
-            | Rule::WhitespaceBeforePunctuation => LintSource::LogicalLines,
-            _ => LintSource::Ast,
+            | Rule::WhitespaceBeforePunctuation => &LintSource::LogicalLines,
+            _ => &LintSource::Ast,
        }
    }
 }

+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Diagnostic {
+    pub kind: DiagnosticKind,
+    pub location: Location,
+    pub end_location: Location,
+    pub fix: Option<Fix>,
+    pub parent: Option<Location>,
+}
+
+impl Diagnostic {
+    pub fn new<K: Into<DiagnosticKind>>(kind: K, range: Range) -> Self {
+        Self {
+            kind: kind.into(),
+            location: range.location,
+            end_location: range.end_location,
+            fix: None,
+            parent: None,
+        }
+    }
+
+    pub fn amend(&mut self, fix: Fix) -> &mut Self {
+        self.fix = Some(fix);
+        self
+    }
+
+    pub fn parent(&mut self, parent: Location) -> &mut Self {
+        self.parent = Some(parent);
+        self
+    }
+}
+
 /// Pairs of checks that shouldn't be enabled together.
 pub const INCOMPATIBLE_CODES: &[(Rule, Rule, &str); 2] = &[
    (
--- a/crates/ruff/src/resolver.rs
+++ b/crates/ruff/src/resolver.rs
@@ -10,7 +10,6 @@ use ignore::{DirEntry, WalkBuilder, WalkState};
 use itertools::Itertools;
 use log::debug;
 use path_absolutize::path_dedot;
-use ruff_python_stdlib::path::is_python_file;
 use rustc_hash::FxHashSet;

 use crate::fs;
@@ -127,8 +126,7 @@ pub fn resolve_configuration(
        }

        // Resolve the current path.
-        let options = pyproject::load_options(&path)
-            .map_err(|err| anyhow!("Failed to parse `{}`: {}", path.display(), err))?;
+        let options = pyproject::load_options(&path)?;
        let project_root = relativity.resolve(&path);
        let configuration = Configuration::from_options(options, &project_root)?;

@@ -193,9 +191,20 @@ fn match_exclusion(file_path: &str, file_basename: &str, exclusion: &globset::Gl
    exclusion.is_match(file_path) || exclusion.is_match(file_basename)
 }

+/// Return `true` if the [`Path`] appears to be that of a Python file.
+fn is_python_path(path: &Path) -> bool {
+    path.extension()
+        .map_or(false, |ext| ext == "py" || ext == "pyi")
+}
+
+/// Return `true` if the [`Path`] appears to be that of a Python interface definition file (`.pyi`).
+pub fn is_interface_definition_path(path: &Path) -> bool {
+    path.extension().map_or(false, |ext| ext == "pyi")
+}
+
 /// Return `true` if the [`DirEntry`] appears to be that of a Python file.
 pub fn is_python_entry(entry: &DirEntry) -> bool {
-    is_python_file(entry.path())
+    is_python_path(entry.path())
        && !entry
            .file_type()
            .map_or(false, |file_type| file_type.is_dir())
@@ -421,13 +430,28 @@ mod tests {

    use crate::fs;
    use crate::resolver::{
-        is_file_excluded, match_exclusion, resolve_settings_with_processor, NoOpProcessor,
-        PyprojectDiscovery, Relativity, Resolver,
+        is_file_excluded, is_python_path, match_exclusion, resolve_settings_with_processor,
+        NoOpProcessor, PyprojectDiscovery, Relativity, Resolver,
    };
    use crate::settings::pyproject::find_settings_toml;
    use crate::settings::types::FilePattern;
    use crate::test::test_resource_path;

+    #[test]
+    fn inclusions() {
+        let path = Path::new("foo/bar/baz.py").absolutize().unwrap();
+        assert!(is_python_path(&path));
+
+        let path = Path::new("foo/bar/baz.pyi").absolutize().unwrap();
+        assert!(is_python_path(&path));
+
+        let path = Path::new("foo/bar/baz.js").absolutize().unwrap();
+        assert!(!is_python_path(&path));
+
+        let path = Path::new("foo/bar/baz").absolutize().unwrap();
+        assert!(!is_python_path(&path));
+    }
+
    fn make_exclusion(file_pattern: FilePattern) -> GlobSet {
        let mut builder = globset::GlobSetBuilder::new();
        file_pattern.add_to(&mut builder).unwrap();
--- a/crates/ruff/src/rule_redirects.rs
+++ b/crates/ruff/src/rule_redirects.rs
@@ -18,7 +18,9 @@ static REDIRECTS: Lazy<HashMap<&'static str, &'static str>> = Lazy::new(|| {
        // The following are here because we don't yet have the many-to-one mapping enabled.
        ("SIM111", "SIM110"),
        // The following are deprecated.
+        ("C", "C4"),
        ("C9", "C90"),
+        ("T", "T10"),
        ("T1", "T10"),
        ("T2", "T20"),
        // TODO(charlie): Remove by 2023-02-01.
--- a/crates/ruff/src/rule_selector.rs
+++ b/crates/ruff/src/rule_selector.rs
@@ -15,17 +15,9 @@ use crate::rule_redirects::get_redirect;

 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum RuleSelector {
-    /// Select all rules.
+    /// All rules
    All,
-    /// Legacy category to select both the `mccabe` and `flake8-comprehensions` linters
-    /// via a single selector.
-    C,
-    /// Legacy category to select both the `flake8-debugger` and `flake8-print` linters
-    /// via a single selector.
-    T,
-    /// Select all rules for a given linter.
    Linter(Linter),
-    /// Select all rules for a given linter with a given prefix.
    Prefix {
        prefix: RuleCodePrefix,
        redirected_from: Option<&'static str>,
@@ -44,10 +36,6 @@ impl FromStr for RuleSelector {
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        if s == "ALL" {
            Ok(Self::All)
-        } else if s == "C" {
-            Ok(Self::C)
-        } else if s == "T" {
-            Ok(Self::T)
        } else {
            let (s, redirected_from) = match get_redirect(s) {
                Some((from, target)) => (target, Some(from)),
@@ -63,7 +51,7 @@ impl FromStr for RuleSelector {

            Ok(Self::Prefix {
                prefix: RuleCodePrefix::parse(&linter, code)
-                    .map_err(|_| ParseError::Unknown(s.to_string()))?,
+                    .map_err(|_| ParseError::Unknown(code.to_string()))?,
                redirected_from,
            })
        }
@@ -72,7 +60,7 @@ impl FromStr for RuleSelector {

 #[derive(Debug, thiserror::Error)]
 pub enum ParseError {
-    #[error("Unknown rule selector: `{0}`")]
+    #[error("Unknown rule selector `{0}`")]
    // TODO(martin): tell the user how to discover rule codes via the CLI once such a command is
    // implemented (but that should of course be done only in ruff_cli and not here)
    Unknown(String),
@@ -82,8 +70,6 @@ impl RuleSelector {
    pub fn prefix_and_code(&self) -> (&'static str, &'static str) {
        match self {
            RuleSelector::All => ("", "ALL"),
-            RuleSelector::C => ("", "C"),
-            RuleSelector::T => ("", "T"),
            RuleSelector::Prefix { prefix, .. } => {
                (prefix.linter().common_prefix(), prefix.short_code())
            }
@@ -152,16 +138,6 @@ impl IntoIterator for &RuleSelector {
    fn into_iter(self) -> Self::IntoIter {
        match self {
            RuleSelector::All => RuleSelectorIter::All(Rule::iter()),
-            RuleSelector::C => RuleSelectorIter::Chain(
-                Linter::Flake8Comprehensions
-                    .into_iter()
-                    .chain(Linter::McCabe.into_iter()),
-            ),
-            RuleSelector::T => RuleSelectorIter::Chain(
-                Linter::Flake8Debugger
-                    .into_iter()
-                    .chain(Linter::Flake8Print.into_iter()),
-            ),
            RuleSelector::Linter(linter) => RuleSelectorIter::Vec(linter.into_iter()),
            RuleSelector::Prefix { prefix, .. } => RuleSelectorIter::Vec(prefix.into_iter()),
        }
@@ -170,7 +146,6 @@ impl IntoIterator for &RuleSelector {

 pub enum RuleSelectorIter {
    All(RuleIter),
-    Chain(std::iter::Chain<std::vec::IntoIter<Rule>, std::vec::IntoIter<Rule>>),
    Vec(std::vec::IntoIter<Rule>),
 }

@@ -180,14 +155,13 @@ impl Iterator for RuleSelectorIter {
    fn next(&mut self) -> Option<Self::Item> {
        match self {
            RuleSelectorIter::All(iter) => iter.next(),
-            RuleSelectorIter::Chain(iter) => iter.next(),
            RuleSelectorIter::Vec(iter) => iter.next(),
        }
    }
 }

 /// A const alternative to the `impl From<RuleCodePrefix> for RuleSelector`
-/// to let us keep the fields of [`RuleSelector`] private.
+// to let us keep the fields of RuleSelector private.
 // Note that Rust doesn't yet support `impl const From<RuleCodePrefix> for
 // RuleSelector` (see https://github.com/rust-lang/rust/issues/67792).
 // TODO(martin): Remove once RuleSelector is an enum with Linter & Rule variants
@@ -203,27 +177,13 @@ impl JsonSchema for RuleSelector {
        "RuleSelector".to_string()
    }

-    fn json_schema(_gen: &mut schemars::gen::SchemaGenerator) -> Schema {
+    fn json_schema(_gen: &mut schemars::gen::SchemaGenerator) -> schemars::schema::Schema {
        Schema::Object(SchemaObject {
            instance_type: Some(InstanceType::String.into()),
            enum_values: Some(
                std::iter::once("ALL".to_string())
                    .chain(
                        RuleCodePrefix::iter()
-                            .filter(|p| {
-                                // Once logical lines are active by default, please remove this.
-                                // This is here because generate-all output otherwise depends on
-                                // the feature sets which makes the test running with
-                                // `--all-features` fail
-                                !Rule::from_code(&format!(
-                                    "{}{}",
-                                    p.linter().common_prefix(),
-                                    p.short_code()
-                                ))
-                                .unwrap()
-                                .lint_source()
-                                .is_logical_lines()
-                            })
                            .map(|p| {
                                let prefix = p.linter().common_prefix();
                                let code = p.short_code();
@@ -247,8 +207,6 @@ impl RuleSelector {
    pub(crate) fn specificity(&self) -> Specificity {
        match self {
            RuleSelector::All => Specificity::All,
-            RuleSelector::T => Specificity::LinterGroup,
-            RuleSelector::C => Specificity::LinterGroup,
            RuleSelector::Linter(..) => Specificity::Linter,
            RuleSelector::Prefix { prefix, .. } => {
                let prefix: &'static str = prefix.short_code();
@@ -268,7 +226,6 @@ impl RuleSelector {
 #[derive(EnumIter, PartialEq, Eq, PartialOrd, Ord)]
 pub(crate) enum Specificity {
    All,
-    LinterGroup,
    Linter,
    Code1Char,
    Code2Chars,
@@ -277,7 +234,6 @@ pub(crate) enum Specificity {
    Code5Chars,
 }

-#[cfg(feature = "clap")]
 mod clap_completion {
    use clap::builder::{PossibleValue, TypedValueParser, ValueParserFactory};
    use strum::IntoEnumIterator;
@@ -317,7 +273,9 @@ mod clap_completion {
                .map_err(|e| clap::Error::raw(clap::error::ErrorKind::InvalidValue, e))
        }

-        fn possible_values(&self) -> Option<Box<dyn Iterator<Item = PossibleValue> + '_>> {
+        fn possible_values(
+            &self,
+        ) -> Option<Box<dyn Iterator<Item = clap::builder::PossibleValue> + '_>> {
            Some(Box::new(
                std::iter::once(PossibleValue::new("ALL").help("all rules")).chain(
                    Linter::iter()
--- a/crates/ruff/src/rules/eradicate/rules.rs
+++ b/crates/ruff/src/rules/eradicate/rules.rs
@@ -1,29 +1,28 @@
+use ruff_macros::{define_violation, derive_message_formats};
 use rustpython_parser::ast::Location;

-use ruff_diagnostics::{AlwaysAutofixableViolation, Diagnostic, Fix};
-use ruff_macros::{derive_message_formats, violation};
-use ruff_python_ast::source_code::Locator;
-use ruff_python_ast::types::Range;
-
-use crate::registry::Rule;
-use crate::settings::{flags, Settings};
-
 use super::detection::comment_contains_code;
+use crate::ast::types::Range;
+use crate::fix::Fix;
+use crate::registry::{Diagnostic, Rule};
+use crate::settings::{flags, Settings};
+use crate::source_code::Locator;
+use crate::violation::AlwaysAutofixableViolation;

-/// ## What it does
-/// Checks for commented-out Python code.
-///
-/// ## Why is this bad?
-/// Commented-out code is dead code, and is often included inadvertently.
-/// It should be removed.
-///
-/// ## Example
-/// ```python
-/// # print('foo')
-/// ```
-#[violation]
-pub struct CommentedOutCode;
-
+define_violation!(
+    /// ## What it does
+    /// Checks for commented-out Python code.
+    ///
+    /// ## Why is this bad?
+    /// Commented-out code is dead code, and is often included inadvertently.
+    /// It should be removed.
+    ///
+    /// ## Example
+    /// ```python
+    /// # print('foo')
+    /// ```
+    pub struct CommentedOutCode;
+);
 impl AlwaysAutofixableViolation for CommentedOutCode {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -56,7 +55,7 @@ pub fn commented_out_code(
 ) -> Option<Diagnostic> {
    let location = Location::new(start.row(), 0);
    let end_location = Location::new(end.row() + 1, 0);
-    let line = locator.slice(Range::new(location, end_location));
+    let line = locator.slice(&Range::new(location, end_location));

    // Verify that the comment is on its own line, and that it contains code.
    if is_standalone_comment(line) && comment_contains_code(line, &settings.task_tags[..]) {
--- a/crates/ruff/src/rules/eradicate/snapshots/ruffruleseradicatetestsERA001_ERA001.py.snap
+++ b/crates/ruff/src/rules/eradicate/snapshots/ruffruleseradicatetestsERA001_ERA001.py.snap
@@ -3,10 +3,7 @@ source: crates/ruff/src/rules/eradicate/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: CommentedOutCode
-    body: Found commented-out code
-    suggestion: Remove commented-out code
-    fixable: true
+    CommentedOutCode: ~
  location:
    row: 1
    column: 0
@@ -23,10 +20,7 @@ expression: diagnostics
      column: 0
  parent: ~
 - kind:
-    name: CommentedOutCode
-    body: Found commented-out code
-    suggestion: Remove commented-out code
-    fixable: true
+    CommentedOutCode: ~
  location:
    row: 2
    column: 0
@@ -43,10 +37,7 @@ expression: diagnostics
      column: 0
  parent: ~
 - kind:
-    name: CommentedOutCode
-    body: Found commented-out code
-    suggestion: Remove commented-out code
-    fixable: true
+    CommentedOutCode: ~
  location:
    row: 3
    column: 0
@@ -63,10 +54,7 @@ expression: diagnostics
      column: 0
  parent: ~
 - kind:
-    name: CommentedOutCode
-    body: Found commented-out code
-    suggestion: Remove commented-out code
-    fixable: true
+    CommentedOutCode: ~
  location:
    row: 5
    column: 0
@@ -83,10 +71,7 @@ expression: diagnostics
      column: 0
  parent: ~
 - kind:
-    name: CommentedOutCode
-    body: Found commented-out code
-    suggestion: Remove commented-out code
-    fixable: true
+    CommentedOutCode: ~
  location:
    row: 12
    column: 4
--- a/crates/ruff/src/rules/flake8_2020/rules.rs
+++ b/crates/ruff/src/rules/flake8_2020/rules.rs
@@ -1,16 +1,15 @@
 use num_bigint::BigInt;
+use ruff_macros::{define_violation, derive_message_formats};
 use rustpython_parser::ast::{Cmpop, Constant, Expr, ExprKind, Located};

-use ruff_diagnostics::{Diagnostic, Violation};
-use ruff_macros::{derive_message_formats, violation};
-use ruff_python_ast::types::Range;
-
+use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
-use crate::registry::Rule;
-
-#[violation]
-pub struct SysVersionSlice3Referenced;
+use crate::registry::{Diagnostic, Rule};
+use crate::violation::Violation;

+define_violation!(
+    pub struct SysVersionSlice3Referenced;
+);
 impl Violation for SysVersionSlice3Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -18,9 +17,9 @@ impl Violation for SysVersionSlice3Referenced {
    }
 }

-#[violation]
-pub struct SysVersion2Referenced;
-
+define_violation!(
+    pub struct SysVersion2Referenced;
+);
 impl Violation for SysVersion2Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -28,9 +27,9 @@ impl Violation for SysVersion2Referenced {
    }
 }

-#[violation]
-pub struct SysVersionCmpStr3;
-
+define_violation!(
+    pub struct SysVersionCmpStr3;
+);
 impl Violation for SysVersionCmpStr3 {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -38,9 +37,9 @@ impl Violation for SysVersionCmpStr3 {
    }
 }

-#[violation]
-pub struct SysVersionInfo0Eq3Referenced;
-
+define_violation!(
+    pub struct SysVersionInfo0Eq3Referenced;
+);
 impl Violation for SysVersionInfo0Eq3Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -48,9 +47,9 @@ impl Violation for SysVersionInfo0Eq3Referenced {
    }
 }

-#[violation]
-pub struct SixPY3Referenced;
-
+define_violation!(
+    pub struct SixPY3Referenced;
+);
 impl Violation for SixPY3Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -58,9 +57,9 @@ impl Violation for SixPY3Referenced {
    }
 }

-#[violation]
-pub struct SysVersionInfo1CmpInt;
-
+define_violation!(
+    pub struct SysVersionInfo1CmpInt;
+);
 impl Violation for SysVersionInfo1CmpInt {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -71,9 +70,9 @@ impl Violation for SysVersionInfo1CmpInt {
    }
 }

-#[violation]
-pub struct SysVersionInfoMinorCmpInt;
-
+define_violation!(
+    pub struct SysVersionInfoMinorCmpInt;
+);
 impl Violation for SysVersionInfoMinorCmpInt {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -84,9 +83,9 @@ impl Violation for SysVersionInfoMinorCmpInt {
    }
 }

-#[violation]
-pub struct SysVersion0Referenced;
-
+define_violation!(
+    pub struct SysVersion0Referenced;
+);
 impl Violation for SysVersion0Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -94,9 +93,9 @@ impl Violation for SysVersion0Referenced {
    }
 }

-#[violation]
-pub struct SysVersionCmpStr10;
-
+define_violation!(
+    pub struct SysVersionCmpStr10;
+);
 impl Violation for SysVersionCmpStr10 {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -104,9 +103,9 @@ impl Violation for SysVersionCmpStr10 {
    }
 }

-#[violation]
-pub struct SysVersionSlice1Referenced;
-
+define_violation!(
+    pub struct SysVersionSlice1Referenced;
+);
 impl Violation for SysVersionSlice1Referenced {
    #[derive_message_formats]
    fn message(&self) -> String {
@@ -144,7 +143,7 @@ pub fn subscript(checker: &mut Checker, value: &Expr, slice: &Expr) {
                    {
                        checker.diagnostics.push(Diagnostic::new(
                            SysVersionSlice1Referenced,
-                            Range::from(value),
+                            Range::from_located(value),
                        ));
                    } else if *i == BigInt::from(3)
                        && checker
@@ -154,7 +153,7 @@ pub fn subscript(checker: &mut Checker, value: &Expr, slice: &Expr) {
                    {
                        checker.diagnostics.push(Diagnostic::new(
                            SysVersionSlice3Referenced,
-                            Range::from(value),
+                            Range::from_located(value),
                        ));
                    }
                }
@@ -167,15 +166,17 @@ pub fn subscript(checker: &mut Checker, value: &Expr, slice: &Expr) {
                if *i == BigInt::from(2)
                    && checker.settings.rules.enabled(&Rule::SysVersion2Referenced)
                {
-                    checker
-                        .diagnostics
-                        .push(Diagnostic::new(SysVersion2Referenced, Range::from(value)));
+                    checker.diagnostics.push(Diagnostic::new(
+                        SysVersion2Referenced,
+                        Range::from_located(value),
+                    ));
                } else if *i == BigInt::from(0)
                    && checker.settings.rules.enabled(&Rule::SysVersion0Referenced)
                {
-                    checker
-                        .diagnostics
-                        .push(Diagnostic::new(SysVersion0Referenced, Range::from(value)));
+                    checker.diagnostics.push(Diagnostic::new(
+                        SysVersion0Referenced,
+                        Range::from_located(value),
+                    ));
                }
            }

@@ -214,7 +215,7 @@ pub fn compare(checker: &mut Checker, left: &Expr, ops: &[Cmpop], comparators: &
                        {
                            checker.diagnostics.push(Diagnostic::new(
                                SysVersionInfo0Eq3Referenced,
-                                Range::from(left),
+                                Range::from_located(left),
                            ));
                        }
                    }
@@ -232,9 +233,10 @@ pub fn compare(checker: &mut Checker, left: &Expr, ops: &[Cmpop], comparators: &
                    ) = (ops, comparators)
                    {
                        if checker.settings.rules.enabled(&Rule::SysVersionInfo1CmpInt) {
-                            checker
-                                .diagnostics
-                                .push(Diagnostic::new(SysVersionInfo1CmpInt, Range::from(left)));
+                            checker.diagnostics.push(Diagnostic::new(
+                                SysVersionInfo1CmpInt,
+                                Range::from_located(left),
+                            ));
                        }
                    }
                }
@@ -263,7 +265,7 @@ pub fn compare(checker: &mut Checker, left: &Expr, ops: &[Cmpop], comparators: &
                {
                    checker.diagnostics.push(Diagnostic::new(
                        SysVersionInfoMinorCmpInt,
-                        Range::from(left),
+                        Range::from_located(left),
                    ));
                }
            }
@@ -287,14 +289,16 @@ pub fn compare(checker: &mut Checker, left: &Expr, ops: &[Cmpop], comparators: &
        {
            if s.len() == 1 {
                if checker.settings.rules.enabled(&Rule::SysVersionCmpStr10) {
-                    checker
-                        .diagnostics
-                        .push(Diagnostic::new(SysVersionCmpStr10, Range::from(left)));
+                    checker.diagnostics.push(Diagnostic::new(
+                        SysVersionCmpStr10,
+                        Range::from_located(left),
+                    ));
                }
            } else if checker.settings.rules.enabled(&Rule::SysVersionCmpStr3) {
-                checker
-                    .diagnostics
-                    .push(Diagnostic::new(SysVersionCmpStr3, Range::from(left)));
+                checker.diagnostics.push(Diagnostic::new(
+                    SysVersionCmpStr3,
+                    Range::from_located(left),
+                ));
            }
        }
    }
@@ -309,6 +313,6 @@ pub fn name_or_attribute(checker: &mut Checker, expr: &Expr) {
    {
        checker
            .diagnostics
-            .push(Diagnostic::new(SixPY3Referenced, Range::from(expr)));
+            .push(Diagnostic::new(SixPY3Referenced, Range::from_located(expr)));
    }
 }
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT101_YTT101.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT101_YTT101.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionSlice3Referenced
-    body: "`sys.version[:3]` referenced (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionSlice3Referenced: ~
  location:
    row: 6
    column: 6
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionSlice3Referenced
-    body: "`sys.version[:3]` referenced (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionSlice3Referenced: ~
  location:
    row: 7
    column: 6
@@ -29,10 +23,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionSlice3Referenced
-    body: "`sys.version[:3]` referenced (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionSlice3Referenced: ~
  location:
    row: 8
    column: 6
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT102_YTT102.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT102_YTT102.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersion2Referenced
-    body: "`sys.version[2]` referenced (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersion2Referenced: ~
  location:
    row: 4
    column: 11
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersion2Referenced
-    body: "`sys.version[2]` referenced (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersion2Referenced: ~
  location:
    row: 5
    column: 11
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT103_YTT103.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT103_YTT103.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionCmpStr3
-    body: "`sys.version` compared to string (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr3: ~
  location:
    row: 4
    column: 0
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr3
-    body: "`sys.version` compared to string (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr3: ~
  location:
    row: 5
    column: 0
@@ -29,10 +23,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr3
-    body: "`sys.version` compared to string (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr3: ~
  location:
    row: 6
    column: 0
@@ -42,10 +33,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr3
-    body: "`sys.version` compared to string (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr3: ~
  location:
    row: 7
    column: 0
@@ -55,10 +43,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr3
-    body: "`sys.version` compared to string (python3.10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr3: ~
  location:
    row: 8
    column: 0
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT201_YTT201.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT201_YTT201.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionInfo0Eq3Referenced
-    body: "`sys.version_info[0] == 3` referenced (python4), use `>=`"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo0Eq3Referenced: ~
  location:
    row: 7
    column: 6
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionInfo0Eq3Referenced
-    body: "`sys.version_info[0] == 3` referenced (python4), use `>=`"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo0Eq3Referenced: ~
  location:
    row: 8
    column: 6
@@ -29,10 +23,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionInfo0Eq3Referenced
-    body: "`sys.version_info[0] == 3` referenced (python4), use `>=`"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo0Eq3Referenced: ~
  location:
    row: 9
    column: 6
@@ -42,10 +33,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionInfo0Eq3Referenced
-    body: "`sys.version_info[0] == 3` referenced (python4), use `>=`"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo0Eq3Referenced: ~
  location:
    row: 10
    column: 6
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT202_YTT202.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT202_YTT202.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SixPY3Referenced
-    body: "`six.PY3` referenced (python4), use `not six.PY2`"
-    suggestion: ~
-    fixable: false
+    SixPY3Referenced: ~
  location:
    row: 4
    column: 3
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SixPY3Referenced
-    body: "`six.PY3` referenced (python4), use `not six.PY2`"
-    suggestion: ~
-    fixable: false
+    SixPY3Referenced: ~
  location:
    row: 6
    column: 3
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT203_YTT203.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT203_YTT203.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionInfo1CmpInt
-    body: "`sys.version_info[1]` compared to integer (python4), compare `sys.version_info` to tuple"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo1CmpInt: ~
  location:
    row: 4
    column: 0
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionInfo1CmpInt
-    body: "`sys.version_info[1]` compared to integer (python4), compare `sys.version_info` to tuple"
-    suggestion: ~
-    fixable: false
+    SysVersionInfo1CmpInt: ~
  location:
    row: 5
    column: 0
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT204_YTT204.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT204_YTT204.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionInfoMinorCmpInt
-    body: "`sys.version_info.minor` compared to integer (python4), compare `sys.version_info` to tuple"
-    suggestion: ~
-    fixable: false
+    SysVersionInfoMinorCmpInt: ~
  location:
    row: 4
    column: 0
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionInfoMinorCmpInt
-    body: "`sys.version_info.minor` compared to integer (python4), compare `sys.version_info` to tuple"
-    suggestion: ~
-    fixable: false
+    SysVersionInfoMinorCmpInt: ~
  location:
    row: 5
    column: 0
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT301_YTT301.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT301_YTT301.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersion0Referenced
-    body: "`sys.version[0]` referenced (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersion0Referenced: ~
  location:
    row: 4
    column: 11
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersion0Referenced
-    body: "`sys.version[0]` referenced (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersion0Referenced: ~
  location:
    row: 5
    column: 11
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT302_YTT302.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT302_YTT302.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionCmpStr10
-    body: "`sys.version` compared to string (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr10: ~
  location:
    row: 4
    column: 0
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr10
-    body: "`sys.version` compared to string (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr10: ~
  location:
    row: 5
    column: 0
@@ -29,10 +23,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr10
-    body: "`sys.version` compared to string (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr10: ~
  location:
    row: 6
    column: 0
@@ -42,10 +33,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr10
-    body: "`sys.version` compared to string (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr10: ~
  location:
    row: 7
    column: 0
@@ -55,10 +43,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionCmpStr10
-    body: "`sys.version` compared to string (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionCmpStr10: ~
  location:
    row: 8
    column: 0
--- a/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT303_YTT303.py.snap
+++ b/crates/ruff/src/rules/flake8_2020/snapshots/ruffrulesflake8_2020testsYTT303_YTT303.py.snap
@@ -1,12 +1,9 @@
 ---
-source: crates/ruff/src/rules/flake8_2020/mod.rs
+source: src/rules/flake8_2020/mod.rs
 expression: diagnostics
 ---
 - kind:
-    name: SysVersionSlice1Referenced
-    body: "`sys.version[:1]` referenced (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionSlice1Referenced: ~
  location:
    row: 4
    column: 6
@@ -16,10 +13,7 @@ expression: diagnostics
  fix: ~
  parent: ~
 - kind:
-    name: SysVersionSlice1Referenced
-    body: "`sys.version[:1]` referenced (python10), use `sys.version_info`"
-    suggestion: ~
-    fixable: false
+    SysVersionSlice1Referenced: ~
  location:
    row: 5
    column: 6
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Charlie Marsh	4a8b65b429	Remove pydantic.BaseModel from defaults	2023-03-05 18:21:34 -05:00
Charlie Marsh	5afe4bf711	Tweak interfaces to take Context	2023-03-05 18:17:49 -05:00
Charlie Marsh	b307200e42	Merge branch 'main' into sasanjac/2195-Implement-configuration-options-from-`flake8-type-checking`	2023-03-05 18:05:53 -05:00
Charlie Marsh	13f63072df	Treat function type annotations within classes as runtime-required (#3312 )	2023-03-03 09:08:30 +01:00
Sasan Jacob Rasti	bcba5f176d	Refactor	2023-03-03 09:08:30 +01:00
Sasan Jacob Rasti	223a5b4631	Implement configuration options `runtime-evaluated-decorators` and `runtime-evaluated-baseclasses` for `flake8-type-checking` see #2195	2023-03-03 09:07:40 +01:00