Bump version to 0.0.279 (#5949)

**Summary** I accidentally merged earlier while the RustPython parser
rev was still pointing to the feature branch instead of to the merged
main. This make the rev point to the RustPython parser repo main again

.cargo/config.toml

@@ -0,0 +1,37 @@
+[alias]
+dev = "run --package ruff_dev --bin ruff_dev"
+benchmark = "bench -p ruff_benchmark --bench linter --bench formatter --"
+
+[target.'cfg(all())']
+rustflags = [
+  # CLIPPY LINT SETTINGS
+  # This is a workaround to configure lints for the entire workspace, pending the ability to configure this via TOML.
+  # See: `https://github.com/rust-lang/cargo/issues/5034`
+  #      `https://github.com/EmbarkStudios/rust-ecosystem/issues/22#issuecomment-947011395`
+  "-Dunsafe_code",
+  "-Wclippy::pedantic",
+  # Allowed pedantic lints
+  "-Wclippy::char_lit_as_u8",
+  "-Aclippy::collapsible_else_if",
+  "-Aclippy::collapsible_if",
+  "-Aclippy::implicit_hasher",
+  "-Aclippy::match_same_arms",
+  "-Aclippy::missing_errors_doc",
+  "-Aclippy::missing_panics_doc",
+  "-Aclippy::module_name_repetitions",
+  "-Aclippy::must_use_candidate",
+  "-Aclippy::similar_names",
+  "-Aclippy::too_many_lines",
+  # Disallowed restriction lints
+  "-Wclippy::print_stdout",
+  "-Wclippy::print_stderr",
+  "-Wclippy::dbg_macro",
+  "-Wclippy::empty_drop",
+  "-Wclippy::empty_structs_with_brackets",
+  "-Wclippy::exit",
+  "-Wclippy::get_unwrap",
+  "-Wclippy::rc_buffer",
+  "-Wclippy::rc_mutex",
+  "-Wclippy::rest_pat_in_fully_bound_structs",
+  "-Wunreachable_pub"
+]

.devcontainer/devcontainer.json

@@ -0,0 +1,46 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/rust
+{
+	"name": "Ruff",
+	"image": "mcr.microsoft.com/devcontainers/rust:0-1-bullseye",
+	"mounts": [
+		{
+			"source": "devcontainer-cargo-cache-${devcontainerId}",
+			"target": "/usr/local/cargo",
+			"type": "volume"
+		}
+	],
+	"customizations": {
+		"codespaces": {
+			"openFiles": [
+				"CONTRIBUTING.md"
+			]
+		},
+		"vscode": {
+			"extensions": [
+				"ms-python.python",
+				"rust-lang.rust-analyzer",
+				"serayuzgur.crates",
+				"tamasfe.even-better-toml",
+				"Swellaby.vscode-rust-test-adapter",
+				"charliermarsh.ruff"
+			],
+			"settings": {
+				"rust-analyzer.updates.askBeforeDownload": false
+			}
+		}
+	},
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	"features": {
+		"ghcr.io/devcontainers/features/python": {
+			"installTools": false
+		}
+	},
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+	"postCreateCommand": ".devcontainer/post-create.sh"
+	// Configure tool-specific properties.
+	// "customizations": {},
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.devcontainer/post-create.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+rustup default < rust-toolchain
+rustup component add clippy rustfmt
+cargo install cargo-insta
+cargo fetch
+
+pip install maturin pre-commit

.editorconfig

@@ -12,3 +12,9 @@ indent_size = 2
 
 [*.{rs,py}]
 indent_size = 4
+
+[*.snap]
+trim_trailing_whitespace = false
+
+[*.md]
+max_line_length = 100

.gitattributes

@@ -0,0 +1,7 @@
+* text=auto eol=lf
+
+crates/ruff/resources/test/fixtures/isort/line_ending_crlf.py text eol=crlf
+crates/ruff/resources/test/fixtures/pycodestyle/W605_1.py text eol=crlf
+
+ruff.schema.json linguist-generated=true text=auto eol=lf
+*.md.snap linguist-language=Markdown

.github/CODEOWNERS

@@ -0,0 +1,9 @@
+# GitHub code owners file. For more info: https://help.github.com/articles/about-codeowners/
+#
+# - Comment lines begin with `#` character.
+# - Each line is a file pattern followed by one or more owners.
+# - The '*' pattern is global owners.
+# - Order is important. The last matching pattern has the most precedence.
+
+# Jupyter
+/crates/ruff/src/jupyter/ @dhruvmanila

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,10 @@
+<!--
+Thank you for taking the time to report an issue! We're glad to have you involved with Ruff.
+
+If you're filing a bug report, please consider including the following information:
+
+* A minimal code snippet that reproduces the bug.
+* The command you invoked (e.g., `ruff /path/to/file.py --fix`), ideally including the `--isolated` flag.
+* The current Ruff settings (any relevant sections from your `pyproject.toml`).
+* The current Ruff version (`ruff --version`).
+-->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,15 @@
+<!--
+Thank you for contributing to Ruff! To help us out with reviewing, please consider the following:
+
+- Does this pull request include a summary of the change? (See below.)
+- Does this pull request include a descriptive title?
+- Does this pull request include references to any relevant issues?
+-->
+
+## Summary
+
+<!-- What's the purpose of the change? What does it do, and why? -->
+
+## Test Plan
+
+<!-- How was it tested? -->

.github/dependabot.yml

@@ -0,0 +1,11 @@
+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)"

.github/release.yml

@@ -0,0 +1,24 @@
+# https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes#configuring-automatically-generated-release-notes
+changelog:
+  exclude:
+    labels:
+      - internal
+      - documentation
+  categories:
+    - title: Breaking Changes
+      labels:
+        - breaking
+    - title: Rules
+      labels:
+        - rule
+        - autofix
+    - title: Settings
+      labels:
+        - configuration
+        - cli
+    - title: Bug Fixes
+      labels:
+        - bug
+    - title: Other Changes
+      labels:
+        - "*"

.github/workflows/benchmark.yaml

@@ -0,0 +1,136 @@
+name: Benchmark
+
+on:
+  pull_request:
+    paths:
+      - 'Cargo.toml'
+      - 'Cargo.lock'
+      - 'rust-toolchain'
+      - 'crates/**'
+      - '!crates/ruff_dev'
+      - '!crates/ruff_shrinking'
+
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  run-benchmark:
+    if: github.event_name == 'pull_request'
+    name: "Run | ${{ matrix.os }}"
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest ]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: "PR - Checkout Branch"
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: "PR - Install Rust toolchain"
+        run: rustup show
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: "PR - Build benchmarks"
+        run: cargo bench -p ruff_benchmark --no-run
+
+      - name: "PR - Run benchmarks"
+        run: cargo benchmark --save-baseline=pr
+
+      - name: "Main - Checkout Branch"
+        uses: actions/checkout@v3
+        with:
+          clean: false
+          ref: main
+
+      - name: "Main - Install Rust toolchain"
+        run: rustup show
+
+      - name: "Main - Build benchmarks"
+        run: cargo bench -p ruff_benchmark --no-run
+
+      - name: "Main - Run benchmarks"
+        run: cargo benchmark --save-baseline=main
+
+      - name: "Upload benchmark results"
+        uses: actions/upload-artifact@v3
+        with:
+          name: benchmark-results-${{ matrix.os }}
+          path: ./target/criterion
+
+      # Cleanup
+      - name: Remove Criterion Artifact
+        uses: JesseTG/rm@v1.0.3
+        with:
+          path: ./target/criterion
+
+  benchmark-compare:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    name: Compare
+    needs:
+      - run-benchmark
+
+    steps:
+      - name: "Install Rust toolchain"
+        run: rustup show
+
+      - name: "Install critcmp"
+        uses: taiki-e/install-action@v2
+        with:
+          tool: critcmp
+
+      - name: "Linux | Download PR benchmark results"
+        uses: actions/download-artifact@v3
+        with:
+          name: benchmark-results-ubuntu-latest
+          path: ./target/criterion
+
+      - name: "Linux | Compare benchmark results"
+        shell: bash
+        run: |
+          echo "### Benchmark" >> summary.md
+          echo "#### Linux" >> summary.md
+          echo "\`\`\`" >> summary.md
+          critcmp main pr >> summary.md
+          echo "\`\`\`" >> summary.md
+          echo "" >> summary.md
+
+      - name: "Linux | Cleanup benchmark results"
+        run: rm -rf ./target/criterion
+
+      - name: "Windows | Download PR benchmark results"
+        uses: actions/download-artifact@v3
+        with:
+          name: benchmark-results-windows-latest
+          path: ./target/criterion
+
+      - name: "Windows | Compare benchmark results"
+        shell: bash
+        run: |
+          echo "#### Windows" >> summary.md
+          echo "\`\`\`" >> summary.md
+          critcmp main pr >> summary.md
+          echo "\`\`\`" >> summary.md
+          echo "" >> summary.md
+
+          echo ${{ github.event.pull_request.number }} > pr-number
+
+          cat summary.md > $GITHUB_STEP_SUMMARY
+
+      - uses: actions/upload-artifact@v3
+        name: Upload PR Number
+        with:
+          name: pr-number
+          path: pr-number
+
+      - uses: actions/upload-artifact@v3
+        name: Upload Summary
+        with:
+          name: summary
+          path: summary.md

.github/workflows/ci.yaml

@@ -2,121 +2,335 @@ name: CI
 
 on:
   push:
-    branches: [main]
+    branches: [ main ]
   pull_request:
-    branches: [main]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
+  RUSTUP_MAX_RETRIES: 10
+  PACKAGE_NAME: ruff
+  PYTHON_VERSION: "3.11" # to build abi3 wheels
 
 jobs:
-  cargo_build:
-    name: "cargo build"
+  determine_changes:
+    name: "Determine changes"
     runs-on: ubuntu-latest
+    outputs:
+      linter: ${{ steps.changed.outputs.linter_any_changed }}
+      formatter: ${{ steps.changed.outputs.formatter_any_changed }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
         with:
-          toolchain: stable
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-cargo
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - run: cargo build --release
+          fetch-depth: 0
 
-  cargo_fmt:
+      - uses: tj-actions/changed-files@v37
+        id: changed
+        with:
+          files_yaml: |
+            linter:
+              - Cargo.toml
+              - Cargo.lock
+              - crates/**
+              - "!crates/ruff_python_formatter/**"
+              - "!crates/ruff_formatter/**"
+              - "!crates/ruff_dev/**"
+              - "!crates/ruff_shrinking/**"
+
+            formatter:
+              - Cargo.toml
+              - Cargo.lock
+              - crates/ruff_python_formatter/**
+              - crates/ruff_formatter/**
+              - crates/ruff_python_trivia/**
+              - crates/ruff_python_ast/**
+
+
+  cargo-fmt:
     name: "cargo fmt"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-cargo
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - run: cargo fmt --check
+      - name: "Install Rust toolchain"
+        run: rustup component add rustfmt
+      - run: cargo fmt --all --check
 
-  cargo_clippy:
+  cargo-clippy:
     name: "cargo clippy"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-cargo
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - run: cargo clippy -- -D warnings
+      - name: "Install Rust toolchain"
+        run: |
+          rustup component add clippy
+          rustup target add wasm32-unknown-unknown
+      - uses: Swatinem/rust-cache@v2
+      - name: "Clippy"
+        run: cargo clippy --workspace --all-targets --all-features -- -D warnings
+      - name: "Clippy (wasm)"
+        run: cargo clippy -p ruff_wasm --target wasm32-unknown-unknown --all-features -- -D warnings
 
-  cargo_test:
-    name: "cargo test"
+  cargo-test:
+    strategy:
+      matrix:
+        os: [ ubuntu-latest, windows-latest ]
+    runs-on: ${{ matrix.os }}
+    name: "cargo test | ${{ matrix.os }}"
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Install cargo insta"
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-insta
+      - run: pip install black[d]==23.1.0
+      - uses: Swatinem/rust-cache@v2
+      - name: "Run tests (Ubuntu)"
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        run: cargo insta test --all --all-features --unreferenced reject
+      - name: "Run tests (Windows)"
+        if: ${{ matrix.os == 'windows-latest' }}
+        shell: bash
+        # We can't reject unreferenced snapshots on windows because flake8_executable can't run on windows
+        run: cargo insta test --all --all-features
+      - run: cargo test --package ruff_cli --test black_compatibility_test -- --ignored
+        # TODO: Skipped as it's currently broken. The resource were moved from the
+        # ruff_cli to ruff crate, but this test was not updated.
+        if: false
+      # Check for broken links in the documentation.
+      - run: cargo doc --all --no-deps
+        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
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        with:
+          name: ruff
+          path: target/debug/ruff
+
+  cargo-fuzz:
+    runs-on: ubuntu-latest
+    name: "cargo fuzz"
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: "fuzz -> target"
+      - name: "Install cargo-fuzz"
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-fuzz@0.11
+      - run: cargo fuzz build -s none
+
+  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"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-cargo
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - run: cargo test
+      - name: "Install Rust toolchain"
+        run: rustup component add rustfmt
+      - uses: Swatinem/rust-cache@v2
+      - run: ./scripts/add_rule.py --name DoTheThing --prefix PL --code C0999 --linter pylint
+      - run: cargo check
+      - run: cargo fmt --all --check
+      - run: |
+          ./scripts/add_plugin.py test --url https://pypi.org/project/-test/0.1.0/ --prefix TST
+          ./scripts/add_rule.py --name FirstRule --prefix TST --code 001 --linter test
+      - run: cargo check
+      - run: cargo fmt --all --check
 
-  maturin_build:
-    name: "maturin build"
+  ecosystem:
+    name: "ecosystem"
     runs-on: ubuntu-latest
+    needs:
+      - cargo-test
+      - determine_changes
+    # 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' && needs.determine_changes.outputs.linter == 'true'
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
-      - run: pip install maturin
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-cargo
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - uses: actions/download-artifact@v3
+        name: Download Ruff binary
+        id: ruff-target
         with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - run: maturin build -b bin
+          name: ruff
+          path: target/debug
+
+      - uses: dawidd6/action-download-artifact@v2
+        name: Download base results
+        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
+          cat ecosystem-result > $GITHUB_STEP_SUMMARY
+
+          echo ${{ github.event.number }} > pr-number
+
+      - uses: actions/upload-artifact@v3
+        name: Upload PR Number
+        with:
+          name: pr-number
+          path: pr-number
+
+      - uses: actions/upload-artifact@v3
+        name: Upload Results
+        with:
+          name: ecosystem-result
+          path: ecosystem-result
+
+  cargo-udeps:
+    name: "cargo udeps"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Install nightly Rust toolchain"
+        # Only pinned to make caching work, update freely
+        run: rustup toolchain install nightly-2023-06-08
+      - uses: Swatinem/rust-cache@v2
+      - name: "Install cargo-udeps"
+        uses: taiki-e/install-action@cargo-udeps
+      - name: "Run cargo-udeps"
+        run: cargo +nightly-2023-06-08 udeps
+
+
+  python-package:
+    name: "python package"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: x64
+      - uses: Swatinem/rust-cache@v2
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          args: --out dist
+      - name: "Test wheel"
+        run: |
+          pip install --force-reinstall --find-links dist ${{ env.PACKAGE_NAME }}
+          ruff --help
+          python -m ruff --help
+      - name: "Remove wheels from cache"
+        run: rm -rf target/wheels
+
+  pre-commit:
+    name: "pre-commit"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: "Install pre-commit"
+        run: pip install pre-commit
+      - name: "Cache pre-commit"
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/pre-commit
+          key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
+      - name: "Run pre-commit"
+        run: |
+          echo '```console' > $GITHUB_STEP_SUMMARY
+          # Enable color output for pre-commit and remove it for the summary
+          SKIP=cargo-fmt,clippy,dev-generate-all pre-commit run --all-files --show-diff-on-failure --color=always | \
+            tee >(sed -E 's/\x1B\[([0-9]{1,2}(;[0-9]{1,2})*)?[mGK]//g' >> $GITHUB_STEP_SUMMARY) >&1
+          exit_code=${PIPESTATUS[0]}
+          echo '```' >> $GITHUB_STEP_SUMMARY
+          exit $exit_code
+
+  docs:
+    name: "mkdocs"
+    runs-on: ubuntu-latest
+    env:
+      MKDOCS_INSIDERS_SSH_KEY_EXISTS: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY != '' }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+      - name: "Add SSH key"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        uses: webfactory/ssh-agent@v0.8.0
+        with:
+          ssh-private-key: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY }}
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: "Install Insiders dependencies"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        run: pip install -r docs/requirements-insiders.txt
+      - name: "Install dependencies"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS != 'true' }}
+        run: pip install -r docs/requirements.txt
+      - name: "Update README File"
+        run: python scripts/transform_readme.py --target mkdocs
+      - name: "Generate docs"
+        run: python scripts/generate_mkdocs.py
+      - name: "Check docs formatting"
+        run: python scripts/check_docs_formatted.py
+      - name: "Build Insiders docs"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        run: mkdocs build --strict -f mkdocs.insiders.yml
+      - name: "Build docs"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS != 'true' }}
+        run: mkdocs build --strict -f mkdocs.generated.yml
+
+  check-formatter-stability:
+    name: "Check formatter stability"
+    runs-on: ubuntu-latest
+    needs: determine_changes
+    if: needs.determine_changes.outputs.formatter == 'true'
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Cache rust"
+        uses: Swatinem/rust-cache@v2
+      - name: "Clone CPython 3.10"
+        run: git clone --branch 3.10 --depth 1 https://github.com/python/cpython.git crates/ruff/resources/test/cpython
+      - name: "Check stability"
+        run: cargo run --bin ruff_dev -- format-dev --stability-check crates/ruff/resources/test/cpython

.github/workflows/docs.yaml

@@ -0,0 +1,47 @@
+name: mkdocs
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ published ]
+
+jobs:
+  mkdocs:
+    runs-on: ubuntu-latest
+    env:
+      CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
+      MKDOCS_INSIDERS_SSH_KEY_EXISTS: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY != '' }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+      - name: "Add SSH key"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        uses: webfactory/ssh-agent@v0.8.0
+        with:
+          ssh-private-key: ${{ secrets.MKDOCS_INSIDERS_SSH_KEY }}
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: "Install Insiders dependencies"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        run: pip install -r docs/requirements-insiders.txt
+      - name: "Install dependencies"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS != 'true' }}
+        run: pip install -r docs/requirements.txt
+      - name: "Copy README File"
+        run: |
+          python scripts/transform_readme.py --target mkdocs
+          python scripts/generate_mkdocs.py
+      - name: "Build Insiders docs"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS == 'true' }}
+        run: mkdocs build --strict -f mkdocs.insiders.yml
+      - name: "Build docs"
+        if: ${{ env.MKDOCS_INSIDERS_SSH_KEY_EXISTS != 'true' }}
+        run: mkdocs build --strict -f mkdocs.generated.yml
+      - name: "Deploy to Cloudflare Pages"
+        if: ${{ env.CF_API_TOKEN_EXISTS == 'true' }}
+        uses: cloudflare/wrangler-action@2.0.0
+        with:
+          apiToken: ${{ secrets.CF_API_TOKEN }}
+          accountId: ${{ secrets.CF_ACCOUNT_ID }}
+          command: pages publish site --project-name=ruff-docs --branch ${GITHUB_HEAD_REF} --commit-hash ${GITHUB_SHA}

.github/workflows/flake8-to-ruff.yaml

@@ -0,0 +1,247 @@
+name: "[flake8-to-ruff] Release"
+
+on: workflow_dispatch
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  PACKAGE_NAME: flake8-to-ruff
+  CRATE_NAME: flake8_to_ruff
+  PYTHON_VERSION: "3.11"
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
+  RUSTUP_MAX_RETRIES: 10
+
+jobs:
+  macos-x86_64:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: x64
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Build wheels - x86_64"
+        uses: PyO3/maturin-action@v1
+        with:
+          target: x86_64
+          args: --release --out dist --sdist -m ./${{ env.CRATE_NAME }}/Cargo.toml
+      - name: "Install built wheel - x86_64"
+        run: |
+          pip install dist/${{ env.CRATE_NAME }}-*.whl --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+  macos-universal:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: x64
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Build wheels - universal2"
+        uses: PyO3/maturin-action@v1
+        with:
+          args: --release --target universal2-apple-darwin --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
+      - name: "Install built wheel - universal2"
+        run: |
+          pip install dist/${{ env.CRATE_NAME }}-*universal2.whl --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  windows:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        target: [ x64, x86 ]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: ${{ matrix.target }}
+      - name: "Install Rust toolchain"
+        run: rustup show
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}
+          args: --release --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
+      - name: "Install built wheel"
+        shell: bash
+        run: |
+          python -m pip install dist/${{ env.CRATE_NAME }}-*.whl --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  linux:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [ x86_64, i686 ]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: x64
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}
+          manylinux: auto
+          args: --release --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
+      - name: "Install built wheel"
+        if: matrix.target == 'x86_64'
+        run: |
+          pip install dist/${{ env.CRATE_NAME }}-*.whl --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  linux-cross:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [ aarch64, armv7, s390x, ppc64le, ppc64 ]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          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
+        if: matrix.target != 'ppc64'
+        name: Install built wheel
+        with:
+          arch: ${{ matrix.target }}
+          distro: ubuntu20.04
+          githubToken: ${{ github.token }}
+          install: |
+            apt-get update
+            apt-get install -y --no-install-recommends python3 python3-pip
+            pip3 install -U pip
+          run: |
+            pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  musllinux:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target:
+          - x86_64-unknown-linux-musl
+          - i686-unknown-linux-musl
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          architecture: x64
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}
+          manylinux: musllinux_1_2
+          args: --release --out dist -m ./${{ env.CRATE_NAME }}/Cargo.toml
+      - name: "Install built wheel"
+        if: matrix.target == 'x86_64-unknown-linux-musl'
+        uses: addnab/docker-run-action@v3
+        with:
+          image: alpine:latest
+          options: -v ${{ github.workspace }}:/io -w /io
+          run: |
+            apk add py3-pip
+            pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links /io/dist/ --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  musllinux-cross:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        platform:
+          - target: aarch64-unknown-linux-musl
+            arch: aarch64
+          - target: armv7-unknown-linux-musleabihf
+            arch: armv7
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
+        with:
+          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
+        name: Install built wheel
+        with:
+          arch: ${{ matrix.platform.arch }}
+          distro: alpine_latest
+          githubToken: ${{ github.token }}
+          install: |
+            apk add py3-pip
+          run: |
+            pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    needs:
+      - macos-universal
+      - macos-x86_64
+      - windows
+      - linux
+      - linux-cross
+      - musllinux
+      - musllinux-cross
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: wheels
+      - uses: actions/setup-python@v4
+      - name: "Publish to PyPi"
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.FLAKE8_TO_RUFF_TOKEN }}
+        run: |
+          pip install --upgrade twine
+          twine upload --skip-existing *

.github/workflows/playground.yaml

@@ -0,0 +1,47 @@
+name: "[Playground] Release"
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ published ]
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
+  RUSTUP_MAX_RETRIES: 10
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    env:
+      CF_API_TOKEN_EXISTS: ${{ secrets.CF_API_TOKEN != '' }}
+    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: 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
+      - name: "Install Node dependencies"
+        run: npm ci
+        working-directory: playground
+      - name: "Run TypeScript checks"
+        run: npm run check
+        working-directory: playground
+      - name: "Build JavaScript bundle"
+        run: npm run build
+        working-directory: playground
+      - name: "Deploy to Cloudflare Pages"
+        if: ${{ env.CF_API_TOKEN_EXISTS == 'true' }}
+        uses: cloudflare/wrangler-action@2.0.0
+        with:
+          apiToken: ${{ secrets.CF_API_TOKEN }}
+          accountId: ${{ secrets.CF_ACCOUNT_ID }}
+          command: pages publish playground/dist --project-name=ruff --branch ${GITHUB_HEAD_REF} --commit-hash ${GITHUB_SHA}

.github/workflows/pr-comment.yaml

@@ -0,0 +1,84 @@
+name: PR Check Comment
+
+on:
+  workflow_run:
+    workflows: [ CI, Benchmark ]
+    types: [ completed ]
+  workflow_dispatch:
+    inputs:
+      workflow_run_id:
+        description: The ecosystem workflow that triggers the workflow run
+        required: true
+
+permissions:
+  pull-requests: write
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dawidd6/action-download-artifact@v2
+        name: Download PR Number
+        with:
+          name: pr-number
+          run_id: ${{ github.event.workflow_run.id ||  github.event.inputs.workflow_run_id }}
+          if_no_artifact_found: ignore
+
+      - name: Extract PR Number
+        id: pr-number
+        run: |
+          if [[ -f pr-number ]]
+          then
+            echo "pr-number=$(<pr-number)" >> $GITHUB_OUTPUT
+          fi
+
+      - uses: dawidd6/action-download-artifact@v2
+        name: "Download Ecosystem Result"
+        id: download-ecosystem-result
+        if: steps.pr-number.outputs.pr-number
+        with:
+          name: ecosystem-result
+          workflow: ci.yaml
+          pr: ${{ steps.pr-number.outputs.pr-number }}
+          path: pr/ecosystem
+          if_no_artifact_found: ignore
+
+      - uses: dawidd6/action-download-artifact@v2
+        name: "Download Benchmark Result"
+        id: download-benchmark-result
+        if: steps.pr-number.outputs.pr-number
+        with:
+          name: summary
+          workflow: benchmark.yaml
+          pr: ${{ steps.pr-number.outputs.pr-number }}
+          path: pr/benchmark
+          if_no_artifact_found: ignore
+
+      - name: Generate Comment
+        id: generate-comment
+        if: steps.download-ecosystem-result.outputs.found_artifact == 'true' || steps.download-benchmark-result.outputs.found_artifact == 'true'
+        run: |
+          echo 'comment<<EOF' >> $GITHUB_OUTPUT
+          echo '## PR Check Results' >> $GITHUB_OUTPUT
+
+          if [[ -f pr/ecosystem/ecosystem-result ]]
+          then
+            echo "### Ecosystem" >> $GITHUB_OUTPUT
+            cat pr/ecosystem/ecosystem-result >> $GITHUB_OUTPUT
+            echo "" >> $GITHUB_OUTPUT
+          fi
+
+          if [[ -f pr/benchmark/summary.md ]]
+          then
+            cat pr/benchmark/summary.md >> $GITHUB_OUTPUT
+          fi
+
+          echo 'EOF' >> $GITHUB_OUTPUT
+
+      - name: Create or update comment
+        if: steps.generate-comment.outputs.comment
+        uses: thollander/actions-comment-pull-request@v2
+        with:
+          pr_number: ${{ steps.pr-number.outputs.pr-number }}
+          message: ${{ steps.generate-comment.outputs.comment }}
+          comment_tag: PR Check Results

.github/workflows/release.yaml

@@ -1,11 +1,18 @@
-name: Release
+name: "[ruff] Release"
 
 on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "The version to tag, without the leading 'v'. If omitted, will initiate a dry run (no uploads)."
+        type: string
+      sha:
+        description: "Optionally, the full sha of the commit to be released"
+        type: string
   pull_request:
-    branches: [main]
-  create:
-    tags:
-      - v*
+    paths:
+      # When we change pyproject.toml, we want to ensure that the maturin builds still work
+      - pyproject.toml
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -13,9 +20,39 @@ concurrency:
 
 env:
   PACKAGE_NAME: ruff
-  PYTHON_VERSION: "3.7" # to build abi3 wheels
+  PYTHON_VERSION: "3.11"
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
+  RUSTUP_MAX_RETRIES: 10
 
 jobs:
+  sdist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build sdist"
+        uses: PyO3/maturin-action@v1
+        with:
+          command: sdist
+          args: --out dist
+      - name: "Test sdist"
+        run: |
+          rustup default $(cat rust-toolchain)
+          pip install dist/${{ env.PACKAGE_NAME }}-*.tar.gz --force-reinstall
+          ruff --help
+          python -m ruff --help
+      - name: "Upload sdist"
+        uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: dist
+
   macos-x86_64:
     runs-on: macos-latest
     steps:
@@ -24,26 +61,36 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          default: true
-      - name: Build wheels - x86_64
-        uses: messense/maturin-action@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels - x86_64"
+        uses: PyO3/maturin-action@v1
         with:
           target: x86_64
-          args: --release --out dist --sdist
-          maturin-version: "v0.13.0"
-      - name: Install built wheel - x86_64
+          args: --release --out dist
+      - name: "Test wheel - x86_64"
         run: |
           pip install dist/${{ env.PACKAGE_NAME }}-*.whl --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+          ruff --help
+          python -m ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-x86_64-apple-darwin.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/x86_64-apple-darwin/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
+
   macos-universal:
     runs-on: macos-latest
     steps:
@@ -52,109 +99,168 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels - universal2"
+        uses: PyO3/maturin-action@v1
         with:
-          toolchain: stable
-          profile: minimal
-          default: true
-      - name: Build wheels - universal2
-        uses: messense/maturin-action@v1
-        with:
-          args: --release --universal2 --out dist
-          maturin-version: "v0.13.0"
-      - name: Install built wheel - universal2
+          args: --release --target universal2-apple-darwin --out dist
+      - name: "Test wheel - universal2"
         run: |
           pip install dist/${{ env.PACKAGE_NAME }}-*universal2.whl --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+          ruff --help
+          python -m ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-aarch64-apple-darwin.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/aarch64-apple-darwin/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
 
   windows:
     runs-on: windows-latest
     strategy:
       matrix:
-        target: [x64, x86]
+        platform:
+          - target: x86_64-pc-windows-msvc
+            arch: x64
+          - target: i686-pc-windows-msvc
+            arch: x86
+          - target: aarch64-pc-windows-msvc
+            arch: x64
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-          architecture: ${{ matrix.target }}
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
+          architecture: ${{ matrix.platform.arch }}
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
         with:
-          toolchain: stable
-          profile: minimal
-          default: true
-      - name: Build wheels
-        uses: messense/maturin-action@v1
-        with:
-          target: ${{ matrix.target }}
+          target: ${{ matrix.platform.target }}
           args: --release --out dist
-          maturin-version: "v0.13.0"
-      - name: Install built wheel
+      - name: "Test wheel"
+        if: ${{ !startsWith(matrix.platform.target, 'aarch64') }}
         shell: bash
         run: |
           python -m pip install dist/${{ env.PACKAGE_NAME }}-*.whl --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+          ruff --help
+          python -m ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        shell: bash
+        run: |
+          ARCHIVE_FILE=ruff-${{ matrix.platform.target }}.zip
+          7z a $ARCHIVE_FILE ./target/${{ matrix.platform.target }}/release/ruff.exe
+          sha256sum $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.zip
+            *.sha256
 
   linux:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        target: [x86_64, i686]
+        target:
+          - x86_64-unknown-linux-gnu
+          - i686-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - name: Build wheels
-        uses: messense/maturin-action@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.target }}
           manylinux: auto
           args: --release --out dist
-          maturin-version: "v0.13.0"
-      - name: Install built wheel
-        if: matrix.target == 'x86_64'
+      - name: "Test wheel"
+        if: ${{ startsWith(matrix.target, 'x86_64') }}
         run: |
           pip install dist/${{ env.PACKAGE_NAME }}-*.whl --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+          ruff --help
+          python -m ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-${{ matrix.target }}.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/${{ matrix.target }}/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
 
   linux-cross:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        target: [aarch64, armv7, s390x, ppc64le, ppc64]
+        platform:
+          - target: aarch64-unknown-linux-gnu
+            arch: aarch64
+            # see https://github.com/astral-sh/ruff/issues/3791
+            # and https://github.com/gnzlbg/jemallocator/issues/170#issuecomment-1503228963
+            maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
+          - target: armv7-unknown-linux-gnueabihf
+            arch: armv7
+          - target: s390x-unknown-linux-gnu
+            arch: s390x
+          - target: powerpc64le-unknown-linux-gnu
+            arch: ppc64le
+          - target: powerpc64-unknown-linux-gnu
+            arch: ppc64
+
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-      - name: Build wheels
-        uses: messense/maturin-action@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
         with:
-          target: ${{ matrix.target }}
+          target: ${{ matrix.platform.target }}
           manylinux: auto
-          args: --no-default-features --release --out dist
-          maturin-version: "v0.13.0"
-      - uses: uraimo/run-on-arch-action@v2.0.5
-        if: matrix.target != 'ppc64'
-        name: Install built wheel
+          docker-options: ${{ matrix.platform.maturin_docker_options }}
+          args: --release --out dist
+      - uses: uraimo/run-on-arch-action@v2
+        if: matrix.platform.arch != 'ppc64'
+        name: Test wheel
         with:
-          arch: ${{ matrix.target }}
+          arch: ${{ matrix.platform.arch }}
           distro: ubuntu20.04
           githubToken: ${{ github.token }}
           install: |
@@ -163,11 +269,24 @@ jobs:
             pip3 install -U pip
           run: |
             pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+            ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-${{ matrix.platform.target }}.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/${{ matrix.platform.target }}/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
 
   musllinux:
     runs-on: ubuntu-latest
@@ -182,14 +301,15 @@ jobs:
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           architecture: x64
-      - name: Build wheels
-        uses: messense/maturin-action@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.target }}
           manylinux: musllinux_1_2
           args: --release --out dist
-          maturin-version: "v0.13.0"
-      - name: Install built wheel
+      - name: "Test wheel"
         if: matrix.target == 'x86_64-unknown-linux-musl'
         uses: addnab/docker-run-action@v3
         with:
@@ -198,11 +318,25 @@ jobs:
           run: |
             apk add py3-pip
             pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links /io/dist/ --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+            ruff --help
+            python -m ruff --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-${{ matrix.target }}.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/${{ matrix.target }}/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
 
   musllinux-cross:
     runs-on: ubuntu-latest
@@ -211,22 +345,26 @@ jobs:
         platform:
           - target: aarch64-unknown-linux-musl
             arch: aarch64
+            maturin_docker_options: -e JEMALLOC_SYS_WITH_LG_PAGE=16
           - target: armv7-unknown-linux-musleabihf
             arch: armv7
+
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-      - name: Build wheels
-        uses: messense/maturin-action@v1
+      - name: "Prep README.md"
+        run: python scripts/transform_readme.py --target pypi
+      - name: "Build wheels"
+        uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.platform.target }}
           manylinux: musllinux_1_2
           args: --release --out dist
-          maturin-version: "v0.13.0"
-      - uses: uraimo/run-on-arch-action@master
-        name: Install built wheel
+          docker-options: ${{ matrix.platform.maturin_docker_options }}
+      - uses: uraimo/run-on-arch-action@v2
+        name: Test wheel
         with:
           arch: ${{ matrix.platform.arch }}
           distro: alpine_latest
@@ -235,49 +373,58 @@ jobs:
             apk add py3-pip
           run: |
             pip3 install ${{ env.PACKAGE_NAME }} --no-index --find-links dist/ --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
+            ruff check --help
+      - name: "Upload wheels"
+        uses: actions/upload-artifact@v3
         with:
           name: wheels
           path: dist
+      - name: "Archive binary"
+        run: |
+          ARCHIVE_FILE=ruff-${{ matrix.platform.target }}.tar.gz
+          tar czvf $ARCHIVE_FILE -C target/${{ matrix.platform.target }}/release ruff
+          shasum -a 256 $ARCHIVE_FILE > $ARCHIVE_FILE.sha256
+      - name: "Upload binary"
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: |
+            *.tar.gz
+            *.sha256
 
-  pypy:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-        target: [x86_64, aarch64]
-        python-version:
-          - "3.7"
-          - "3.8"
-          - "3.9"
-        exclude:
-          - os: macos-latest
-            target: aarch64
+  validate-tag:
+    name: Validate tag
+    runs-on: ubuntu-latest
+    # If you don't set an input tag, it's a dry run (no uploads).
+    if: ${{ inputs.tag }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
-        with:
-          python-version: pypy${{ matrix.python-version }}
-      - name: Build wheels
-        uses: messense/maturin-action@v1
-        with:
-          maturin-version: "v0.13.0"
-          target: ${{ matrix.target }}
-          manylinux: auto
-          args: --release --out dist -i pypy${{ matrix.python-version }}
-      - name: Install built wheel
-        if: matrix.target == 'x86_64'
+      - name: Check tag consistency
         run: |
-          pip install dist/${{ env.PACKAGE_NAME }}-*.whl --force-reinstall
-      - name: Upload wheels
-        uses: actions/upload-artifact@v2
-        with:
-          name: wheels
-          path: dist
+          version=$(grep "version = " pyproject.toml | sed -e 's/version = "\(.*\)"/\1/g')
+          if [ "${{ inputs.tag }}" != "${version}" ]; then
+            echo "The input tag does not match the version from pyproject.toml:" >&2
+            echo "${{ inputs.tag }}" >&2
+            echo "${version}" >&2
+            exit 1
+          else
+            echo "Releasing ${version}"
+          fi
+      - name: Check SHA consistency
+        if: ${{ inputs.sha }}
+        run: |
+          git_sha=$(git rev-parse HEAD)
+          if [ "${{ inputs.sha }}" != "${git_sha}" ]; then
+            echo "The specified sha does not match the git checkout" >&2
+            echo "${{ inputs.sha }}" >&2
+            echo "${git_sha}" >&2
+            exit 1
+          else
+            echo "Releasing ${git_sha}"
+          fi
 
-  release:
-    name: Release
+  upload-release:
+    name: Upload to PyPI
     runs-on: ubuntu-latest
     needs:
       - macos-universal
@@ -287,17 +434,82 @@ jobs:
       - linux-cross
       - musllinux
       - musllinux-cross
-      - pypy
-    if: "startsWith(github.ref, 'refs/tags/')"
+      - validate-tag
+    # If you don't set an input tag, it's a dry run (no uploads).
+    if: ${{ inputs.tag }}
+    environment:
+      name: release
+    permissions:
+      # For pypi trusted publishing
+      id-token: write
     steps:
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           name: wheels
-      - uses: actions/setup-python@v4
+          path: wheels
       - name: Publish to PyPi
-        env:
-          TWINE_USERNAME: __token__
-          TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true
+          packages-dir: wheels
+          verbose: true
+
+  tag-release:
+    name: Tag release
+    runs-on: ubuntu-latest
+    needs: upload-release
+    # If you don't set an input tag, it's a dry run (no uploads).
+    if: ${{ inputs.tag }}
+    permissions:
+      # For git tag
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: git tag
         run: |
-          pip install --upgrade twine
-          twine upload --skip-existing *
+          git config user.email "hey@astral.sh"
+          git config user.name "Ruff Release CI"
+          git tag -m "v${{ inputs.tag }}" "v${{ inputs.tag }}"
+          # If there is duplicate tag, this will fail. The publish to pypi action will have been a noop (due to skip
+          # existing), so we make a non-destructive exit here
+          git push --tags
+
+  publish-release:
+    name: Publish to GitHub
+    runs-on: ubuntu-latest
+    needs: tag-release
+    # If you don't set an input tag, it's a dry run (no uploads).
+    if: ${{ inputs.tag }}
+    permissions:
+      # For GitHub release publishing
+      contents: write
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: binaries
+          path: binaries
+      - name: "Publish to GitHub"
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          files: binaries/*
+          tag_name: v${{ inputs.tag }}
+
+  # After the release has been published, we update downstream repositories
+  # This is separate because if this fails the release is still fine, we just need to do some manual workflow triggers
+  update-dependents:
+    name: Update dependents
+    runs-on: ubuntu-latest
+    needs: publish-release
+    steps:
+      - name: "Update pre-commit mirror"
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.RUFF_PRE_COMMIT_PAT }}
+          script: |
+            github.rest.actions.createWorkflowDispatch({
+              owner: 'astral-sh',
+              repo: 'ruff-pre-commit',
+              workflow_id: 'main.yml',
+              ref: 'main',
+            })

.gitignore

@@ -1,6 +1,25 @@
-# Local cache
-.ruff_cache
-resources/test/cpython
+# Benchmarking cpython (CONTRIBUTING.md)
+crates/ruff/resources/test/cpython
+# generate_mkdocs.py
+mkdocs.generated.yml
+# check_ecosystem.py
+ruff-old
+github_search*.jsonl
+# update_schemastore.py
+schemastore
+# `maturin develop` and ecosystem_all_check.sh
+.venv*
+# Formatter debugging (crates/ruff_python_formatter/README.md)
+scratch.*
+# Created by `perf` (CONTRIBUTING.md)
+perf.data
+perf.data.old
+# Created by `flamegraph` (CONTRIBUTING.md)
+flamegraph.svg
+# Additional target directories that don't invalidate the main compile cache when changing linker settings,
+# e.g. `CARGO_TARGET_DIR=target-maturin maturin build --release --strip` or
+# `CARGO_TARGET_DIR=target-llvm-lines RUSTFLAGS="-Csymbol-mangling-version=v0" cargo llvm-lines -p ruff --lib`
+/target*
 
 ###
 # Rust.gitignore
@@ -181,3 +200,11 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 .idea/
+.vimspector.json
+
+# Visual Studio Code
+.vscode/
+
+# VIM
+.*.sw?
+.sw?

.markdownlint.yaml

@@ -0,0 +1,15 @@
+# default to true for all rules
+default: true
+
+# MD007/unordered-list-indent
+MD007:
+  indent: 4
+
+# MD033/no-inline-html
+MD033: false
+
+# MD041/first-line-h1
+MD041: false
+
+# MD013/line-length
+MD013: false

.pre-commit-config.yaml

@@ -1,10 +1,66 @@
-repos:
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.40
-    hooks:
-      - id: lint
+fail_fast: true
 
+exclude: |
+  (?x)^(
+    crates/ruff/resources/.*|
+    crates/ruff/src/rules/.*/snapshots/.*|
+    crates/ruff_cli/resources/.*|
+    crates/ruff_python_formatter/resources/.*|
+    crates/ruff_python_formatter/tests/snapshots/.*|
+    crates/ruff_python_resolver/resources/.*|
+    crates/ruff_python_resolver/tests/snapshots/.*
+  )$
+
+repos:
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.10.1
+    rev: v0.12.1
     hooks:
       - id: validate-pyproject
+
+  - repo: https://github.com/executablebooks/mdformat
+    rev: 0.7.16
+    hooks:
+      - id: mdformat
+        additional_dependencies:
+          - mdformat-mkdocs
+          - mdformat-black
+          - black==23.1.0 # Must be the latest version of Black
+
+  - repo: https://github.com/igorshubovych/markdownlint-cli
+    rev: v0.33.0
+    hooks:
+      - id: markdownlint-fix
+
+  - repo: https://github.com/crate-ci/typos
+    rev: v1.14.12
+    hooks:
+      - id: typos
+
+  - repo: local
+    hooks:
+      - id: cargo-fmt
+        name: cargo fmt
+        entry: cargo fmt --
+        language: system
+        types: [ rust ]
+        pass_filenames: false # This makes it a lot faster
+      - id: ruff
+        name: ruff
+        entry: cargo run --bin ruff -- check --no-cache --force-exclude --fix --exit-non-zero-on-fix
+        language: system
+        types_or: [ python, pyi ]
+        require_serial: true
+        exclude: |
+          (?x)^(
+            crates/ruff/resources/.*|
+            crates/ruff_python_formatter/resources/.*
+          )$
+
+  # Black
+  - repo: https://github.com/psf/black
+    rev: 23.1.0
+    hooks:
+      - id: black
+
+ci:
+  skip: [ cargo-fmt, dev-generate-all ]

BREAKING_CHANGES.md

@@ -0,0 +1,277 @@
+# Breaking Changes
+
+## 0.0.277
+
+### `.ipynb_checkpoints`, `.pyenv`, `.pytest_cache`, and `.vscode` are now excluded by default ([#5513](https://github.com/astral-sh/ruff/pull/5513))
+
+Ruff maintains a list of default exclusions, which now consists of the following patterns:
+
+- `.bzr`
+- `.direnv`
+- `.eggs`
+- `.git`
+- `.git-rewrite`
+- `.hg`
+- `.ipynb_checkpoints`
+- `.mypy_cache`
+- `.nox`
+- `.pants.d`
+- `.pyenv`
+- `.pytest_cache`
+- `.pytype`
+- `.ruff_cache`
+- `.svn`
+- `.tox`
+- `.venv`
+- `.vscode`
+- `__pypackages__`
+- `_build`
+- `buck-out`
+- `build`
+- `dist`
+- `node_modules`
+- `venv`
+
+Previously, the `.ipynb_checkpoints`, `.pyenv`, `.pytest_cache`, and `.vscode` directories were not
+excluded by default. This change brings Ruff's default exclusions in line with other tools like
+Black.
+
+## 0.0.276
+
+### The `keep-runtime-typing` setting has been reinstated ([#5470](https://github.com/astral-sh/ruff/pull/5470))
+
+The `keep-runtime-typing` setting has been reinstated with revised semantics. This setting was
+removed in [#4427](https://github.com/astral-sh/ruff/pull/4427), as it was equivalent to ignoring
+the `UP006` and `UP007` rules via Ruff's standard `ignore` mechanism.
+
+Taking `UP006` (rewrite `List[int]` to `list[int]`) as an example, the setting now behaves as
+follows:
+
+- On Python 3.7 and Python 3.8, setting `keep-runtime-typing = true` will cause Ruff to ignore
+    `UP006` violations, even if `from __future__ import annotations` is present in the file.
+    While such annotations are valid in Python 3.7 and Python 3.8 when combined with
+    `from __future__ import annotations`, they aren't supported by libraries like Pydantic and
+    FastAPI, which rely on runtime type checking.
+- On Python 3.9 and above, the setting has no effect, as `list[int]` is a valid type annotation,
+    and libraries like Pydantic and FastAPI support it without issue.
+
+In short: `keep-runtime-typing` can be used to ensure that Ruff doesn't introduce type annotations
+that are not supported at runtime by the current Python version, which are unsupported by libraries
+like Pydantic and FastAPI.
+
+Note that this is not a breaking change, but is included here to complement the previous removal
+of `keep-runtime-typing`.
+
+## 0.0.268
+
+### The `keep-runtime-typing` setting has been removed ([#4427](https://github.com/astral-sh/ruff/pull/4427))
+
+Enabling the `keep-runtime-typing` option, located under the `pyupgrade` section, is equivalent
+to ignoring the `UP006` and `UP007` rules via Ruff's standard `ignore` mechanism. As there's no
+need for a dedicated setting to disable these rules, the `keep-runtime-typing` option has been
+removed.
+
+## 0.0.267
+
+### `update-check` is no longer a valid configuration option ([#4313](https://github.com/astral-sh/ruff/pull/4313))
+
+The `update-check` functionality was deprecated in [#2530](https://github.com/astral-sh/ruff/pull/2530),
+in that the behavior itself was removed, and Ruff was changed to warn when that option was enabled.
+
+Now, Ruff will throw an error when `update-check` is provided via a configuration file (e.g.,
+`update-check = false`) or through the command-line, since it has no effect. Users should remove
+this option from their configuration.
+
+## 0.0.265
+
+### `--fix-only` now exits with a zero exit code, unless `--exit-non-zero-on-fix` is specified ([#4146](https://github.com/astral-sh/ruff/pull/4146))
+
+Previously, `--fix-only` would exit with a non-zero exit code if any fixes were applied. This
+behavior was inconsistent with `--fix`, and further, meant that `--exit-non-zero-on-fix` was
+effectively ignored when `--fix-only` was specified.
+
+Now, `--fix-only` will exit with a zero exit code, unless `--exit-non-zero-on-fix` is specified,
+in which case it will exit with a non-zero exit code if any fixes were applied.
+
+## 0.0.260
+
+### Fixes are now represented as a list of edits ([#3709](https://github.com/astral-sh/ruff/pull/3709))
+
+Previously, Ruff represented each fix as a single edit, which prohibited Ruff from automatically
+fixing violations that required multiple edits across a file. As such, Ruff now represents each
+fix as a list of edits.
+
+This primarily affects the JSON API. Ruff's JSON representation used to represent the `fix` field as
+a single edit, like so:
+
+```json
+{
+    "message": "Remove unused import: `sys`",
+    "content": "",
+    "location": {"row": 1, "column": 0},
+    "end_location": {"row": 2, "column": 0}
+}
+```
+
+The updated representation instead includes a list of edits:
+
+```json
+{
+    "message": "Remove unused import: `sys`",
+    "edits": [
+        {
+            "content": "",
+            "location": {"row": 1, "column": 0},
+            "end_location": {"row": 2, "column": 0},
+        }
+    ]
+}
+```
+
+## 0.0.246
+
+### `multiple-statements-on-one-line-def` (`E704`) was removed ([#2773](https://github.com/astral-sh/ruff/pull/2773))
+
+This rule was introduced in v0.0.245. However, it turns out that pycodestyle and Flake8 ignore this
+rule by default, as it is not part of PEP 8. As such, we've removed it from Ruff.
+
+## 0.0.245
+
+### Ruff's public `check` method was removed ([#2709](https://github.com/astral-sh/ruff/pull/2709))
+
+Previously, Ruff exposed a `check` method as a public Rust API. This method was used by few,
+if any clients, and was not well documented or supported. As such, it has been removed, with
+the intention of adding a stable public API in the future.
+
+## 0.0.238
+
+### `select`, `extend-select`, `ignore`, and `extend-ignore` have new semantics ([#2312](https://github.com/astral-sh/ruff/pull/2312))
+
+Previously, the interplay between `select` and its related options could lead to unexpected
+behavior. For example, `ruff --select E501 --ignore ALL` and `ruff --select E501 --extend-ignore ALL`
+behaved differently. (See [#2312](https://github.com/astral-sh/ruff/pull/2312) for more
+examples.)
+
+When Ruff determines the enabled rule set, it has to reconcile `select` and `ignore` from a variety
+of sources, including the current `pyproject.toml`, any inherited `pyproject.toml` files, and the
+CLI.
+
+The new semantics are such that Ruff uses the "highest-priority" `select` as the basis for the rule
+set, and then applies any `extend-select`, `ignore`, and `extend-ignore` adjustments. CLI options
+are given higher priority than `pyproject.toml` options, and the current `pyproject.toml` file is
+given higher priority than any inherited `pyproject.toml` files.
+
+`extend-select` and `extend-ignore` are no longer given "top priority"; instead, they merely append
+to the `select` and `ignore` lists, as in Flake8.
+
+This change is largely backwards compatible -- most users should experience no change in behavior.
+However, as an example of a breaking change, consider the following:
+
+```toml
+[tool.ruff]
+ignore = ["F401"]
+```
+
+Running `ruff --select F` would previously have enabled all `F` rules, apart from `F401`. Now, it
+will enable all `F` rules, including `F401`, as the command line's `--select` resets the resolution.
+
+### `remove-six-compat` (`UP016`) has been removed ([#2332](https://github.com/astral-sh/ruff/pull/2332))
+
+The `remove-six-compat` rule has been removed. This rule was only useful for one-time Python 2-to-3
+upgrades.
+
+## 0.0.237
+
+### `--explain`, `--clean`, and `--generate-shell-completion` are now subcommands ([#2190](https://github.com/astral-sh/ruff/pull/2190))
+
+`--explain`, `--clean`, and `--generate-shell-completion` are now implemented as subcommands:
+
+```console
+ruff .         # Still works! And will always work.
+ruff check .   # New! Also works.
+
+ruff --explain E402   # Still works.
+ruff rule E402        # New! Also works. (And preferred.)
+
+# Oops! The command has to come first.
+ruff --format json --explain E402   # No longer works.
+ruff --explain E402 --format json   # Still works!
+ruff rule E402   --format json      # Works! (And preferred.)
+```
+
+This change is largely backwards compatible -- most users should experience
+no change in behavior. However, please note the following exceptions:
+
+- Subcommands will now fail when invoked with unsupported arguments, instead
+    of silently ignoring them. For example, the following will now fail:
+
+    ```console
+    ruff --clean --respect-gitignore
+    ```
+
+    (the `clean` command doesn't support `--respect-gitignore`.)
+
+- The semantics of `ruff <arg>` have changed slightly when `<arg>` is a valid subcommand.
+    For example, prior to this release, running `ruff rule` would run `ruff` over a file or
+    directory called `rule`. Now, `ruff rule` would invoke the `rule` subcommand. This should
+    only impact projects with files or directories named `rule`, `check`, `explain`, `clean`,
+    or `generate-shell-completion`.
+
+- Scripts that invoke ruff should supply `--` before any positional arguments.
+    (The semantics of `ruff -- <arg>` have not changed.)
+
+- `--explain` previously treated `--format grouped` as a synonym for `--format text`.
+    This is no longer supported; instead, use `--format text`.
+
+## 0.0.226
+
+### `misplaced-comparison-constant` (`PLC2201`) was deprecated in favor of `SIM300` ([#1980](https://github.com/astral-sh/ruff/pull/1980))
+
+These two rules contain (nearly) identical logic. To deduplicate the rule set, we've upgraded
+`SIM300` to handle a few more cases, and deprecated `PLC2201` in favor of `SIM300`.
+
+## 0.0.225
+
+### `@functools.cache` rewrites have been moved to a standalone rule (`UP033`) ([#1938](https://github.com/astral-sh/ruff/pull/1938))
+
+Previously, `UP011` handled both `@functools.lru_cache()`-to-`@functools.lru_cache` conversions,
+_and_ `@functools.lru_cache(maxsize=None)`-to-`@functools.cache` conversions. The latter has been
+moved out to its own rule (`UP033`). As such, some `# noqa: UP011` comments may need to be updated
+to reflect the change in rule code.
+
+## 0.0.222
+
+### `--max-complexity` has been removed from the CLI ([#1877](https://github.com/astral-sh/ruff/pull/1877))
+
+The McCabe plugin's `--max-complexity` setting has been removed from the CLI, for consistency with
+the treatment of other, similar settings.
+
+To set the maximum complexity, use the `max-complexity` property in your `pyproject.toml` file,
+like so:
+
+```toml
+[tool.ruff.mccabe]
+max-complexity = 10
+```
+
+## 0.0.181
+
+### Files excluded by `.gitignore` are now ignored ([#1234](https://github.com/astral-sh/ruff/pull/1234))
+
+Ruff will now avoid checking files that are excluded by `.ignore`, `.gitignore`,
+`.git/info/exclude`, and global `gitignore` files. This behavior is powered by the [`ignore`](https://docs.rs/ignore/latest/ignore/struct.WalkBuilder.html#ignore-rules)
+crate, and is applied in addition to Ruff's built-in `exclude` system.
+
+To disable this behavior, set `respect-gitignore = false` in your `pyproject.toml` file.
+
+Note that hidden files (i.e., files and directories prefixed with a `.`) are _not_ ignored by
+default.
+
+## 0.0.178
+
+### Configuration files are now resolved hierarchically ([#1190](https://github.com/astral-sh/ruff/pull/1190))
+
+`pyproject.toml` files are now resolved hierarchically, such that for each Python file, we find
+the first `pyproject.toml` file in its path, and use that to determine its lint settings.
+
+See the [documentation](https://beta.ruff.rs/docs/configuration/#python-file-discovery) for more.

CODE_OF_CONDUCT.md

@@ -1,5 +1,17 @@
 # Contributor Covenant Code of Conduct
 
+- [Our Pledge](#our-pledge)
+- [Our Standards](#our-standards)
+- [Enforcement Responsibilities](#enforcement-responsibilities)
+- [Scope](#scope)
+- [Enforcement](#enforcement)
+- [Enforcement Guidelines](#enforcement-guidelines)
+    - [1. Correction](#1-correction)
+    - [2. Warning](#2-warning)
+    - [3. Temporary Ban](#3-temporary-ban)
+    - [4. Permanent Ban](#4-permanent-ban)
+- [Attribution](#attribution)
+
 ## Our Pledge
 
 We as members, contributors, and leaders pledge to make participation in our
@@ -17,24 +29,24 @@ diverse, inclusive, and healthy community.
 Examples of behavior that contributes to a positive environment for our
 community include:
 
-* Demonstrating empathy and kindness toward other people
-* Being respectful of differing opinions, viewpoints, and experiences
-* Giving and gracefully accepting constructive feedback
-* Accepting responsibility and apologizing to those affected by our mistakes,
-  and learning from the experience
-* Focusing on what is best not just for us as individuals, but for the
-  overall community
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes,
+    and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the
+    overall community
 
 Examples of unacceptable behavior include:
 
-* The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-* Trolling, insulting or derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
+- The use of sexualized language or imagery, and sexual attention or
+    advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email
+    address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+    professional setting
 
 ## Enforcement Responsibilities
 
@@ -106,7 +118,7 @@ Violating these terms may lead to a permanent ban.
 ### 4. Permanent Ban
 
 **Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior,  harassment of an
+standards, including sustained inappropriate behavior, harassment of an
 individual, or aggression toward or disparagement of classes of individuals.
 
 **Consequence**: A permanent ban from any sort of public interaction within
@@ -115,14 +127,12 @@ the community.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+version 2.0, available [here](https://www.contributor-covenant.org/version/2/0/code_of_conduct.html).
 
 Community Impact Guidelines were inspired by [Mozilla's code of conduct
 enforcement ladder](https://github.com/mozilla/diversity).
 
-[homepage]: https://www.contributor-covenant.org
+For answers to common questions about this code of conduct, see the [FAQ](https://www.contributor-covenant.org/faq).
+Translations are available [here](https://www.contributor-covenant.org/translations).
 
-For answers to common questions about this code of conduct, see the FAQ at
-https://www.contributor-covenant.org/faq. Translations are available at
-https://www.contributor-covenant.org/translations.
+[homepage]: https://www.contributor-covenant.org

CONTRIBUTING.md

@@ -1,17 +1,60 @@
-# Contributing to ruff
+# Contributing to Ruff
 
-Welcome! We're happy to have you here. Thank you in advance for your contribution to ruff.
+Welcome! We're happy to have you here. Thank you in advance for your contribution to Ruff.
 
-## The basics
+- [The Basics](#the-basics)
+    - [Prerequisites](#prerequisites)
+    - [Development](#development)
+    - [Project Structure](#project-structure)
+    - [Example: Adding a new lint rule](#example-adding-a-new-lint-rule)
+        - [Rule naming convention](#rule-naming-convention)
+        - [Rule testing: fixtures and snapshots](#rule-testing-fixtures-and-snapshots)
+    - [Example: Adding a new configuration option](#example-adding-a-new-configuration-option)
+- [MkDocs](#mkdocs)
+- [Release Process](#release-process)
+    - [Creating a new release](#creating-a-new-release)
+- [Ecosystem CI](#ecosystem-ci)
+- [Benchmarking and Profiling](#benchmarking-and-profiling)
+    - [CPython Benchmark](#cpython-benchmark)
+    - [Microbenchmarks](#microbenchmarks)
+        - [Benchmark-driven Development](#benchmark-driven-development)
+        - [PR Summary](#pr-summary)
+        - [Tips](#tips)
+    - [Profiling Projects](#profiling-projects)
+        - [Linux](#linux)
+        - [Mac](#mac)
+- [`cargo dev`](#cargo-dev)
+- [Subsystems](#subsystems)
+    - [Compilation Pipeline](#compilation-pipeline)
 
-ruff welcomes contributions in the form of Pull Requests. For small changes (e.g., bug fixes), feel
-free to submit a PR. For larger changes (e.g., new lint rules, new functionality, new configuration
-options), consider submitting an [Issue](https://github.com/charliermarsh/ruff/issues) outlining
-your proposed change.
+## The Basics
+
+Ruff welcomes contributions in the form of Pull Requests.
+
+For small changes (e.g., bug fixes), feel free to submit a PR.
+
+For larger changes (e.g., new lint rules, new functionality, new configuration options), consider
+creating an [**issue**](https://github.com/astral-sh/ruff/issues) outlining your proposed change.
+You can also join us on [**Discord**](https://discord.gg/c9MhzV8aU5) to discuss your idea with the
+community. We've labeled [beginner-friendly tasks](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
+in the issue tracker, along with [bugs](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3Abug)
+and [improvements](https://github.com/astral-sh/ruff/issues?q=is%3Aissue+is%3Aopen+label%3Aaccepted)
+that are ready for contributions.
+
+If you're looking for a place to start, we recommend implementing a new lint rule (see:
+[_Adding a new lint rule_](#example-adding-a-new-lint-rule), which will allow you to learn from and
+pattern-match against the examples in the existing codebase. Many lint rules are inspired by
+existing Python plugins, which can be used as a reference implementation.
+
+As a concrete example: consider taking on one of the rules from the [`flake8-pyi`](https://github.com/astral-sh/ruff/issues/848)
+plugin, and looking to the originating [Python source](https://github.com/PyCQA/flake8-pyi) for
+guidance.
+
+If you have suggestions on how we might improve the contributing documentation, [let us know](https://github.com/astral-sh/ruff/discussions/5693)!
 
 ### Prerequisites
 
-ruff is written in Rust (1.63.0). You'll need to install the
+Ruff is written in Rust. You'll need to install the
 [Rust toolchain](https://www.rust-lang.org/tools/install) for development.
 
 You'll also need [Insta](https://insta.rs/docs/) to update snapshot tests:
@@ -20,92 +63,694 @@ You'll also need [Insta](https://insta.rs/docs/) to update snapshot tests:
 cargo install cargo-insta
 ```
 
-### Development
-
-After cloning the repository, run ruff locally with:
+and pre-commit to run some validation checks:
 
 ```shell
-cargo run resources/test/fixtures --no-cache
+pipx install pre-commit  # or `pip install pre-commit` if you have a virtualenv
 ```
 
-Prior to opening a pull request, ensure that your code has been auto-formatted, and that it passes
-both the lint and test validation checks:
+### Development
+
+After cloning the repository, run Ruff locally with:
 
 ```shell
-cargo fmt     # Auto-formatting...
-cargo clippy  # Linting...
-cargo test    # Testing...
+cargo run -p ruff_cli -- check /path/to/file.py --no-cache
+```
+
+Prior to opening a pull request, ensure that your code has been auto-formatted,
+and that it passes both the lint and test validation checks:
+
+```shell
+cargo clippy --workspace --all-targets --all-features -- -D warnings  # Rust linting
+RUFF_UPDATE_SCHEMA=1 cargo test  # Rust testing and updating ruff.schema.json
+pre-commit run --all-files --show-diff-on-failure  # Rust and Python formatting, Markdown and Python linting, etc.
 ```
 
 These checks will run on GitHub Actions when you open your Pull Request, but running them locally
 will save you time and expedite the merge process.
 
+Note that many code changes also require updating the snapshot tests, which is done interactively
+after running `cargo test` like so:
+
+```shell
+cargo insta review
+```
+
 Your Pull Request will be reviewed by a maintainer, which may involve a few rounds of iteration
 prior to merging.
 
+### Project Structure
+
+Ruff is structured as a monorepo with a [flat crate structure](https://matklad.github.io/2021/08/22/large-rust-workspaces.html),
+such that all crates are contained in a flat `crates` directory.
+
+The vast majority of the code, including all lint rules, lives in the `ruff` crate (located at
+`crates/ruff`). As a contributor, that's the crate that'll be most relevant to you.
+
+At time of writing, the repository includes the following crates:
+
+- `crates/ruff`: library crate containing all lint rules and the core logic for running them.
+    If you're working on a rule, this is the crate for you.
+- `crates/ruff_benchmark`: binary crate for running micro-benchmarks.
+- `crates/ruff_cache`: library crate for caching lint results.
+- `crates/ruff_cli`: binary crate containing Ruff's command-line interface.
+- `crates/ruff_dev`: binary crate containing utilities used in the development of Ruff itself (e.g.,
+    `cargo dev generate-all`), see the [`cargo dev`](#cargo-dev) section below.
+- `crates/ruff_diagnostics`: library crate for the rule-independent abstractions in the lint
+    diagnostics APIs.
+- `crates/ruff_formatter`: library crate for language agnostic code formatting logic based on an
+    intermediate representation. The backend for `ruff_python_formatter`.
+- `crates/ruff_index`: library crate inspired by `rustc_index`.
+- `crates/ruff_macros`: proc macro crate containing macros used by Ruff.
+- `crates/ruff_python_ast`: library crate containing Python-specific AST types and utilities. Note
+    that the AST schema itself is defined in the
+    [rustpython-ast](https://github.com/astral-sh/RustPython-Parser) crate.
+- `crates/ruff_python_formatter`: library crate implementing the Python formatter. Emits an
+    intermediate representation for each node, which `ruff_formatter` prints based on the configured
+    line length.
+- `crates/ruff_python_semantic`: library crate containing Python-specific semantic analysis logic,
+    including Ruff's semantic model. Used to resolve queries like "What import does this variable
+    refer to?"
+- `crates/ruff_python_stdlib`: library crate containing Python-specific standard library data, e.g.
+    the names of all built-in exceptions and which standard library types are immutable.
+- `crates/ruff_python_trivia`: library crate containing Python-specific trivia utilities (e.g.,
+    for analyzing indentation, newlines, etc.).
+- `crates/ruff_rustpython`: library crate containing `RustPython`-specific utilities.
+- `crates/ruff_textwrap`: library crate to indent and dedent Python source code.
+- `crates/ruff_wasm`: library crate for exposing Ruff as a WebAssembly module. Powers the
+    [Ruff Playground](https://play.ruff.rs/).
+
 ### Example: Adding a new lint rule
 
-There are three phases to adding a new lint rule:
+At a high level, the steps involved in adding a new lint rule are as follows:
 
-1. Define the rule in `src/checks.rs`.
-2. Define the _logic_ for triggering the rule in `src/check_ast.rs` (for AST-based checks)
-   or `src/check_lines.rs` (for text-based checks).
-3. Add a test fixture.
+1. Determine a name for the new rule as per our [rule naming convention](#rule-naming-convention)
+    (e.g., `AssertFalse`, as in, "allow `assert False`").
 
-To define the rule, open up `src/checks.rs`. You'll need to define both a `CheckCode` and
-`CheckKind`. As an example, you can grep for `E402` and `ModuleImportNotAtTopOfFile`, and follow the
-pattern implemented therein.
+1. Create a file for your rule (e.g., `crates/ruff/src/rules/flake8_bugbear/rules/assert_false.rs`).
 
-To trigger the rule, you'll likely want to augment the logic in `src/check_ast.rs`, which defines
-the Python AST visitor, responsible for iterating over the abstract syntax tree and collecting
-lint-rule violations as it goes. Grep for the `Check::new` invocations to understand how other,
-similar rules are implemented.
+1. In that file, define a violation struct (e.g., `pub struct AssertFalse`). You can grep for
+    `#[violation]` to see examples.
 
-To add a test fixture, create a file under `resources/test/fixtures`, named to match the `CheckCode`
-you defined earlier (e.g., `E402.py`). This file should contain a variety of violations and
-non-violations designed to evaluate and demonstrate the behavior of your lint rule. Run ruff locally
-with (e.g.) `cargo run resources/test/fixtures/E402.py`. Once you're satisfied with the output,
-codify the behavior as a snapshot test by adding a new function to the `mod tests` section of
-`src/linter.rs`, like so:
+1. In that file, define a function that adds the violation to the diagnostic list as appropriate
+    (e.g., `pub(crate) fn assert_false`) based on whatever inputs are required for the rule (e.g.,
+    an `ast::StmtAssert` node).
 
-```rust
-#[test]
-fn e402() -> Result<()> {
-    let mut checks = check_path(
-        Path::new("./resources/test/fixtures/E402.py"),
-        &settings::Settings::for_rule(CheckCode::E402),
-        &fixer::Mode::Generate,
-    )?;
-    checks.sort_by_key(|check| check.location);
-    insta::assert_yaml_snapshot!(checks);
-    Ok(())
-}
-```
+1. Define the logic for triggering the violation in `crates/ruff/src/checkers/ast/mod.rs` (for
+    AST-based checks), `crates/ruff/src/checkers/tokens.rs` (for token-based checks),
+    `crates/ruff/src/checkers/lines.rs` (for text-based checks), or
+    `crates/ruff/src/checkers/filesystem.rs` (for filesystem-based checks).
 
-Then, run `cargo test`. Your test will fail, but you'll be prompted to follow-up with
-`cargo insta review`. Accept the generated snapshot, then commit the snapshot file alongside the
-rest of your changes.
+1. Map the violation struct to a rule code in `crates/ruff/src/codes.rs` (e.g., `B011`).
+
+1. Add proper [testing](#rule-testing-fixtures-and-snapshots) for your rule.
+
+1. Update the generated files (documentation and generated code).
+
+To trigger the violation, you'll likely want to augment the logic in `crates/ruff/src/checkers/ast.rs`
+to call your new function at the appropriate time and with the appropriate inputs. The `Checker`
+defined therein is a Python AST visitor, which iterates over the AST, building up a semantic model,
+and calling out to lint rule analyzer functions as it goes.
+
+If you need to inspect the AST, you can run `cargo dev print-ast` with a Python file. Grep
+for the `Diagnostic::new` invocations to understand how other, similar rules are implemented.
+
+Once you're satisfied with your code, add tests for your rule. See [rule testing](#rule-testing-fixtures-and-snapshots)
+for more details.
+
+Finally, regenerate the documentation and other generated assets (like our JSON Schema) with:
+`cargo dev generate-all`.
+
+#### Rule naming convention
+
+Like Clippy, Ruff's rule names should make grammatical and logical sense when read as "allow
+${rule}" or "allow ${rule} items", as in the context of suppression comments.
+
+For example, `AssertFalse` fits this convention: it flags `assert False` statements, and so a
+suppression comment would be framed as "allow `assert False`".
+
+As such, rule names should...
+
+- Highlight the pattern that is being linted against, rather than the preferred alternative.
+    For example, `AssertFalse` guards against `assert False` statements.
+
+- _Not_ contain instructions on how to fix the violation, which instead belong in the rule
+    documentation and the `autofix_title`.
+
+- _Not_ contain a redundant prefix, like `Disallow` or `Banned`, which are already implied by the
+    convention.
+
+When re-implementing rules from other linters, we prioritize adhering to this convention over
+preserving the original rule name.
+
+#### Rule testing: fixtures and snapshots
+
+To test rules, Ruff uses snapshots of Ruff's output for a given file (fixture). Generally, there
+will be one file per rule (e.g., `E402.py`), and each file will contain all necessary examples of
+both violations and non-violations. `cargo insta review` will generate a snapshot file containing
+Ruff's output for each fixture, which you can then commit alongside your changes.
+
+Once you've completed the code for the rule itself, you can define tests with the following steps:
+
+1. Add a Python file to `crates/ruff/resources/test/fixtures/[linter]` that contains the code you
+    want to test. The file name should match the rule name (e.g., `E402.py`), and it should include
+    examples of both violations and non-violations.
+
+1. Run Ruff locally against your file and verify the output is as expected. Once you're satisfied
+    with the output (you see the violations you expect, and no others), proceed to the next step.
+    For example, if you're adding a new rule named `E402`, you would run:
+
+    ```shell
+    cargo run -p ruff_cli -- check crates/ruff/resources/test/fixtures/pycodestyle/E402.py --no-cache
+    ```
+
+1. Add the test to the relevant `crates/ruff/src/rules/[linter]/mod.rs` file. If you're contributing
+    a rule to a pre-existing set, you should be able to find a similar example to pattern-match
+    against. If you're adding a new linter, you'll need to create a new `mod.rs` file (see,
+    e.g., `crates/ruff/src/rules/flake8_bugbear/mod.rs`)
+
+1. Run `cargo test`. Your test will fail, but you'll be prompted to follow-up
+    with `cargo insta review`. Run `cargo insta review`, review and accept the generated snapshot,
+    then commit the snapshot file alongside the rest of your changes.
+
+1. Run `cargo test` again to ensure that your test passes.
 
 ### Example: Adding a new configuration option
 
-ruff's user-facing settings live in two places: first, the command-line options defined with
-[clap](https://docs.rs/clap/latest/clap/) via the `Cli` struct in `src/main.rs`; and second, the
-`Config` struct defined `src/pyproject.rs`, which is responsible for extracting user-defined
-settings from a `pyproject.toml` file.
+Ruff's user-facing settings live in a few different places.
 
-Ultimately, these two sources of configuration are merged into the `Settings` struct defined
-in `src/settings.rs`, which is then threaded through the codebase.
+First, the command-line options are defined via the `Cli` struct in `crates/ruff/src/cli.rs`.
 
-To add a new configuration option, you'll likely want to _both_ add a CLI option to `src/main.rs`
-_and_ a `pyproject.toml` parameter to `src/pyproject.rs`. If you want to pattern-match against an
-existing example, grep for `dummy_variable_rgx`, which defines a regular expression to match against
-acceptable unused variables (e.g., `_`).
+Second, the `pyproject.toml` options are defined in `crates/ruff/src/settings/options.rs` (via the
+`Options` struct), `crates/ruff/src/settings/configuration.rs` (via the `Configuration` struct), and
+`crates/ruff/src/settings/mod.rs` (via the `Settings` struct). These represent, respectively: the
+schema used to parse the `pyproject.toml` file; an internal, intermediate representation; and the
+final, internal representation used to power Ruff.
 
-## Release process
+To add a new configuration option, you'll likely want to modify these latter few files (along with
+`cli.rs`, if appropriate). If you want to pattern-match against an existing example, grep for
+`dummy_variable_rgx`, which defines a regular expression to match against acceptable unused
+variables (e.g., `_`).
 
-As of now, ruff has an ad hoc release process: releases are cut with high frequency via GitHub
+Note that plugin-specific configuration options are defined in their own modules (e.g.,
+`crates/ruff/src/flake8_unused_arguments/settings.rs`).
+
+You may also want to add the new configuration option to the `flake8-to-ruff` tool, which is
+responsible for converting `flake8` configuration files to Ruff's TOML format. This logic
+lives in `crates/ruff/src/flake8_to_ruff/converter.rs`.
+
+Finally, regenerate the documentation and generated code with `cargo dev generate-all`.
+
+## MkDocs
+
+To preview any changes to the documentation locally:
+
+1. Install the [Rust toolchain](https://www.rust-lang.org/tools/install).
+
+1. Install MkDocs and Material for MkDocs with:
+
+    ```shell
+    pip install -r docs/requirements.txt
+    ```
+
+1. Generate the MkDocs site with:
+
+    ```shell
+    python scripts/generate_mkdocs.py
+    ```
+
+1. Run the development server with:
+
+    ```shell
+    # For contributors.
+    mkdocs serve -f mkdocs.generated.yml
+
+    # For members of the Astral org, which has access to MkDocs Insiders via sponsorship.
+    mkdocs serve -f mkdocs.insiders.yml
+    ```
+
+The documentation should then be available locally at
+[http://127.0.0.1:8000/docs/](http://127.0.0.1:8000/docs/).
+
+## Release Process
+
+As of now, Ruff has an ad hoc release process: releases are cut with high frequency via GitHub
 Actions, which automatically generates the appropriate wheels across architectures and publishes
 them to [PyPI](https://pypi.org/project/ruff/).
 
-ruff follows the [semver](https://semver.org/) versioning standard. However, as pre-1.0 software,
+Ruff follows the [semver](https://semver.org/) versioning standard. However, as pre-1.0 software,
 even patch releases may contain [non-backwards-compatible changes](https://semver.org/#spec-item-4).
+
+### Creating a new release
+
+1. Update the version with `rg 0.0.269 --files-with-matches | xargs sed -i 's/0.0.269/0.0.270/g'`
+1. Update `BREAKING_CHANGES.md`
+1. Create a PR with the version and `BREAKING_CHANGES.md` updated
+1. Merge the PR
+1. Run the release workflow with the version number (without starting `v`) as input. Make sure
+    main has your merged PR as last commit
+1. The release workflow will do the following:
+    1. Build all the assets. If this fails (even though we tested in step 4), we haven’t tagged or
+        uploaded anything, you can restart after pushing a fix.
+    1. Upload to PyPI.
+    1. Create and push the Git tag (as extracted from `pyproject.toml`). We create the Git tag only
+        after building the wheels and uploading to PyPI, since we can't delete or modify the tag ([#4468](https://github.com/charliermarsh/ruff/issues/4468)).
+    1. Attach artifacts to draft GitHub release
+    1. Trigger downstream repositories. This can fail non-catastrophically, as we can run any
+        downstream jobs manually if needed.
+1. Create release notes in GitHub UI and promote from draft.
+1. If needed, [update the schemastore](https://github.com/charliermarsh/ruff/blob/main/scripts/update_schemastore.py)
+1. If needed, update the `ruff-lsp` and `ruff-vscode` repositories.
+
+## Ecosystem CI
+
+GitHub Actions will run your changes against a number of real-world projects from GitHub and
+report on any diagnostic differences. You can also run those checks locally via:
+
+```shell
+python scripts/check_ecosystem.py path/to/your/ruff path/to/older/ruff
+```
+
+You can also run the Ecosystem CI check in a Docker container across a larger set of projects by
+downloading the [`known-github-tomls.json`](https://github.com/akx/ruff-usage-aggregate/blob/master/data/known-github-tomls.jsonl)
+as `github_search.jsonl` and following the instructions in [scripts/Dockerfile.ecosystem](https://github.com/astral-sh/ruff/blob/main/scripts/Dockerfile.ecosystem).
+Note that this check will take a while to run.
+
+## Benchmarking and Profiling
+
+We have several ways of benchmarking and profiling Ruff:
+
+- Our main performance benchmark comparing Ruff with other tools on the CPython codebase
+- Microbenchmarks which the linter or the formatter on individual files. There run on pull requests.
+- Profiling the linter on either the microbenchmarks or entire projects
+
+### CPython Benchmark
+
+First, clone [CPython](https://github.com/python/cpython). It's a large and diverse Python codebase,
+which makes it a good target for benchmarking.
+
+```shell
+git clone --branch 3.10 https://github.com/python/cpython.git crates/ruff/resources/test/cpython
+```
+
+To benchmark the release build:
+
+```shell
+cargo build --release && hyperfine --warmup 10 \
+  "./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache -e" \
+  "./target/release/ruff ./crates/ruff/resources/test/cpython/ -e"
+
+Benchmark 1: ./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache
+  Time (mean ± σ):     293.8 ms ±   3.2 ms    [User: 2384.6 ms, System: 90.3 ms]
+  Range (min … max):   289.9 ms … 301.6 ms    10 runs
+
+Benchmark 2: ./target/release/ruff ./crates/ruff/resources/test/cpython/
+  Time (mean ± σ):      48.0 ms ±   3.1 ms    [User: 65.2 ms, System: 124.7 ms]
+  Range (min … max):    45.0 ms …  66.7 ms    62 runs
+
+Summary
+  './target/release/ruff ./crates/ruff/resources/test/cpython/' ran
+    6.12 ± 0.41 times faster than './target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache'
+```
+
+To benchmark against the ecosystem's existing tools:
+
+```shell
+hyperfine --ignore-failure --warmup 5 \
+  "./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache" \
+  "pyflakes crates/ruff/resources/test/cpython" \
+  "autoflake --recursive --expand-star-imports --remove-all-unused-imports --remove-unused-variables --remove-duplicate-keys resources/test/cpython" \
+  "pycodestyle crates/ruff/resources/test/cpython" \
+  "flake8 crates/ruff/resources/test/cpython"
+
+Benchmark 1: ./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache
+  Time (mean ± σ):     294.3 ms ±   3.3 ms    [User: 2467.5 ms, System: 89.6 ms]
+  Range (min … max):   291.1 ms … 302.8 ms    10 runs
+
+  Warning: Ignoring non-zero exit code.
+
+Benchmark 2: pyflakes crates/ruff/resources/test/cpython
+  Time (mean ± σ):     15.786 s ±  0.143 s    [User: 15.560 s, System: 0.214 s]
+  Range (min … max):   15.640 s … 16.157 s    10 runs
+
+  Warning: Ignoring non-zero exit code.
+
+Benchmark 3: autoflake --recursive --expand-star-imports --remove-all-unused-imports --remove-unused-variables --remove-duplicate-keys resources/test/cpython
+  Time (mean ± σ):      6.175 s ±  0.169 s    [User: 54.102 s, System: 1.057 s]
+  Range (min … max):    5.950 s …  6.391 s    10 runs
+
+Benchmark 4: pycodestyle crates/ruff/resources/test/cpython
+  Time (mean ± σ):     46.921 s ±  0.508 s    [User: 46.699 s, System: 0.202 s]
+  Range (min … max):   46.171 s … 47.863 s    10 runs
+
+  Warning: Ignoring non-zero exit code.
+
+Benchmark 5: flake8 crates/ruff/resources/test/cpython
+  Time (mean ± σ):     12.260 s ±  0.321 s    [User: 102.934 s, System: 1.230 s]
+  Range (min … max):   11.848 s … 12.933 s    10 runs
+
+  Warning: Ignoring non-zero exit code.
+
+Summary
+  './target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache' ran
+   20.98 ± 0.62 times faster than 'autoflake --recursive --expand-star-imports --remove-all-unused-imports --remove-unused-variables --remove-duplicate-keys resources/test/cpython'
+   41.66 ± 1.18 times faster than 'flake8 crates/ruff/resources/test/cpython'
+   53.64 ± 0.77 times faster than 'pyflakes crates/ruff/resources/test/cpython'
+  159.43 ± 2.48 times faster than 'pycodestyle crates/ruff/resources/test/cpython'
+```
+
+To benchmark a subset of rules, e.g. `LineTooLong` and `DocLineTooLong`:
+
+```shell
+cargo build --release && hyperfine --warmup 10 \
+  "./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache -e --select W505,E501"
+```
+
+You can run `poetry install` from `./scripts/benchmarks` to create a working environment for the
+above. All reported benchmarks were computed using the versions specified by
+`./scripts/benchmarks/pyproject.toml` on Python 3.11.
+
+To benchmark Pylint, remove the following files from the CPython repository:
+
+```shell
+rm Lib/test/bad_coding.py \
+  Lib/test/bad_coding2.py \
+  Lib/test/bad_getattr.py \
+  Lib/test/bad_getattr2.py \
+  Lib/test/bad_getattr3.py \
+  Lib/test/badcert.pem \
+  Lib/test/badkey.pem \
+  Lib/test/badsyntax_3131.py \
+  Lib/test/badsyntax_future10.py \
+  Lib/test/badsyntax_future3.py \
+  Lib/test/badsyntax_future4.py \
+  Lib/test/badsyntax_future5.py \
+  Lib/test/badsyntax_future6.py \
+  Lib/test/badsyntax_future7.py \
+  Lib/test/badsyntax_future8.py \
+  Lib/test/badsyntax_future9.py \
+  Lib/test/badsyntax_pep3120.py \
+  Lib/test/test_asyncio/test_runners.py \
+  Lib/test/test_copy.py \
+  Lib/test/test_inspect.py \
+  Lib/test/test_typing.py
+```
+
+Then, from `crates/ruff/resources/test/cpython`, run: `time pylint -j 0 -E $(git ls-files '*.py')`. This
+will execute Pylint with maximum parallelism and only report errors.
+
+To benchmark Pyupgrade, run the following from `crates/ruff/resources/test/cpython`:
+
+```shell
+hyperfine --ignore-failure --warmup 5 --prepare "git reset --hard HEAD" \
+  "find . -type f -name \"*.py\" | xargs -P 0 pyupgrade --py311-plus"
+
+Benchmark 1: find . -type f -name "*.py" | xargs -P 0 pyupgrade --py311-plus
+  Time (mean ± σ):     30.119 s ±  0.195 s    [User: 28.638 s, System: 0.390 s]
+  Range (min … max):   29.813 s … 30.356 s    10 runs
+```
+
+### Microbenchmarks
+
+The `ruff_benchmark` crate benchmarks the linter and the formatter on individual files.
+
+You can run the benchmarks with
+
+```shell
+cargo benchmark
+```
+
+#### Benchmark-driven Development
+
+Ruff uses [Criterion.rs](https://bheisler.github.io/criterion.rs/book/) for benchmarks. You can use
+`--save-baseline=<name>` to store an initial baseline benchmark (e.g. on `main`) and then use
+`--benchmark=<name>` to compare against that benchmark. Criterion will print a message telling you
+if the benchmark improved/regressed compared to that baseline.
+
+```shell
+# Run once on your "baseline" code
+cargo benchmark --save-baseline=main
+
+# Then iterate with
+cargo benchmark --baseline=main
+```
+
+#### PR Summary
+
+You can use `--save-baseline` and `critcmp` to get a pretty comparison between two recordings.
+This is useful to illustrate the improvements of a PR.
+
+```shell
+# On main
+cargo benchmark --save-baseline=main
+
+# After applying your changes
+cargo benchmark --save-baseline=pr
+
+critcmp main pr
+```
+
+You must install [`critcmp`](https://github.com/BurntSushi/critcmp) for the comparison.
+
+```bash
+cargo install critcmp
+```
+
+#### Tips
+
+- Use `cargo benchmark <filter>` to only run specific benchmarks. For example: `cargo benchmark linter/pydantic`
+    to only run the pydantic tests.
+- Use `cargo benchmark --quiet` for a more cleaned up output (without statistical relevance)
+- Use `cargo benchmark --quick` to get faster results (more prone to noise)
+
+### Profiling Projects
+
+You can either use the microbenchmarks from above or a project directory for benchmarking. There
+are a lot of profiling tools out there,
+[The Rust Performance Book](https://nnethercote.github.io/perf-book/profiling.html) lists some
+examples.
+
+#### Linux
+
+Install `perf` and build `ruff_benchmark` with the `release-debug` profile and then run it with perf
+
+```shell
+cargo bench -p ruff_benchmark --no-run --profile=release-debug && perf record --call-graph dwarf -F 9999 cargo bench -p ruff_benchmark --profile=release-debug -- --profile-time=1
+```
+
+You can also use the `ruff_dev` launcher to run `ruff check` multiple times on a repository to
+gather enough samples for a good flamegraph (change the 999, the sample rate, and the 30, the number
+of checks, to your liking)
+
+```shell
+cargo build --bin ruff_dev --profile=release-debug
+perf record -g -F 999 target/release-debug/ruff_dev repeat --repeat 30 --exit-zero --no-cache path/to/cpython > /dev/null
+```
+
+Then convert the recorded profile
+
+```shell
+perf script -F +pid > /tmp/test.perf
+```
+
+You can now view the converted file with [firefox profiler](https://profiler.firefox.com/), with a
+more in-depth guide [here](https://profiler.firefox.com/docs/#/./guide-perf-profiling)
+
+An alternative is to convert the perf data to `flamegraph.svg` using
+[flamegraph](https://github.com/flamegraph-rs/flamegraph) (`cargo install flamegraph`):
+
+```shell
+flamegraph --perfdata perf.data
+```
+
+#### Mac
+
+Install [`cargo-instruments`](https://crates.io/crates/cargo-instruments):
+
+```shell
+cargo install cargo-instruments
+```
+
+Then run the profiler with
+
+```shell
+cargo instruments -t time --bench linter --profile release-debug -p ruff_benchmark -- --profile-time=1
+```
+
+- `-t`: Specifies what to profile. Useful options are `time` to profile the wall time and `alloc`
+    for profiling the allocations.
+- You may want to pass an additional filter to run a single test file
+
+Otherwise, follow the instructions from the linux section.
+
+## `cargo dev`
+
+`cargo dev` is a shortcut for `cargo run --package ruff_dev --bin ruff_dev`. You can run some useful
+utils with it:
+
+- `cargo dev print-ast <file>`: Print the AST of a python file using the
+    [RustPython parser](https://github.com/astral-sh/RustPython-Parser/tree/main/parser) that is
+    mainly used in Ruff. For `if True: pass # comment`, you can see the syntax tree, the byte offsets
+    for start and stop of each node and also how the `:` token, the comment and whitespace are not
+    represented anymore:
+
+```text
+[
+    If(
+        StmtIf {
+            range: 0..13,
+            test: Constant(
+                ExprConstant {
+                    range: 3..7,
+                    value: Bool(
+                        true,
+                    ),
+                    kind: None,
+                },
+            ),
+            body: [
+                Pass(
+                    StmtPass {
+                        range: 9..13,
+                    },
+                ),
+            ],
+            orelse: [],
+        },
+    ),
+]
+```
+
+- `cargo dev print-tokens <file>`: Print the tokens that the AST is built upon. Again for
+    `if True: pass # comment`:
+
+```text
+0 If 2
+3 True 7
+7 Colon 8
+9 Pass 13
+14 Comment(
+    "# comment",
+) 23
+23 Newline 24
+```
+
+- `cargo dev print-cst <file>`: Print the CST of a python file using
+    [LibCST](https://github.com/Instagram/LibCST), which is used in addition to the RustPython parser
+    in Ruff. E.g. for `if True: pass # comment` everything including the whitespace is represented:
+
+```text
+Module {
+    body: [
+        Compound(
+            If(
+                If {
+                    test: Name(
+                        Name {
+                            value: "True",
+                            lpar: [],
+                            rpar: [],
+                        },
+                    ),
+                    body: SimpleStatementSuite(
+                        SimpleStatementSuite {
+                            body: [
+                                Pass(
+                                    Pass {
+                                        semicolon: None,
+                                    },
+                                ),
+                            ],
+                            leading_whitespace: SimpleWhitespace(
+                                " ",
+                            ),
+                            trailing_whitespace: TrailingWhitespace {
+                                whitespace: SimpleWhitespace(
+                                    " ",
+                                ),
+                                comment: Some(
+                                    Comment(
+                                        "# comment",
+                                    ),
+                                ),
+                                newline: Newline(
+                                    None,
+                                    Real,
+                                ),
+                            },
+                        },
+                    ),
+                    orelse: None,
+                    leading_lines: [],
+                    whitespace_before_test: SimpleWhitespace(
+                        " ",
+                    ),
+                    whitespace_after_test: SimpleWhitespace(
+                        "",
+                    ),
+                    is_elif: false,
+                },
+            ),
+        ),
+    ],
+    header: [],
+    footer: [],
+    default_indent: "    ",
+    default_newline: "\n",
+    has_trailing_newline: true,
+    encoding: "utf-8",
+}
+```
+
+- `cargo dev generate-all`: Update `ruff.schema.json`, `docs/configuration.md` and `docs/rules`.
+    You can also set `RUFF_UPDATE_SCHEMA=1` to update `ruff.schema.json` during `cargo test`.
+- `cargo dev generate-cli-help`, `cargo dev generate-docs` and `cargo dev generate-json-schema`:
+    Update just `docs/configuration.md`, `docs/rules` and `ruff.schema.json` respectively.
+- `cargo dev generate-options`: Generate a markdown-compatible table of all `pyproject.toml`
+    options. Used for <https://beta.ruff.rs/docs/settings/>
+- `cargo dev generate-rules-table`: Generate a markdown-compatible table of all rules. Used for <https://beta.ruff.rs/docs/rules/>
+- `cargo dev round-trip <python file or jupyter notebook>`: Read a Python file or Jupyter Notebook,
+    parse it, serialize the parsed representation and write it back. Used to check how good our
+    representation is so that fixes don't rewrite irrelevant parts of a file.
+- `cargo dev format_dev`: See ruff_python_formatter README.md
+
+## Subsystems
+
+### Compilation Pipeline
+
+If we view Ruff as a compiler, in which the inputs are paths to Python files and the outputs are
+diagnostics, then our current compilation pipeline proceeds as follows:
+
+1. **File discovery**: Given paths like `foo/`, locate all Python files in any specified subdirectories, taking into account our hierarchical settings system and any `exclude` options.
+
+1. **Package resolution**: Determine the “package root” for every file by traversing over its parent directories and looking for `__init__.py` files.
+
+1. **Cache initialization**: For every “package root”, initialize an empty cache.
+
+1. **Analysis**: For every file, in parallel:
+
+    1. **Cache read**: If the file is cached (i.e., its modification timestamp hasn't changed since it was last analyzed), short-circuit, and return the cached diagnostics.
+
+    1. **Tokenization**: Run the lexer over the file to generate a token stream.
+
+    1. **Indexing**: Extract metadata from the token stream, such as: comment ranges, `# noqa` locations, `# isort: off` locations, “doc lines”, etc.
+
+    1. **Token-based rule evaluation**: Run any lint rules that are based on the contents of the token stream (e.g., commented-out code).
+
+    1. **Filesystem-based rule evaluation**: Run any lint rules that are based on the contents of the filesystem (e.g., lack of `__init__.py` file in a package).
+
+    1. **Logical line-based rule evaluation**: Run any lint rules that are based on logical lines (e.g., stylistic rules).
+
+    1. **Parsing**: Run the parser over the token stream to produce an AST. (This consumes the token stream, so anything that relies on the token stream needs to happen before parsing.)
+
+    1. **AST-based rule evaluation**: Run any lint rules that are based on the AST. This includes the vast majority of lint rules. As part of this step, we also build the semantic model for the current file as we traverse over the AST. Some lint rules are evaluated eagerly, as we iterate over the AST, while others are evaluated in a deferred manner (e.g., unused imports, since we can’t determine whether an import is unused until we’ve finished analyzing the entire file), after we’ve finished the initial traversal.
+
+    1. **Import-based rule evaluation**: Run any lint rules that are based on the module’s imports (e.g., import sorting). These could, in theory, be included in the AST-based rule evaluation phase — they’re just separated for simplicity.
+
+    1. **Physical line-based rule evaluation**: Run any lint rules that are based on physical lines (e.g., line-length).
+
+    1. **Suppression enforcement**: Remove any violations that are suppressed via `# noqa` directives or `per-file-ignores`.
+
+    1. **Cache write**: Write the generated diagnostics to the package cache using the file as a key.
+
+1. **Reporting**: Print diagnostics in the specified format (text, JSON, etc.), to the specified output channel (stdout, a file, etc.).

Cargo.toml

@@ -1,70 +1,80 @@
-[package]
-name = "ruff"
-version = "0.0.80"
+[workspace]
+members = ["crates/*"]
+resolver = "2"
+
+[workspace.package]
 edition = "2021"
+rust-version = "1.70"
+homepage = "https://beta.ruff.rs/docs"
+documentation = "https://beta.ruff.rs/docs"
+repository = "https://github.com/astral-sh/ruff"
+authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
+license = "MIT"
 
-[lib]
-name = "ruff"
-
-[dependencies]
-anyhow = { version = "1.0.60" }
-bincode = { version = "1.3.3" }
-chrono = { version = "0.4.21" }
-clap = { version = "4.0.1", features = ["derive"] }
+[workspace.dependencies]
+anyhow = { version = "1.0.69" }
+bitflags = { version = "2.3.1" }
+chrono = { version = "0.4.23", default-features = false, features = ["clock"] }
+clap = { version = "4.1.8", features = ["derive"] }
 colored = { version = "2.0.0" }
-common-path = { version = "1.0.0" }
-dirs = { version = "4.0.0" }
-fern = { version = "0.6.1" }
-filetime = { version = "0.2.17" }
-glob = { version = "0.3.0" }
+filetime = { version = "0.2.20" }
+glob = { version = "0.3.1" }
+globset = { version = "0.4.10" }
+ignore = { version = "0.4.20" }
+insta = { version = "1.31.0", feature = ["filters", "glob"] }
+is-macro = { version = "0.2.2" }
 itertools = { version = "0.10.5" }
-libcst = { git = "https://github.com/charliermarsh/LibCST", rev = "32a044c127668df44582f85699358e67803b0d73" }
 log = { version = "0.4.17" }
-notify = { version = "4.0.17" }
+memchr = "2.5.0"
+nohash-hasher = { version = "0.2.0" }
 num-bigint = { version = "0.4.3" }
-once_cell = { version = "1.13.1" }
-path-absolutize = { version = "3.0.14", features = ["once_cell_cache", "use_unix_paths_on_wasm"] }
-rayon = { version = "1.5.3" }
-regex = { version = "1.6.0" }
-rustpython-ast = { features = ["unparse"], git = "https://github.com/charliermarsh/RustPython.git", rev = "1b253a12705f84972cd76e8dc1cdaaccb233e5a5" }
-rustpython-common = { git = "https://github.com/charliermarsh/RustPython.git", rev = "1b253a12705f84972cd76e8dc1cdaaccb233e5a5" }
-rustpython-parser = { features = ["lalrpop"], git = "https://github.com/charliermarsh/RustPython.git", rev = "1b253a12705f84972cd76e8dc1cdaaccb233e5a5" }
-serde = { version = "1.0.143", features = ["derive"] }
-serde_json = { version = "1.0.83" }
+num-traits = { version = "0.2.15" }
+once_cell = { version = "1.17.1" }
+path-absolutize = { version = "3.0.14" }
+proc-macro2 = { version = "1.0.51" }
+quote = { version = "1.0.23" }
+regex = { version = "1.7.1" }
+rustc-hash = { version = "1.1.0" }
+schemars = { version = "0.8.12" }
+serde = { version = "1.0.152", features = ["derive"] }
+serde_json = { version = "1.0.93" }
+shellexpand = { version = "3.0.0" }
+similar = { version = "2.2.1", features = ["inline"] }
+smallvec = { version = "1.10.0" }
 strum = { version = "0.24.1", features = ["strum_macros"] }
 strum_macros = { version = "0.24.3" }
-textwrap = { version = "0.15.1" }
-titlecase = { version = "2.2.1" }
-toml = { version = "0.5.9" }
-update-informer = { version = "0.5.0", default_features = false, features = ["pypi"], optional = true }
-walkdir = { version = "2.3.2" }
+syn = { version = "2.0.15" }
+test-case = { version = "3.0.0" }
+thiserror = { version = "1.0.43" }
+toml = { version = "0.7.2" }
+wsl = { version = "0.1.0" }
 
-[target.'cfg(not(target_family = "wasm"))'.dependencies]
-cacache = { version = "10.0.1" } # uses async-std
-clearscreen = { version = "1.0.10" } # uses which
+# v1.0.1
+libcst = { git = "https://github.com/Instagram/LibCST.git", rev = "3cacca1a1029f05707e50703b49fe3dd860aa839", default-features = false }
 
-# https://docs.rs/getrandom/0.2.7/getrandom/#webassembly-support
-# For (future) wasm-pack support
-[target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
-getrandom = { version = "0.2.7", features = ["js"] }
-
-[dev-dependencies]
-assert_cmd = { version = "2.0.4" }
-insta = { version = "1.19.1", features = ["yaml"] }
-test-case = { version = "2.2.2" }
-
-[features]
-default = ["update-informer"]
-update-informer = ["dep:update-informer"]
+ruff_text_size = { git = "https://github.com/astral-sh/RustPython-Parser.git", rev = "4d03b9b5b212fc869e4cfda151414438186a7779" }
+rustpython-ast = { git = "https://github.com/astral-sh/RustPython-Parser.git", rev = "4d03b9b5b212fc869e4cfda151414438186a7779" , default-features = false, features = ["num-bigint"]}
+rustpython-format = { git = "https://github.com/astral-sh/RustPython-Parser.git", rev = "4d03b9b5b212fc869e4cfda151414438186a7779", default-features = false, features = ["num-bigint"] }
+rustpython-literal = { git = "https://github.com/astral-sh/RustPython-Parser.git", rev = "4d03b9b5b212fc869e4cfda151414438186a7779", default-features = false }
+rustpython-parser = { git = "https://github.com/astral-sh/RustPython-Parser.git", rev = "4d03b9b5b212fc869e4cfda151414438186a7779" , default-features = false, features = ["full-lexer", "num-bigint"] }
 
 [profile.release]
-panic = "abort"
-lto = "thin"
+lto = "fat"
 codegen-units = 1
-opt-level = 3
 
 [profile.dev.package.insta]
 opt-level = 3
 
 [profile.dev.package.similar]
 opt-level = 3
+
+# Reduce complexity of a parser function that would trigger a locals limit in a wasm tool.
+# 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

_typos.toml

@@ -0,0 +1,10 @@
+[files]
+extend-exclude = ["resources", "snapshots"]
+
+[default.extend-words]
+hel = "hel"
+whos = "whos"
+spawnve = "spawnve"
+ned = "ned"
+poit = "poit"
+BA = "BA" # acronym for "Bad Allowed", used in testing.

assets/badge/v0.json

@@ -0,0 +1,8 @@
+{
+  "label": "",
+  "message": "Ruff",
+  "logoSvg": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"128\" height=\"128\"><path d=\"M115.36 61.84 70.22 50.49 114.45 2.4a1.222 1.222 0 0 0-1.54-1.87L12.3 61.98c-.41.25-.64.72-.57 1.2.06.48.4.87.87 1.01l45.07 13.25-44.29 48.16c-.42.46-.44 1.15-.04 1.61.24.29.58.44.94.44.22 0 .45-.06.65-.19l100.78-63.41c.42-.26.64-.75.56-1.22-.08-.49-.43-.88-.91-.99z\" style=\"fill:#fcc21b\"/></svg>",
+  "logoWidth": 10,
+  "labelColor": "grey",
+  "color": "#E15759"
+}

assets/badge/v1.json

@@ -0,0 +1,8 @@
+{
+  "label": "",
+  "message": "Ruff",
+  "logoSvg": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"109\" height=\"132\" fill=\"none\"><g filter=\"url(#a)\"><path fill=\"#FCC21B\" d=\"m103.642 61.492-45.14-11.35 44.23-48.09a1.222 1.222 0 0 0-1.54-1.87L.582 61.632c-.41.25-.64.72-.57 1.2.06.48.4.87.87 1.01l45.07 13.25-44.29 48.16c-.42.46-.44 1.15-.04 1.61.24.29.58.44.94.44.22 0 .45-.06.65-.19l100.78-63.41c.42-.26.64-.75.56-1.22-.08-.49-.43-.88-.91-.99Z\"/></g><defs><filter id=\"a\" width=\"108.569\" height=\"131.302\" x=\"0\" y=\"0\" color-interpolation-filters=\"sRGB\" filterUnits=\"userSpaceOnUse\"><feFlood flood-opacity=\"0\" result=\"BackgroundImageFix\"/><feColorMatrix in=\"SourceAlpha\" result=\"hardAlpha\" values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0\"/><feOffset dx=\"4\" dy=\"4\"/><feComposite in2=\"hardAlpha\" operator=\"out\"/><feColorMatrix values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0\"/><feBlend in2=\"BackgroundImageFix\" result=\"effect1_dropShadow_7_4\"/><feBlend in=\"SourceGraphic\" in2=\"effect1_dropShadow_7_4\" result=\"shape\"/></filter></defs></svg>",
+  "logoWidth": 10,
+  "labelColor": "grey",
+  "color": "#E15759"
+}

assets/badge/v2.json

@@ -0,0 +1,8 @@
+{
+  "label": "",
+  "message": "Ruff",
+  "logoSvg": "<svg width=\"510\" height=\"622\" viewBox=\"0 0 510 622\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M206.701 0C200.964 0 196.314 4.64131 196.314 10.3667V41.4667C196.314 47.192 191.663 51.8333 185.927 51.8333H156.843C151.107 51.8333 146.456 56.4746 146.456 62.2V145.133C146.456 150.859 141.806 155.5 136.069 155.5H106.986C101.249 155.5 96.5988 160.141 96.5988 165.867V222.883C96.5988 228.609 91.9484 233.25 86.2118 233.25H57.1283C51.3917 233.25 46.7413 237.891 46.7413 243.617V300.633C46.7413 306.359 42.0909 311 36.3544 311H10.387C4.6504 311 0 315.641 0 321.367V352.467C0 358.192 4.6504 362.833 10.387 362.833H145.418C151.154 362.833 155.804 367.475 155.804 373.2V430.217C155.804 435.942 151.154 440.583 145.418 440.583H116.334C110.597 440.583 105.947 445.225 105.947 450.95V507.967C105.947 513.692 101.297 518.333 95.5601 518.333H66.4766C60.74 518.333 56.0896 522.975 56.0896 528.7V611.633C56.0896 617.359 60.74 622 66.4766 622H149.572C155.309 622 159.959 617.359 159.959 611.633V570.167H201.507C207.244 570.167 211.894 565.525 211.894 559.8V528.7C211.894 522.975 216.544 518.333 222.281 518.333H251.365C257.101 518.333 261.752 513.692 261.752 507.967V476.867C261.752 471.141 266.402 466.5 272.138 466.5H301.222C306.959 466.5 311.609 461.859 311.609 456.133V425.033C311.609 419.308 316.259 414.667 321.996 414.667H351.079C356.816 414.667 361.466 410.025 361.466 404.3V373.2C361.466 367.475 366.117 362.833 371.853 362.833H400.937C406.673 362.833 411.324 358.192 411.324 352.467V321.367C411.324 315.641 415.974 311 421.711 311H450.794C456.531 311 461.181 306.359 461.181 300.633V217.7C461.181 211.975 456.531 207.333 450.794 207.333H420.672C414.936 207.333 410.285 202.692 410.285 196.967V165.867C410.285 160.141 414.936 155.5 420.672 155.5H449.756C455.492 155.5 460.143 150.859 460.143 145.133V114.033C460.143 108.308 464.793 103.667 470.53 103.667H499.613C505.35 103.667 510 99.0253 510 93.3V10.3667C510 4.64132 505.35 0 499.613 0H206.701ZM168.269 440.583C162.532 440.583 157.882 445.225 157.882 450.95V507.967C157.882 513.692 153.231 518.333 147.495 518.333H118.411C112.675 518.333 108.024 522.975 108.024 528.7V559.8C108.024 565.525 112.675 570.167 118.411 570.167H159.959V528.7C159.959 522.975 164.61 518.333 170.346 518.333H199.43C205.166 518.333 209.817 513.692 209.817 507.967V476.867C209.817 471.141 214.467 466.5 220.204 466.5H249.287C255.024 466.5 259.674 461.859 259.674 456.133V425.033C259.674 419.308 264.325 414.667 270.061 414.667H299.145C304.881 414.667 309.532 410.025 309.532 404.3V373.2C309.532 367.475 314.182 362.833 319.919 362.833H349.002C354.739 362.833 359.389 358.192 359.389 352.467V321.367C359.389 315.641 364.039 311 369.776 311H398.859C404.596 311 409.246 306.359 409.246 300.633V269.533C409.246 263.808 404.596 259.167 398.859 259.167H318.88C313.143 259.167 308.493 254.525 308.493 248.8V217.7C308.493 211.975 313.143 207.333 318.88 207.333H347.963C353.7 207.333 358.35 202.692 358.35 196.967V165.867C358.35 160.141 363.001 155.5 368.737 155.5H397.821C403.557 155.5 408.208 150.859 408.208 145.133V114.033C408.208 108.308 412.858 103.667 418.595 103.667H447.678C453.415 103.667 458.065 99.0253 458.065 93.3V62.2C458.065 56.4746 453.415 51.8333 447.678 51.8333H208.778C203.041 51.8333 198.391 56.4746 198.391 62.2V145.133C198.391 150.859 193.741 155.5 188.004 155.5H158.921C153.184 155.5 148.534 160.141 148.534 165.867V222.883C148.534 228.609 143.883 233.25 138.147 233.25H109.063C103.327 233.25 98.6762 237.891 98.6762 243.617V300.633C98.6762 306.359 103.327 311 109.063 311H197.352C203.089 311 207.739 315.641 207.739 321.367V430.217C207.739 435.942 203.089 440.583 197.352 440.583H168.269Z\" fill=\"#D7FF64\"/></svg>",
+  "logoWidth": 10,
+  "labelColor": "grey",
+  "color": "#261230"
+}

assets/svg/Astral.svg

@@ -0,0 +1,24 @@
+<svg width="139" height="24" viewBox="0 0 139 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="138.764" height="24" rx="2.18182" fill="#261230"/>
+  <path
+    d="M8.72798 15.2726H9.91316V11.8697L9.6887 10.4062L9.8952 10.3343L12.1309 15.1649L14.3486 10.3343L14.5461 10.4062L14.3486 11.8607V15.2726H15.5248V8.72714H13.9535L12.2117 12.7137H12.0142L10.2723 8.72714H8.72798V15.2726Z"
+    fill="#D7FF64"/>
+  <path
+    d="M22.3432 15.2726H23.6631L21.3017 8.72714H19.7574L17.4589 15.2726H18.7069L19.1558 13.9797H21.9033L22.3432 15.2726ZM19.497 13.0279L19.901 11.8607L20.4308 10.0021H20.6463L21.176 11.8607L21.5711 13.0279H19.497Z"
+    fill="#D7FF64"/>
+  <path
+    d="M25.4209 15.2726H28.1234C30.1077 15.2726 30.9876 14.1413 30.9876 12.0044C30.9876 9.92131 30.1706 8.72714 28.1234 8.72714H25.4209V15.2726ZM26.624 14.2131V9.77765H28.0965C29.147 9.77765 29.7306 10.1907 29.7306 11.4477V12.5521C29.7306 13.6923 29.2817 14.2131 28.0965 14.2131H26.624Z"
+    fill="#D7FF64"/>
+  <path
+    d="M33.079 15.2726H37.6491V14.2131H34.2822V12.3815H37.2002V11.3938H34.2822V9.77765H37.6491V8.72714H33.079V15.2726Z"
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+    fill="#D7FF64"/>
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+    fill="#D7FF64"/>
+</svg>

clippy.toml

@@ -0,0 +1,7 @@
+doc-valid-idents = [
+  "StackOverflow",
+  "CodeQL",
+  "IPython",
+  "NumPy",
+  "..",
+]

crates/flake8_to_ruff/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "flake8-to-ruff"
+version = "0.0.279"
+description = """
+Convert Flake8 configuration files to Ruff configuration files.
+"""
+authors = { workspace = true }
+edition = { workspace = true }
+rust-version = { workspace = true }
+homepage = { workspace = true }
+documentation = { workspace = true }
+repository = { workspace = true }
+license = { 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 }
+rustc-hash = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+strum = { workspace = true }
+strum_macros = { workspace = true }
+toml = { workspace = true }

crates/flake8_to_ruff/README.md

@@ -0,0 +1,99 @@
+# flake8-to-ruff
+
+Convert existing Flake8 configuration files (`setup.cfg`, `tox.ini`, or `.flake8`) for use with
+[Ruff](https://github.com/astral-sh/ruff).
+
+Generates a Ruff-compatible `pyproject.toml` section.
+
+## Installation and Usage
+
+### Installation
+
+Available as [`flake8-to-ruff`](https://pypi.org/project/flake8-to-ruff/) on PyPI:
+
+```shell
+pip install flake8-to-ruff
+```
+
+### Usage
+
+To run `flake8-to-ruff`:
+
+```shell
+flake8-to-ruff path/to/setup.cfg
+flake8-to-ruff path/to/tox.ini
+flake8-to-ruff path/to/.flake8
+```
+
+`flake8-to-ruff` will print the relevant `pyproject.toml` sections to standard output, like so:
+
+```toml
+[tool.ruff]
+exclude = [
+    '.svn',
+    'CVS',
+    '.bzr',
+    '.hg',
+    '.git',
+    '__pycache__',
+    '.tox',
+    '.idea',
+    '.mypy_cache',
+    '.venv',
+    'node_modules',
+    '_state_machine.py',
+    'test_fstring.py',
+    'bad_coding2.py',
+    'badsyntax_*.py',
+]
+select = [
+    'A',
+    'E',
+    'F',
+    'Q',
+]
+ignore = []
+
+[tool.ruff.flake8-quotes]
+inline-quotes = 'single'
+
+[tool.ruff.pep8-naming]
+ignore-names = [
+    'foo',
+    'bar',
+]
+```
+
+### Plugins
+
+`flake8-to-ruff` will attempt to infer any activated plugins based on the settings provided in your
+configuration file.
+
+For example, if your `.flake8` file includes a `docstring-convention` property, `flake8-to-ruff`
+will enable the appropriate [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/)
+checks.
+
+Alternatively, you can manually specify plugins on the command-line:
+
+```shell
+flake8-to-ruff path/to/.flake8 --plugin flake8-builtins --plugin flake8-quotes
+```
+
+## Limitations
+
+1. Ruff only supports a subset of the Flake configuration options. `flake8-to-ruff` will warn on and
+    ignore unsupported options in the `.flake8` file (or equivalent). (Similarly, Ruff has a few
+    configuration options that don't exist in Flake8.)
+1. Ruff will omit any rule codes that are unimplemented or unsupported by Ruff, including rule
+    codes from unsupported plugins. (See the
+    [documentation](https://beta.ruff.rs/docs/faq/#how-does-ruff-compare-to-flake8) for the complete
+    list of supported plugins.)
+
+## License
+
+MIT
+
+## Contributing
+
+Contributions are welcome and hugely appreciated. To get started, check out the
+[contributing guidelines](https://github.com/astral-sh/ruff/blob/main/CONTRIBUTING.md).

crates/flake8_to_ruff/examples/cryptography/pyproject.toml

@@ -0,0 +1,65 @@
+[build-system]
+requires = [
+    # The minimum setuptools version is specific to the PEP 517 backend,
+    # and may be stricter than the version required in `setup.cfg`
+    "setuptools>=40.6.0,!=60.9.0",
+    "wheel",
+    # Must be kept in sync with the `install_requirements` in `setup.cfg`
+    "cffi>=1.12; platform_python_implementation != 'PyPy'",
+    "setuptools-rust>=0.11.4",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 79
+target-version = ["py36"]
+
+[tool.pytest.ini_options]
+addopts = "-r s --capture=no --strict-markers --benchmark-disable"
+markers = [
+    "skip_fips: this test is not executed in FIPS mode",
+    "supported: parametrized test requiring only_if and skip_message",
+]
+
+[tool.mypy]
+show_error_codes = true
+check_untyped_defs = true
+no_implicit_reexport = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+warn_unused_configs = true
+strict_equality = true
+
+[[tool.mypy.overrides]]
+module = [
+    "pretend"
+]
+ignore_missing_imports = true
+
+[tool.coverage.run]
+branch = true
+relative_files = true
+source = [
+    "cryptography",
+    "tests/",
+]
+
+[tool.coverage.paths]
+source = [
+   "src/cryptography",
+   "*.tox/*/lib*/python*/site-packages/cryptography",
+   "*.tox\\*\\Lib\\site-packages\\cryptography",
+   "*.tox/pypy/site-packages/cryptography",
+]
+tests =[
+   "tests/",
+   "*tests\\",
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "@abc.abstractmethod",
+    "@abc.abstractproperty",
+    "@typing.overload",
+    "if typing.TYPE_CHECKING",
+]

crates/flake8_to_ruff/examples/cryptography/setup.cfg

@@ -0,0 +1,91 @@
+[metadata]
+name = cryptography
+version = attr: cryptography.__version__
+description = cryptography is a package which provides cryptographic recipes and primitives to Python developers.
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+license = BSD-3-Clause OR Apache-2.0
+url = https://github.com/pyca/cryptography
+author = The Python Cryptographic Authority and individual contributors
+author_email = cryptography-dev@python.org
+project_urls =
+    Documentation=https://cryptography.io/
+    Source=https://github.com/pyca/cryptography/
+    Issues=https://github.com/pyca/cryptography/issues
+    Changelog=https://cryptography.io/en/latest/changelog/
+classifiers =
+    Development Status :: 5 - Production/Stable
+    Intended Audience :: Developers
+    License :: OSI Approved :: Apache Software License
+    License :: OSI Approved :: BSD License
+    Natural Language :: English
+    Operating System :: MacOS :: MacOS X
+    Operating System :: POSIX
+    Operating System :: POSIX :: BSD
+    Operating System :: POSIX :: Linux
+    Operating System :: Microsoft :: Windows
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+    Topic :: Security :: Cryptography
+
+[options]
+python_requires = >=3.6
+include_package_data = True
+zip_safe = False
+package_dir =
+    =src
+packages = find:
+# `install_requires` must be kept in sync with `pyproject.toml`
+install_requires =
+    cffi >=1.12
+
+[options.packages.find]
+where = src
+exclude =
+    _cffi_src
+    _cffi_src.*
+
+[options.extras_require]
+test =
+    pytest>=6.2.0
+    pytest-benchmark
+    pytest-cov
+    pytest-subtests
+    pytest-xdist
+    pretend
+    iso8601
+    pytz
+    hypothesis>=1.11.4,!=3.79.2
+docs =
+    sphinx >= 1.6.5,!=1.8.0,!=3.1.0,!=3.1.1,!=5.2.0,!=5.2.0.post0
+    sphinx_rtd_theme
+docstest =
+    pyenchant >= 1.6.11
+    twine >= 1.12.0
+    sphinxcontrib-spelling >= 4.0.1
+sdist =
+    setuptools_rust >= 0.11.4
+pep8test =
+    black
+    flake8
+    flake8-import-order
+    pep8-naming
+# This extra is for OpenSSH private keys that use bcrypt KDF
+# Versions: v3.1.3 - ignore_few_rounds, v3.1.5 - abi3
+ssh =
+    bcrypt >= 3.1.5
+
+[flake8]
+ignore = E203,E211,W503,W504,N818
+exclude = .tox,*.egg,.git,_build,.hypothesis
+select = E,W,F,N,I
+application-import-names = cryptography,cryptography_vectors,tests

crates/flake8_to_ruff/examples/jupyterhub.ini

@@ -0,0 +1,19 @@
+[flake8]
+# Ignore style and complexity
+# E: style errors
+# W: style warnings
+# C: complexity
+# D: docstring warnings (unused pydocstyle extension)
+# F841: local variable assigned but never used
+ignore = E, C, W, D, F841
+builtins = c, get_config
+exclude =
+    .cache,
+    .github,
+    docs,
+    jupyterhub/alembic*,
+    onbuild,
+    scripts,
+    share,
+    tools,
+    setup.py

crates/flake8_to_ruff/examples/manim.ini

@@ -0,0 +1,43 @@
+[flake8]
+# Exclude the grpc generated code
+exclude = ./manim/grpc/gen/*
+max-complexity = 15
+max-line-length = 88
+statistics = True
+# Prevents some flake8-rst-docstrings errors
+rst-roles = attr,class,func,meth,mod,obj,ref,doc,exc
+rst-directives = manim, SEEALSO, seealso
+docstring-convention=numpy
+
+select = A,A00,B,B9,C4,C90,D,E,F,F,PT,RST,SIM,W
+
+                # General Compatibility
+extend-ignore = E203, W503, D202, D212, D213, D404
+
+                # Misc
+                F401, F403, F405, F841, E501, E731, E402, F811, F821,
+
+                # Plug-in: flake8-builtins
+                A001, A002, A003,
+
+                # Plug-in: flake8-bugbear
+                B006, B007, B008, B009, B010, B903, B950,
+
+                # Plug-in: flake8-simplify
+                SIM105, SIM106, SIM119,
+
+                # Plug-in: flake8-comprehensions
+                C901
+
+                # Plug-in: flake8-pytest-style
+                PT001, PT004, PT006, PT011, PT018, PT022, PT023,
+
+                # Plug-in: flake8-docstrings
+                D100, D101, D102, D103, D104, D105, D106, D107,
+                D200, D202, D204, D205, D209,
+                D301,
+                D400, D401, D402, D403, D405, D406, D407, D409, D411, D412, D414,
+
+                # Plug-in: flake8-rst-docstrings
+                RST201, RST203, RST210, RST212, RST213, RST215,
+                RST301, RST303,

crates/flake8_to_ruff/examples/poetry.ini

@@ -0,0 +1,36 @@
+[flake8]
+min_python_version = 3.7.0
+max-line-length = 88
+ban-relative-imports = true
+# flake8-use-fstring: https://github.com/MichaelKim0407/flake8-use-fstring#--percent-greedy-and---format-greedy
+format-greedy = 1
+inline-quotes = double
+enable-extensions = TC, TC1
+type-checking-strict = true
+eradicate-whitelist-extend = ^-.*;
+extend-ignore =
+    # E203: Whitespace before ':' (pycqa/pycodestyle#373)
+    E203,
+    # SIM106: Handle error-cases first
+    SIM106,
+    # ANN101: Missing type annotation for self in method
+    ANN101,
+    # ANN102: Missing type annotation for cls in classmethod
+    ANN102,
+    # PIE781: assign-and-return
+    PIE781,
+    # PIE798 no-unnecessary-class: Consider using a module for namespacing instead
+    PIE798,
+per-file-ignores =
+    # TC002: Move third-party import '...' into a type-checking block
+    __init__.py:TC002,
+    # ANN201: Missing return type annotation for public function
+    tests/test_*:ANN201
+    tests/**/test_*:ANN201
+extend-exclude =
+    # Frozen and not subject to change in this repo:
+    get-poetry.py,
+    install-poetry.py,
+    # External to the project's coding standards:
+    tests/fixtures/*,
+    tests/**/fixtures/*,

crates/flake8_to_ruff/examples/python-discord.ini

@@ -0,0 +1,19 @@
+[flake8]
+max-line-length=120
+docstring-convention=all
+import-order-style=pycharm
+application_import_names=bot,tests
+exclude=.cache,.venv,.git,constants.py
+extend-ignore=
+    B311,W503,E226,S311,T000,E731
+    # Missing Docstrings
+    D100,D104,D105,D107,
+    # Docstring Whitespace
+    D203,D212,D214,D215,
+    # Docstring Quotes
+    D301,D302,
+    # Docstring Content
+    D400,D401,D402,D404,D405,D406,D407,D408,D409,D410,D411,D412,D413,D414,D416,D417
+    # Type Annotations
+    ANN002,ANN003,ANN101,ANN102,ANN204,ANN206,ANN401
+per-file-ignores=tests/*:D,ANN

crates/flake8_to_ruff/examples/requests.ini

@@ -0,0 +1,6 @@
+[flake8]
+ignore = E203, E501, W503
+per-file-ignores =
+    requests/__init__.py:E402, F401
+    requests/compat.py:E402, F401
+    tests/compat.py:F401

crates/flake8_to_ruff/pyproject.toml

@@ -0,0 +1,34 @@
+[project]
+name = "flake8-to-ruff"
+keywords = ["automation", "flake8", "pycodestyle", "pyflakes", "pylint", "clippy"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Environment :: Console",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3 :: Only",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Software Development :: Quality Assurance",
+]
+author = "Charlie Marsh"
+author_email = "charlie.r.marsh@gmail.com"
+description = "Convert existing Flake8 configuration to Ruff."
+requires-python = ">=3.7"
+
+[project.urls]
+repository = "https://github.com/astral-sh/ruff#subdirectory=crates/flake8_to_ruff"
+
+[build-system]
+requires = ["maturin>=1.0,<2.0"]
+build-backend = "maturin"
+
+[tool.maturin]
+bindings = "bin"
+strip = true

crates/flake8_to_ruff/src/main.rs

@@ -0,0 +1,68 @@
+//! Utility to generate Ruff's `pyproject.toml` section from a Flake8 INI file.
+
+use std::path::PathBuf;
+
+use anyhow::Result;
+use clap::Parser;
+use configparser::ini::Ini;
+
+use ruff::flake8_to_ruff::{self, ExternalConfig};
+use ruff::logging::{set_up_logging, LogLevel};
+
+#[derive(Parser)]
+#[command(
+    about = "Convert existing Flake8 configuration to Ruff.",
+    long_about = None
+)]
+struct Args {
+    /// Path to the Flake8 configuration file (e.g., `setup.cfg`, `tox.ini`, or
+    /// `.flake8`).
+    #[arg(required = true)]
+    file: PathBuf,
+    /// Optional path to a `pyproject.toml` file, used to ensure compatibility
+    /// with Black.
+    #[arg(long)]
+    pyproject: Option<PathBuf>,
+    /// List of plugins to enable.
+    #[arg(long, value_delimiter = ',')]
+    plugin: Option<Vec<flake8_to_ruff::Plugin>>,
+}
+
+fn main() -> Result<()> {
+    set_up_logging(&LogLevel::Default)?;
+
+    let args = Args::parse();
+
+    // Read the INI file.
+    let mut ini = Ini::new_cs();
+    ini.set_multiline(true);
+    let config = ini.load(args.file).map_err(|msg| anyhow::anyhow!(msg))?;
+
+    // Read the pyproject.toml file.
+    let pyproject = args.pyproject.map(flake8_to_ruff::parse).transpose()?;
+    let external_config = pyproject
+        .as_ref()
+        .and_then(|pyproject| pyproject.tool.as_ref())
+        .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)?;
+
+    #[allow(clippy::print_stdout)]
+    {
+        println!("{}", toml::to_string_pretty(&pyproject)?);
+    }
+
+    Ok(())
+}

crates/ruff/Cargo.toml

@@ -0,0 +1,95 @@
+[package]
+name = "ruff"
+version = "0.0.279"
+publish = false
+authors = { workspace = true }
+edition = { workspace = true }
+rust-version = { workspace = true }
+homepage = { workspace = true }
+documentation = { workspace = true }
+repository = { workspace = true }
+license = { workspace = true }
+readme = "README.md"
+
+[lib]
+name = "ruff"
+
+[dependencies]
+ruff_cache = { path = "../ruff_cache" }
+ruff_diagnostics = { path = "../ruff_diagnostics", features = ["serde"] }
+ruff_index = { path = "../ruff_index" }
+ruff_macros = { path = "../ruff_macros" }
+ruff_python_trivia = { path = "../ruff_python_trivia" }
+ruff_python_ast = { path = "../ruff_python_ast", features = ["serde"] }
+ruff_python_semantic = { path = "../ruff_python_semantic" }
+ruff_python_stdlib = { path = "../ruff_python_stdlib" }
+ruff_rustpython = { path = "../ruff_rustpython" }
+ruff_text_size = { workspace = true }
+ruff_textwrap = { path = "../ruff_textwrap" }
+
+annotate-snippets = { version = "0.9.1", features = ["color"] }
+anyhow = { workspace = true }
+bitflags = { workspace = true }
+chrono = { workspace = true }
+clap = { workspace = true, features = ["derive", "string"], optional = true }
+colored = { workspace = true }
+dirs = { version = "5.0.0" }
+fern = { version = "0.6.1" }
+glob = { workspace = true }
+globset = { workspace = true }
+ignore = { workspace = true }
+imperative = { version = "1.0.4" }
+is-macro = { workspace = true }
+itertools = { workspace = true }
+libcst = { workspace = true }
+log = { workspace = true }
+memchr = { workspace = true }
+natord = { version = "1.0.9" }
+nohash-hasher = { workspace = true }
+num-bigint = { workspace = true }
+num-traits = { workspace = true }
+once_cell = { workspace = true }
+path-absolutize = { workspace = true, features = [
+  "once_cell_cache",
+  "use_unix_paths_on_wasm",
+] }
+pathdiff = { version = "0.2.1" }
+pep440_rs = { version = "0.3.1", features = ["serde"] }
+phf = { version = "0.11", features = ["macros"] }
+pyproject-toml = { version = "0.6.0" }
+quick-junit = { version = "0.3.2" }
+regex = { workspace = true }
+result-like = { version = "0.4.6" }
+rustc-hash = { workspace = true }
+rustpython-format = { workspace = true }
+rustpython-parser = { workspace = true }
+schemars = { workspace = true, optional = true }
+semver = { version = "1.0.16" }
+serde = { workspace = true }
+serde_json = { workspace = true }
+serde_with = { version = "3.0.0" }
+similar = { workspace = true }
+shellexpand = { workspace = true }
+smallvec = { workspace = true }
+strum = { workspace = true }
+strum_macros = { workspace = true }
+thiserror = { version = "1.0.43" }
+toml = { workspace = true }
+typed-arena = { version = "2.0.2" }
+unicode-width = { version = "0.1.10" }
+unicode_names2 = { version = "0.6.0", git = "https://github.com/youknowone/unicode_names2.git", rev = "4ce16aa85cbcdd9cc830410f1a72ef9a235f2fde" }
+wsl = { version = "0.1.0" }
+
+[dev-dependencies]
+insta = { workspace = true }
+pretty_assertions = "1.3.0"
+test-case = { workspace = true }
+# Disable colored output in tests
+colored = { workspace = true, features = ["no-color"] }
+tempfile = "3.6.0"
+
+[features]
+default = []
+schemars = ["dep:schemars"]
+# Enables the UnreachableCode rule
+unreachable-code = []

crates/ruff/resources/test/disallowed_rule_names.txt

@@ -0,0 +1,8 @@
+avoid-*
+do-not-*
+uses-*
+*-used
+rewrite-*
+prefer-*
+consider-*
+use-*

crates/ruff/resources/test/fixtures/README.md

@@ -0,0 +1,3 @@
+# fixtures
+
+Fixture files used for snapshot testing.

crates/ruff/resources/test/fixtures/airflow/AIR001.py

@@ -0,0 +1,16 @@
+from airflow.operators import PythonOperator
+
+
+def my_callable():
+    pass
+
+
+my_task = PythonOperator(task_id="my_task", callable=my_callable)
+my_task_2 = PythonOperator(callable=my_callable, task_id="my_task_2")
+
+incorrect_name = PythonOperator(task_id="my_task")
+incorrect_name_2 = PythonOperator(callable=my_callable, task_id="my_task_2")
+
+from my_module import MyClass
+
+incorrect_name = MyClass(task_id="my_task")

crates/ruff/resources/test/fixtures/control-flow-graph/assert.py

@@ -0,0 +1,11 @@
+def func():
+    assert True
+
+def func():
+    assert False
+
+def func():
+    assert True, "oops"
+
+def func():
+    assert False, "oops"

crates/ruff/resources/test/fixtures/control-flow-graph/async-for.py

@@ -0,0 +1,41 @@
+def func():
+    async for i in range(5):
+        print(i)
+
+def func():
+    async for i in range(20):
+        print(i)
+    else:
+        return 0
+
+def func():
+    async for i in range(10):
+        if i == 5:
+            return 1
+    return 0
+
+def func():
+    async for i in range(111):
+        if i == 5:
+            return 1
+    else:
+        return 0
+    return 2
+
+def func():
+    async for i in range(12):
+        continue
+
+def func():
+    async for i in range(1110):
+        if True:
+            continue
+
+def func():
+    async for i in range(13):
+        break
+
+def func():
+    async for i in range(1110):
+        if True:
+            break

crates/ruff/resources/test/fixtures/control-flow-graph/for.py

@@ -0,0 +1,41 @@
+def func():
+    for i in range(5):
+        print(i)
+
+def func():
+    for i in range(20):
+        print(i)
+    else:
+        return 0
+
+def func():
+    for i in range(10):
+        if i == 5:
+            return 1
+    return 0
+
+def func():
+    for i in range(111):
+        if i == 5:
+            return 1
+    else:
+        return 0
+    return 2
+
+def func():
+    for i in range(12):
+        continue
+
+def func():
+    for i in range(1110):
+        if True:
+            continue
+
+def func():
+    for i in range(13):
+        break
+
+def func():
+    for i in range(1110):
+        if True:
+            break

crates/ruff/resources/test/fixtures/control-flow-graph/if.py

@@ -0,0 +1,108 @@
+def func():
+    if False:
+        return 0
+    return 1
+
+def func():
+    if True:
+        return 1
+    return 0
+
+def func():
+    if False:
+        return 0
+    else:
+        return 1
+
+def func():
+    if True:
+        return 1
+    else:
+        return 0
+
+def func():
+    if False:
+        return 0
+    else:
+        return 1
+    return "unreachable"
+
+def func():
+    if True:
+        return 1
+    else:
+        return 0
+    return "unreachable"
+
+def func():
+    if True:
+        if True:
+            return 1
+        return 2
+    else:
+        return 3
+    return "unreachable2"
+
+def func():
+    if False:
+        return 0
+
+def func():
+    if True:
+        return 1
+
+def func():
+    if True:
+        return 1
+    elif False:
+        return 2
+    else:
+        return 0
+
+def func():
+    if False:
+        return 1
+    elif True:
+        return 2
+    else:
+        return 0
+
+def func():
+    if True:
+        if False:
+            return 0
+        elif True:
+            return 1
+        else:
+            return 2
+        return 3
+    elif True:
+        return 4
+    else:
+        return 5
+    return 6
+
+def func():
+    if False:
+        return "unreached"
+    elif False:
+        return "also unreached"
+    return "reached"
+
+# Test case found in the Bokeh repository that trigger a false positive.
+def func(self, obj: BytesRep) -> bytes:
+    data = obj["data"]
+
+    if isinstance(data, str):
+        return base64.b64decode(data)
+    elif isinstance(data, Buffer):
+        buffer = data
+    else:
+        id = data["id"]
+
+        if id in self._buffers:
+            buffer = self._buffers[id]
+        else:
+            self.error(f"can't resolve buffer '{id}'")
+
+    return buffer.data

crates/ruff/resources/test/fixtures/control-flow-graph/match.py

@@ -0,0 +1,131 @@
+def func(status):
+    match status:
+        case _:
+            return 0
+    return "unreachable"
+
+def func(status):
+    match status:
+        case 1:
+            return 1
+    return 0
+
+def func(status):
+    match status:
+        case 1:
+            return 1
+        case _:
+            return 0
+
+def func(status):
+    match status:
+        case 1 | 2 | 3:
+            return 5
+    return 6
+
+def func(status):
+    match status:
+        case 1 | 2 | 3:
+            return 5
+        case _:
+            return 10
+    return 0
+
+def func(status):
+    match status:
+        case 0:
+            return 0
+        case 1:
+            return 1
+        case 1:
+            return "1 again"
+        case _:
+            return 3
+
+def func(status):
+    i = 0
+    match status, i:
+        case _, _:
+            return 0
+
+def func(status):
+    i = 0
+    match status, i:
+        case _, 0:
+            return 0
+        case _, 2:
+            return 0
+
+def func(point):
+    match point:
+        case (0, 0):
+            print("Origin")
+        case _:
+            raise ValueError("oops")
+
+def func(point):
+    match point:
+        case (0, 0):
+            print("Origin")
+        case (0, y):
+            print(f"Y={y}")
+        case (x, 0):
+            print(f"X={x}")
+        case (x, y):
+            print(f"X={x}, Y={y}")
+        case _:
+            raise ValueError("Not a point")
+
+def where_is(point):
+    class Point:
+        x: int
+        y: int
+
+    match point:
+        case Point(x=0, y=0):
+            print("Origin")
+        case Point(x=0, y=y):
+            print(f"Y={y}")
+        case Point(x=x, y=0):
+            print(f"X={x}")
+        case Point():
+            print("Somewhere else")
+        case _:
+            print("Not a point")
+
+def func(points):
+    match points:
+        case []:
+            print("No points")
+        case [Point(0, 0)]:
+            print("The origin")
+        case [Point(x, y)]:
+            print(f"Single point {x}, {y}")
+        case [Point(0, y1), Point(0, y2)]:
+            print(f"Two on the Y axis at {y1}, {y2}")
+        case _:
+            print("Something else")
+
+def func(point):
+    match point:
+        case Point(x, y) if x == y:
+            print(f"Y=X at {x}")
+        case Point(x, y):
+            print(f"Not on the diagonal")
+
+def func():
+    from enum import Enum
+    class Color(Enum):
+        RED = 'red'
+        GREEN = 'green'
+        BLUE = 'blue'
+
+    color = Color(input("Enter your choice of 'red', 'blue' or 'green': "))
+
+    match color:
+        case Color.RED:
+            print("I see red!")
+        case Color.GREEN:
+            print("Grass is green")
+        case Color.BLUE:
+            print("I'm feeling the blues :(")

crates/ruff/resources/test/fixtures/control-flow-graph/raise.py

@@ -0,0 +1,5 @@
+def func():
+    raise Exception
+
+def func():
+    raise "a glass!"

crates/ruff/resources/test/fixtures/control-flow-graph/simple.py

@@ -0,0 +1,23 @@
+def func():
+    pass
+
+def func():
+    pass
+
+def func():
+    return
+
+def func():
+    return 1
+
+def func():
+    return 1
+    return "unreachable"
+
+def func():
+    i = 0
+
+def func():
+    i = 0
+    i += 2
+    return i

crates/ruff/resources/test/fixtures/control-flow-graph/try.py

@@ -0,0 +1,41 @@
+def func():
+    try:
+       ...
+    except Exception:
+       ...
+    except OtherException as e:
+       ...
+    else:
+       ...
+    finally:
+       ...
+
+def func():
+    try:
+       ...
+    except Exception:
+       ...
+
+def func():
+    try:
+       ...
+    except Exception:
+       ...
+    except OtherException as e:
+       ...
+
+def func():
+    try:
+       ...
+    except Exception:
+       ...
+    except OtherException as e:
+       ...
+    else:
+       ...
+
+def func():
+    try:
+       ...
+    finally:
+       ...

crates/ruff/resources/test/fixtures/control-flow-graph/while.py

@@ -0,0 +1,121 @@
+def func():
+    while False:
+        return "unreachable"
+    return 1
+
+def func():
+    while False:
+        return "unreachable"
+    else:
+        return 1
+
+def func():
+    while False:
+        return "unreachable"
+    else:
+        return 1
+    return "also unreachable"
+
+def func():
+    while True:
+        return 1
+    return "unreachable"
+
+def func():
+    while True:
+        return 1
+    else:
+        return "unreachable"
+
+def func():
+    while True:
+        return 1
+    else:
+        return "unreachable"
+    return "also unreachable"
+
+def func():
+    i = 0
+    while False:
+        i += 1
+    return i
+
+def func():
+    i = 0
+    while True:
+        i += 1
+    return i
+
+def func():
+    while True:
+        pass
+    return 1
+
+def func():
+    i = 0
+    while True:
+        if True:
+            print("ok")
+        i += 1
+    return i
+
+def func():
+    i = 0
+    while True:
+        if False:
+            print("ok")
+        i += 1
+    return i
+
+def func():
+    while True:
+        if True:
+            return 1
+    return 0
+
+def func():
+    while True:
+        continue
+
+def func():
+    while False:
+        continue
+
+def func():
+    while True:
+        break
+
+def func():
+    while False:
+        break
+
+def func():
+    while True:
+        if True:
+            continue
+
+def func():
+    while True:
+        if True:
+            break
+
+'''
+TODO: because `try` statements aren't handled this triggers a false positive as
+the last statement is reached, but the rules thinks it isn't (it doesn't
+see/process the break statement).
+
+# Test case found in the Bokeh repository that trigger a false positive.
+def bokeh2(self, host: str = DEFAULT_HOST, port: int = DEFAULT_PORT) -> None:
+    self.stop_serving = False
+    while True:
+        try:
+            self.server = HTTPServer((host, port), HtmlOnlyHandler)
+            self.host = host
+            self.port = port
+            break
+        except OSError:
+            log.debug(f"port {port} is in use, trying to next one")
+            port += 1
+
+    self.thread = threading.Thread(target=self._run_web_server)
+'''

crates/ruff/resources/test/fixtures/eradicate/ERA001.py

@@ -0,0 +1,21 @@
+#import os
+# from foo import junk
+#a = 3
+a = 4
+#foo(1, 2, 3)
+
+def foo(x, y, z):
+    content = 1 # print('hello')
+    print(x, y, z)
+
+    # This is a real comment.
+    # # This is a (nested) comment.
+    #return True
+    return False
+
+#import os  # noqa: ERA001
+
+
+class A():
+    pass
+    # b = c

crates/ruff/resources/test/fixtures/flake8_2020/YTT101.py

@@ -0,0 +1,12 @@
+import sys
+from sys import version, version as v
+
+print(sys.version)
+
+print(sys.version[:3])
+print(version[:3])
+print(v[:3])
+
+# the tool is timid and only flags certain numeric slices
+i = 3
+print(sys.version[:i])

crates/ruff/resources/test/fixtures/flake8_2020/YTT102.py

@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+py_minor = sys.version[2]
+py_minor = version[2]

crates/ruff/resources/test/fixtures/flake8_2020/YTT103.py

@@ -0,0 +1,8 @@
+import sys
+from sys import version
+
+version < "3.5"
+sys.version < "3.5"
+sys.version <= "3.5"
+sys.version > "3.5"
+sys.version >= "3.5"

crates/ruff/resources/test/fixtures/flake8_2020/YTT201.py

@@ -0,0 +1,10 @@
+import sys
+from sys import version_info
+
+print("{}.{}".format(*sys.version_info))
+PY3 = sys.version_info[0] >= 3
+
+PY3 = sys.version_info[0] == 3
+PY3 = version_info[0] == 3
+PY2 = sys.version_info[0] != 3
+PY2 = version_info[0] != 3

crates/ruff/resources/test/fixtures/flake8_2020/YTT202.py

@@ -0,0 +1,7 @@
+import six
+from six import PY3
+
+if six.PY3:
+    print("3")
+if PY3:
+    print("3")

crates/ruff/resources/test/fixtures/flake8_2020/YTT203.py

@@ -0,0 +1,5 @@
+import sys
+from sys import version_info
+
+sys.version_info[1] >= 5
+version_info[1] < 6

crates/ruff/resources/test/fixtures/flake8_2020/YTT204.py

@@ -0,0 +1,5 @@
+import sys
+from sys import version_info
+
+sys.version_info.minor <= 7
+version_info.minor > 8

crates/ruff/resources/test/fixtures/flake8_2020/YTT301.py

@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+py_major = sys.version[0]
+py_major = version[0]

crates/ruff/resources/test/fixtures/flake8_2020/YTT302.py

@@ -0,0 +1,8 @@
+import sys
+from sys import version
+
+version < "3"
+sys.version < "3"
+sys.version <= "3"
+sys.version > "3"
+sys.version >= "3"

crates/ruff/resources/test/fixtures/flake8_2020/YTT303.py

@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+print(sys.version[:1])
+print(version[:1])

crates/ruff/resources/test/fixtures/flake8_annotations/allow_nested_overload.py

@@ -0,0 +1,9 @@
+class C:
+    from typing import overload
+
+    @overload
+    def f(self, x: int, y: int) -> None:
+        ...
+
+    def f(self, x, y):
+        pass

crates/ruff/resources/test/fixtures/flake8_annotations/allow_overload.py

@@ -0,0 +1,49 @@
+from typing import overload
+
+
+@overload
+def foo(i: int) -> "int":
+    ...
+
+
+@overload
+def foo(i: "str") -> "str":
+    ...
+
+
+def foo(i):
+    return i
+
+
+@overload
+def bar(i: int) -> "int":
+    ...
+
+
+@overload
+def bar(i: "str") -> "str":
+    ...
+
+
+class X:
+    def bar(i):
+        return i
+
+
+# TODO(charlie): This third case should raise an error (as in Mypy), because we have a
+# statement between the interfaces and implementation.
+@overload
+def baz(i: int) -> "int":
+    ...
+
+
+@overload
+def baz(i: "str") -> "str":
+    ...
+
+
+x = 1
+
+
+def baz(i):
+    return i

crates/ruff/resources/test/fixtures/flake8_annotations/allow_star_arg_any.py

@@ -0,0 +1,57 @@
+from typing import Any
+
+
+# OK
+def foo(a: int, *args: str, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: Any, *args: str, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: str, **kwargs: str) -> Any:
+    pass
+
+
+# OK
+def foo(a: int, *args: Any, **kwargs: Any) -> int:
+    pass
+
+
+# OK
+def foo(a: int, *args: Any, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: str, **kwargs: Any) -> int:
+    pass
+
+
+class Bar:
+    # OK
+    def foo_method(self, a: int, *params: str, **options: str) -> int:
+        pass
+
+    # ANN401
+    def foo_method(self, a: Any, *params: str, **options: str) -> int:
+        pass
+
+    # ANN401
+    def foo_method(self, a: int, *params: str, **options: str) -> Any:
+        pass
+
+    # OK
+    def foo_method(self, a: int, *params: Any, **options: Any) -> int:
+        pass
+
+    # OK
+    def foo_method(self, a: int, *params: Any, **options: str) -> int:
+        pass
+
+    # OK
+    def foo_method(self, a: int, *params: str, **options: Any) -> int:
+        pass

crates/ruff/resources/test/fixtures/flake8_annotations/annotation_presence.py

@@ -0,0 +1,154 @@
+from typing import Annotated, Any, Optional, Type, Union
+from typing_extensions import override
+
+# Error
+def foo(a, b):
+    pass
+
+
+# Error
+def foo(a: int, b):
+    pass
+
+
+# Error
+def foo(a: int, b) -> int:
+    pass
+
+
+# Error
+def foo(a: int, b: int):
+    pass
+
+
+# Error
+def foo():
+    pass
+
+
+# OK
+def foo(a: int, b: int) -> int:
+    pass
+
+
+# OK
+def foo() -> int:
+    pass
+
+
+# OK
+def foo(a: int, *args: str, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: Any, *args: str, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: str, **kwargs: str) -> Any:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: Any, **kwargs: Any) -> int:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: Any, **kwargs: str) -> int:
+    pass
+
+
+# ANN401
+def foo(a: int, *args: str, **kwargs: Any) -> int:
+    pass
+
+
+class Foo:
+    # OK
+    def foo(self: "Foo", a: int, b: int) -> int:
+        pass
+
+    # ANN101
+    def foo(self, a: int, b: int) -> int:
+        pass
+
+    # ANN401
+    def foo(self: "Foo", a: Any, *params: str, **options: str) -> int:
+        pass
+
+    # ANN401
+    def foo(self: "Foo", a: int, *params: str, **options: str) -> Any:
+        pass
+
+    # ANN401
+    def foo(self: "Foo", a: int, *params: Any, **options: Any) -> int:
+        pass
+
+    # ANN401
+    def foo(self: "Foo", a: int, *params: Any, **options: str) -> int:
+        pass
+
+    # ANN401
+    def foo(self: "Foo", a: int, *params: str, **options: Any) -> int:
+        pass
+
+    # OK
+    @override
+    def foo(self: "Foo", a: Any, *params: str, **options: str) -> int:
+        pass
+
+    # OK
+    @override
+    def foo(self: "Foo", a: int, *params: str, **options: str) -> Any:
+        pass
+
+    # OK
+    @override
+    def foo(self: "Foo", a: int, *params: Any, **options: Any) -> int:
+        pass
+
+    # OK
+    @override
+    def foo(self: "Foo", a: int, *params: Any, **options: str) -> int:
+        pass
+
+    # OK
+    @override
+    def foo(self: "Foo", a: int, *params: str, **options: Any) -> int:
+        pass
+
+    # OK
+    @classmethod
+    def foo(cls: Type["Foo"], a: int, b: int) -> int:
+        pass
+
+    # ANN102
+    @classmethod
+    def foo(cls, a: int, b: int) -> int:
+        pass
+
+    # ANN101
+    def foo(self, /, a: int, b: int) -> int:
+        pass
+
+
+# OK
+def f(*args: *tuple[int]) -> None: ...
+def f(a: object) -> None: ...
+def f(a: str | bytes) -> None: ...
+def f(a: Union[str, bytes]) -> None: ...
+def f(a: Optional[str]) -> None: ...
+def f(a: Annotated[str, ...]) -> None: ...
+def f(a: "Union[str, bytes]") -> None: ...
+def f(a: int + int) -> None: ...
+
+# ANN401
+def f(a: Any | int) -> None: ...
+def f(a: int | Any) -> None: ...
+def f(a: Union[str, bytes, Any]) -> None: ...
+def f(a: Optional[Any]) -> None: ...
+def f(a: Annotated[Any, ...]) -> None: ...
+def f(a: "Union[str, bytes, Any]") -> None: ...

crates/ruff/resources/test/fixtures/flake8_annotations/ignore_fully_untyped.py

@@ -0,0 +1,44 @@
+"""Test case expected to be run with `ignore_fully_untyped = True`."""
+
+
+def ok_fully_untyped_1(a, b):
+    pass
+
+
+def ok_fully_untyped_2():
+    pass
+
+
+def ok_fully_typed_1(a: int, b: int) -> int:
+    pass
+
+
+def ok_fully_typed_2() -> int:
+    pass
+
+
+def ok_fully_typed_3(a: int, *args: str, **kwargs: str) -> int:
+    pass
+
+
+def error_partially_typed_1(a: int, b):
+    pass
+
+
+def error_partially_typed_2(a: int, b) -> int:
+    pass
+
+
+def error_partially_typed_3(a: int, b: int):
+    pass
+
+
+class X:
+    def ok_untyped_method_with_arg(self, a):
+        pass
+
+    def ok_untyped_method(self):
+        pass
+
+    def error_typed_self(self: X):
+        pass

crates/ruff/resources/test/fixtures/flake8_annotations/mypy_init_return.py

@@ -0,0 +1,48 @@
+"""Test case expected to be run with `mypy_init_return = True`."""
+
+# Error
+class Foo:
+    def __init__(self):
+        ...
+
+
+# Error
+class Foo:
+    def __init__(self, foo):
+        ...
+
+
+# OK
+class Foo:
+    def __init__(self, foo) -> None:
+        ...
+
+
+# OK
+class Foo:
+    def __init__(self) -> None:
+        ...
+
+
+# OK
+class Foo:
+    def __init__(self, foo: int):
+        ...
+
+
+# OK
+class Foo:
+    def __init__(self, foo: int) -> None:
+        ...
+
+
+# Error
+def __init__(self, foo: int):
+    ...
+
+
+# Error – used to be ok for a moment since the mere presence
+# of a vararg falsely indicated that the function has a typed argument.
+class Foo:
+    def __init__(self, *arg):
+        ...

crates/ruff/resources/test/fixtures/flake8_annotations/simple_magic_methods.py

@@ -0,0 +1,42 @@
+class Foo:
+    def __str__(self):
+        ...
+
+    def __repr__(self):
+        ...
+
+    def __len__(self):
+        ...
+
+    def __length_hint__(self):
+        ...
+
+    def __init__(self):
+        ...
+
+    def __del__(self):
+        ...
+
+    def __bool__(self):
+        ...
+
+    def __bytes__(self):
+        ...
+
+    def __format__(self, format_spec):
+        ...
+
+    def __contains__(self, item):
+        ...
+
+    def __complex__(self):
+        ...
+
+    def __int__(self):
+        ...
+
+    def __float__(self):
+        ...
+
+    def __index__(self):
+        ...

crates/ruff/resources/test/fixtures/flake8_annotations/suppress_dummy_args.py

@@ -0,0 +1,26 @@
+"""Test case expected to be run with `suppress_dummy_args = True`."""
+
+# OK
+def foo(_) -> None:
+    ...
+
+
+# OK
+def foo(*_) -> None:
+    ...
+
+
+# OK
+def foo(**_) -> None:
+    ...
+
+
+# OK
+def foo(a: int, _) -> None:
+    ...
+
+
+# OK
+def foo() -> None:
+    def bar(_) -> None:
+        ...

crates/ruff/resources/test/fixtures/flake8_annotations/suppress_none_returning.py

@@ -0,0 +1,60 @@
+"""Test case expected to be run with `suppress_none_returning = True`."""
+
+# OK
+def foo():
+    a = 2 + 2
+
+
+# OK
+def foo():
+    return
+
+
+# OK
+def foo():
+    return None
+
+
+# OK
+def foo():
+    a = 2 + 2
+    if a == 4:
+        return
+    else:
+        return
+
+
+# OK
+def foo():
+    a = 2 + 2
+    if a == 4:
+        return None
+    else:
+        return
+
+
+# OK
+def foo():
+    def bar() -> bool:
+        return True
+
+    bar()
+
+
+# Error
+def foo():
+    return True
+
+
+# Error
+def foo():
+    a = 2 + 2
+    if a == 4:
+        return True
+    else:
+        return
+
+
+# Error (on the argument, but not the return type)
+def foo(a):
+    a = 2 + 2

crates/ruff/resources/test/fixtures/flake8_async/ASYNC100.py

@@ -0,0 +1,23 @@
+import urllib.request
+import requests
+import httpx
+
+
+async def foo():
+    urllib.request.urlopen("http://example.com/foo/bar").read()
+
+
+async def foo():
+    requests.get()
+
+
+async def foo():
+    httpx.get()
+
+
+async def foo():
+    requests.post()
+
+
+async def foo():
+    httpx.post()

crates/ruff/resources/test/fixtures/flake8_async/ASYNC101.py

@@ -0,0 +1,31 @@
+import os
+import subprocess
+import time
+
+
+async def foo():
+    open("foo")
+
+
+async def foo():
+    time.sleep(1)
+
+
+async def foo():
+    subprocess.run("foo")
+
+
+async def foo():
+    subprocess.call("foo")
+
+
+async def foo():
+    subprocess.foo(0)
+
+
+async def foo():
+    os.wait4(10)
+
+
+async def foo():
+    os.wait(12)

crates/ruff/resources/test/fixtures/flake8_async/ASYNC102.py

@@ -0,0 +1,13 @@
+import os
+
+
+async def foo():
+    os.popen()
+
+
+async def foo():
+    os.spawnl()
+
+
+async def foo():
+    os.fspath("foo")

crates/ruff/resources/test/fixtures/flake8_bandit/S101.py

@@ -0,0 +1,13 @@
+assert True  # S101
+
+
+def fn():
+    x = 1
+    assert x == 1  # S101
+    assert x == 2  # S101
+
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    assert True  # OK

crates/ruff/resources/test/fixtures/flake8_bandit/S102.py

@@ -0,0 +1,5 @@
+def fn():
+    # Error
+    exec('x = 2')
+
+exec('y = 3')

crates/ruff/resources/test/fixtures/flake8_bandit/S103.py

@@ -0,0 +1,22 @@
+import os
+import stat
+
+keyfile = "foo"
+
+os.chmod("/etc/passwd", 0o227)  # Error
+os.chmod("/etc/passwd", 0o7)  # Error
+os.chmod("/etc/passwd", 0o664)  # OK
+os.chmod("/etc/passwd", 0o777)  # Error
+os.chmod("/etc/passwd", 0o770)  # Error
+os.chmod("/etc/passwd", 0o776)  # Error
+os.chmod("/etc/passwd", 0o760)  # OK
+os.chmod("~/.bashrc", 511)  # Error
+os.chmod("/etc/hosts", 0o777)  # Error
+os.chmod("/tmp/oh_hai", 0x1FF)  # Error
+os.chmod("/etc/passwd", stat.S_IRWXU)  # OK
+os.chmod(keyfile, 0o777)  # Error
+os.chmod(keyfile, 0o7 | 0o70 | 0o700)  # Error
+os.chmod(keyfile, stat.S_IRWXO | stat.S_IRWXG | stat.S_IRWXU)  # Error
+os.chmod("~/hidden_exec", stat.S_IXGRP)  # Error
+os.chmod("~/hidden_exec", stat.S_IXOTH)  # OK
+os.chmod("/etc/passwd", stat.S_IWOTH)  # Error

crates/ruff/resources/test/fixtures/flake8_bandit/S104.py

@@ -0,0 +1,19 @@
+def func(address):
+    print(address)
+
+
+# OK
+"OK"
+
+# Error
+"0.0.0.0"
+'0.0.0.0'
+
+
+# Error
+func("0.0.0.0")
+
+
+def my_func():
+    x = "0.0.0.0"
+    print(x)

crates/ruff/resources/test/fixtures/flake8_bandit/S105.py

@@ -0,0 +1,77 @@
+d = {}
+
+# OK
+safe = "s3cr3t"
+password = True
+password = safe
+password = ""
+password is True
+password == 1
+d["safe"] = "s3cr3t"
+
+# Errors
+password = "s3cr3t"
+_pass = "s3cr3t"
+passwd = "s3cr3t"
+pwd = "s3cr3t"
+secret = "s3cr3t"
+token = "s3cr3t"
+secrete = "s3cr3t"
+safe = password = "s3cr3t"
+password = safe = "s3cr3t"
+PASSWORD = "s3cr3t"
+PassWord = "s3cr3t"
+
+d["password"] = "s3cr3t"
+d["pass"] = "s3cr3t"
+d["passwd"] = "s3cr3t"
+d["pwd"] = "s3cr3t"
+d["secret"] = "s3cr3t"
+d["token"] = "s3cr3t"
+d["secrete"] = "s3cr3t"
+safe = d["password"] = "s3cr3t"
+d["password"] = safe = "s3cr3t"
+
+
+class MyClass:
+    password = "s3cr3t"
+    safe = password
+
+
+MyClass.password = "s3cr3t"
+MyClass._pass = "s3cr3t"
+MyClass.passwd = "s3cr3t"
+MyClass.pwd = "s3cr3t"
+MyClass.secret = "s3cr3t"
+MyClass.token = "s3cr3t"
+MyClass.secrete = "s3cr3t"
+
+password == "s3cr3t"
+_pass == "s3cr3t"
+passwd == "s3cr3t"
+pwd == "s3cr3t"
+secret == "s3cr3t"
+token == "s3cr3t"
+secrete == "s3cr3t"
+password == safe == "s3cr3t"
+
+if token == "1\n2":
+    pass
+
+if token == "3\t4":
+    pass
+
+if token == "5\r6":
+    pass
+
+
+# These should not be flagged
+passed_msg = "You have passed!"
+compassion = "Please don't match!"
+impassable = "You shall not pass!"
+passwords = ""
+PASSWORDS = ""
+passphrases = ""
+PassPhrases = ""
+tokens = ""
+secrets = ""

crates/ruff/resources/test/fixtures/flake8_bandit/S106.py

@@ -0,0 +1,14 @@
+def func(pos, password):
+    pass
+
+
+string = "Hello World"
+
+# OK
+func("s3cr3t")
+func(1, password=string)
+func(1, password="")
+func(pos="s3cr3t", password=string)
+
+# Error
+func(1, password="s3cr3t")

crates/ruff/resources/test/fixtures/flake8_bandit/S107.py

@@ -0,0 +1,34 @@
+def ok(first, default="default"):
+    pass
+
+
+def default(first, password="default"):
+    pass
+
+
+def ok_posonly(first, /, pos, default="posonly"):
+    pass
+
+
+def default_posonly(first, /, pos, password="posonly"):
+    pass
+
+
+def ok_kwonly(first, *, default="kwonly"):
+    pass
+
+
+def default_kwonly(first, *, password="kwonly"):
+    pass
+
+
+def ok_all(first, /, pos, default="posonly", *, kwonly="kwonly"):
+    pass
+
+
+def default_all(first, /, pos, secret="posonly", *, password="kwonly"):
+    pass
+
+
+def ok_empty(first, password=""):
+    pass

crates/ruff/resources/test/fixtures/flake8_bandit/S108.py

@@ -0,0 +1,16 @@
+# ok
+with open("/abc/tmp", "w") as f:
+    f.write("def")
+
+with open("/tmp/abc", "w") as f:
+    f.write("def")
+
+with open("/var/tmp/123", "w") as f:
+    f.write("def")
+
+with open("/dev/shm/unit/test", "w") as f:
+    f.write("def")
+
+# not ok by config
+with open("/foo/bar", "w") as f:
+    f.write("def")

crates/ruff/resources/test/fixtures/flake8_bandit/S110.py

@@ -0,0 +1,14 @@
+try:
+    pass
+except Exception:
+    pass
+
+try:
+    pass
+except:
+    pass
+
+try:
+    pass
+except ValueError:
+    pass

crates/ruff/resources/test/fixtures/flake8_bandit/S112.py

@@ -0,0 +1,29 @@
+try:
+    pass
+except Exception:
+    continue
+
+try:
+    pass
+except:
+    continue
+
+try:
+    pass
+except (Exception,):
+    continue
+
+try:
+    pass
+except (Exception, ValueError):
+    continue
+
+try:
+    pass
+except ValueError:
+    continue
+
+try:
+    pass
+except (ValueError,):
+    continue

crates/ruff/resources/test/fixtures/flake8_bandit/S113.py

@@ -0,0 +1,23 @@
+import requests
+
+requests.get('https://gmail.com')
+requests.get('https://gmail.com', timeout=None)
+requests.get('https://gmail.com', timeout=5)
+requests.post('https://gmail.com')
+requests.post('https://gmail.com', timeout=None)
+requests.post('https://gmail.com', timeout=5)
+requests.put('https://gmail.com')
+requests.put('https://gmail.com', timeout=None)
+requests.put('https://gmail.com', timeout=5)
+requests.delete('https://gmail.com')
+requests.delete('https://gmail.com', timeout=None)
+requests.delete('https://gmail.com', timeout=5)
+requests.patch('https://gmail.com')
+requests.patch('https://gmail.com', timeout=None)
+requests.patch('https://gmail.com', timeout=5)
+requests.options('https://gmail.com')
+requests.options('https://gmail.com', timeout=None)
+requests.options('https://gmail.com', timeout=5)
+requests.head('https://gmail.com')
+requests.head('https://gmail.com', timeout=None)
+requests.head('https://gmail.com', timeout=5)

crates/ruff/resources/test/fixtures/flake8_bandit/S301.py

@@ -0,0 +1,3 @@
+import pickle
+
+pickle.loads()

crates/ruff/resources/test/fixtures/flake8_bandit/S307.py

@@ -0,0 +1,12 @@
+import os
+
+print(eval("1+1"))  # S307
+print(eval("os.getcwd()"))  # S307
+
+
+class Class(object):
+    def eval(self):
+        print("hi")
+
+    def foo(self):
+        self.eval()  # OK

crates/ruff/resources/test/fixtures/flake8_bandit/S312.py

@@ -0,0 +1,3 @@
+from telnetlib import Telnet
+
+Telnet("localhost", 23)