ruff skill

2026-06-20 17:25:47 -05:00
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+# Ruff Source Documentation
+
+Use this reference when implementing or tuning Ruff in repositories.
+
+## Core Docs
+
+- [Ruff overview](https://docs.astral.sh/ruff/)
+- [Rules reference](https://docs.astral.sh/ruff/rules/)
+- [Settings reference](https://docs.astral.sh/ruff/settings/)
+- [Formatter docs](https://docs.astral.sh/ruff/formatter/)
+- [The Ruff linter](https://docs.astral.sh/ruff/linter/)
+
+## Migration And Integration
+
+- [Migrating from Black](https://docs.astral.sh/ruff/formatter/#migrating-from-black)
+- [Migrating from Flake8](https://docs.astral.sh/ruff/linter/#migrating-from-flake8)
+- [Migrating from isort](https://docs.astral.sh/ruff/formatter/#sorting-imports)
+- [Pre-commit integration](https://docs.astral.sh/ruff/integrations/#pre-commit)
+- [GitHub Actions integration](https://docs.astral.sh/ruff/integrations/#github-actions)
+
+## Python Packaging Context
+
+- [PEP 621 project metadata in pyproject.toml](https://peps.python.org/pep-0621/)
+- [uv project and workflow docs](https://docs.astral.sh/uv/)
+
+## Suggested Reading Order
+
+1. Overview and settings.
+2. Rules and linter behavior.
+3. Formatter and migration references.
+4. CI and pre-commit integration notes.
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+# Ruff Integrations: Tooling Patterns
+
+Use this page when wiring Ruff into local developer workflows and CI.
+
+## Scope
+
+This reference covers:
+
+1. [pre-commit](https://pre-commit.com/) hooks for local and pre-push enforcement.
+2. [GitHub Actions](https://docs.github.com/en/actions) checks for pull request and branch protection gates.
+
+For Ruff-specific flags and settings, see [Ruff docs](./ruff-docs.md).
+
+## pre-commit Integration
+
+### Why use it
+
+Use pre-commit when you want fast feedback before code reaches CI and consistent checks across contributors.
+
+### Add hooks
+
+Create or update [.pre-commit-config.yaml](https://pre-commit.com/#2-add-a-pre-commit-configuration) with Ruff hooks from [astral-sh/ruff-pre-commit](https://github.com/astral-sh/ruff-pre-commit):
+
+```yaml title=".pre-commit-config.yaml"
+repos:
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.15.18
+    hooks:
+      - id: ruff-check
+        args: [--fix]
+      - id: ruff-format
+```
+
+Pin the hook revision and update intentionally during dependency maintenance.
+
+### Install and run
+
+```bash
+uv run pre-commit install
+uv run pre-commit run --all-files
+```
+
+If the project does not manage pre-commit via uv, use your standard Python environment installation path.
+
+### Recommended policy
+
+1. Keep auto-fix enabled locally with ruff-check --fix.
+2. Keep CI in check-only mode so violations fail loudly.
+3. Run hooks on all files in migration PRs to avoid drift.
+
+## GitHub Actions Integration
+
+### Why use it
+
+Use GitHub Actions when you need required status checks on pull requests and a single source of truth for lint and format gates.
+
+### Minimal workflow
+
+Create [.github/workflows/ruff.yml](https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions):
+
+```yaml title=".github/workflows/ruff.yml"
+name: Ruff
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v8.2.0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install project dependencies
+        run: uv sync --dev
+
+      - name: Ruff lint
+        run: uv run ruff check .
+
+      - name: Ruff format check
+        run: uv run ruff format --check .
+```
+
+### Alternative: official Ruff action
+
+If you want an action-focused setup, see [Ruff GitHub Actions integration](https://docs.astral.sh/ruff/integrations/#github-actions). The official Ruff action is commonly used pinned at `astral-sh/ruff-action@v4.0.0`. Keep behavior equivalent to local commands so results do not diverge.
+
+## Alignment Checklist
+
+Keep local hooks and CI checks aligned:
+
+1. Same rule set from pyproject.toml.
+2. Same target Python version and dependency graph.
+3. Clear developer remediation command in docs:
+   - uv run ruff check . --fix
+   - uv run ruff format .
+
+## Troubleshooting
+
+### Hook passes locally but CI fails
+
+1. Ensure CI uses the same pyproject.toml and not a stale cache.
+2. Confirm matching Ruff versions in local and CI environments.
+3. Verify CI is not running on a different Python target than local config.
+
+### CI is slow
+
+1. Keep Ruff in a dedicated job so failures return early.
+2. Use dependency caching from your package workflow.
+3. Avoid running both legacy linters and Ruff after migration completion.
+
+## Source Links
+
+- [Ruff integrations](https://docs.astral.sh/ruff/integrations/)
+- [Ruff pre-commit docs](https://docs.astral.sh/ruff/integrations/#pre-commit)
+- [Ruff GitHub Actions docs](https://docs.astral.sh/ruff/integrations/#github-actions)
+- [pre-commit official docs](https://pre-commit.com/)
+- [GitHub Actions documentation](https://docs.github.com/en/actions)