ruff-action

A GitHub Action to run ruff.

This action is commonly used as a pass/fail test to ensure your repository stays clean, abiding the rules specified in your configuration. Though it runs ruff check by default, the action can do anything ruff can (ex, fix).

Contents

• Usage
  • Basic
  • Specify a different source directory
  • Specify multiple files
  • Use to install ruff
  • Use ruff format
  • Install specific versions
    • Install the latest version
    • Install a specific version
    • Install a version by supplying a semver range or pep440 specifier
    • Install a version from a specified version file
    • Install using a custom manifest URL
  • Validate checksum
  • GitHub authentication token
• Outputs

Usage

Input	Description	Default
version	The version of Ruff to install. See Install specific versions	discovered from pyproject.toml, else latest
version-file	The file to read the version from. See Install a version from a specified version file	None
manifest-file	URL to a custom Ruff manifest in the astral-sh/versions format.	None
download-from-astral-mirror	Download Ruff from the Astral mirror instead of directly from GitHub Releases.	true
args	The arguments to pass to the ruff command. See Configuring Ruff	check
src	Source path(s) to run ruff on. Supports glob patterns.	github.workspace
checksum	The sha256 checksum of the downloaded artifact.	None
github-token	The GitHub token to use when downloading Ruff release artifacts from GitHub.	GITHUB_TOKEN

By default, Ruff version metadata is resolved from the astral-sh/versions Ruff manifest.

Basic

- uses: astral-sh/ruff-action@v4.1.0

Specify a different source directory

- uses: astral-sh/ruff-action@v4.1.0
  with:
    src: "./src"

Specify multiple files

Separate multiple src values with whitespace.

- uses: astral-sh/ruff-action@v4.1.0
  with:
    src: >-
      path/to/file1.py
      path/to/file2.py

Use glob patterns

Glob patterns (*, ?, [...], and **) are expanded by the action using @actions/glob, so they work consistently across Linux, macOS, and Windows runners. This action does not emulate Bash, PowerShell, or other shell-specific glob expansion.

Hidden files and directories are skipped by default; target them explicitly, for example with .venv/**/*.py, to include them. If a pattern does not match any files, the original pattern is passed to Ruff so Ruff can report the missing path. Literal glob metacharacters in file or directory names must be escaped using @actions/glob syntax.

- uses: astral-sh/ruff-action@v4.1.0
  with:
    src: "src/**/*.py"

Note

When using multiple patterns, only the first is used to search for pyproject.toml to determine the Ruff version. Use the version input for explicit control. Large glob expansions may hit command-line length limits, especially on Windows.

Use to install ruff

This action adds ruff to the PATH, so you can use it in subsequent steps.

- uses: astral-sh/ruff-action@v4.1.0
- run: ruff check --fix
- run: ruff format

By default, this action runs ruff check after installation. If you do not want to run any ruff command but only install it, you can use the args input to overwrite the default value (check):

- name: Install ruff without running check or format
  uses: astral-sh/ruff-action@v4.1.0
  with:
    args: "--version"

Use ruff format

- uses: astral-sh/ruff-action@v4.1.0
  with:
    args: "format --check --diff"

Install specific versions

By default this action searches upward from src until the workspace root to find the nearest pyproject.toml and determine the Ruff version to install. If no pyproject.toml file is found, or no Ruff version is defined in project.dependencies, project.optional-dependencies, dependency-groups, or supported Poetry dependency tables, the latest version is installed.

Note

This action does only support ruff versions v0.0.247 and above.

Install the latest version

- name: Install the latest version of ruff
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: "latest"

Install a specific version

- name: Install a specific version of ruff
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: "0.4.4"

Install a version by supplying a semver range or pep440 specifier

You can specify a semver range or pep440 specifier to install the latest version that satisfies the range.

- name: Install a semver range of ruff
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: ">=0.4.0"

- name: Pinning a minor version of ruff
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: "0.4.x"

- name: Install a pep440-specifier-satisfying version of ruff
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: ">=0.11.10,<0.12.0"

Install a version from a specified version file

You can specify a file to read the version from. Currently pyproject.toml, requirements.txt and uv.lock are supported. If the file cannot be parsed or does not contain a Ruff version, the action warns and falls back to latest.

- name: Install a version from a specified version file
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version-file: "my-path/to/pyproject.toml-requirements.txt-or-uv.lock"

Version resolution precedence is:

1. version
2. version-file
3. nearest discoverable pyproject.toml found by searching upward from src
4. latest

Install using a custom manifest URL

You can override the default astral-sh/versions manifest with manifest-file. This affects both version resolution and artifact selection.

- name: Install Ruff from a custom manifest
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: "latest"
    manifest-file: "https://example.com/ruff.ndjson"

Validate checksum

You can specify a checksum to validate the downloaded executable. Checksums up to the default version are automatically verified by this action. The sha256 hashes can be found on the releases page of the ruff repo.

- name: Install a specific version and validate the checksum
  uses: astral-sh/ruff-action@v4.1.0
  with:
    version: "0.7.4"
    checksum: "0de731c669b9ece77e799ac3f4a160c30849752714d9775c94cc4cfaf326860c"

GitHub authentication token

By default, this action resolves available Ruff versions from astral-sh/versions and downloads release artifacts from https://releases.astral.sh. If this fails this action falls back to downloading from the GitHub releases page of the Ruff repository.

Set download-from-astral-mirror to false to skip the Astral mirror and download directly from GitHub Releases.

You can provide a token via github-token to authenticate GitHub Releases downloads. By default, the GITHUB_TOKEN secret is used, which is automatically provided by GitHub Actions.

If the default permissions for the GitHub token are not sufficient, you can provide a custom GitHub token with the necessary permissions.

- name: Install the latest version of ruff with a custom GitHub token
  uses: astral-sh/ruff-action@v4.1.0
  with:
    github-token: ${{ secrets.CUSTOM_GITHUB_TOKEN }}

Outputs

Output	Description
ruff-version	The version of Ruff that was installed.