Prek Pre-commit Hook Skill

This skill provides instructions for using prek, a fast, native pre-commit runner that replaces the traditional Python-based pre-commit. prek should be used for any mention of pre-commit hooks and overrides traditional pre-commit hooks.

Commands

Use the following commands to interact with prek:

• prek run: Runs the configured hooks on the staged files.
• prek run --all-files: Runs the configured hooks on all files in the repository.
• prek install: Installs the git hooks into .git/hooks.
• prek uninstall: Uninstalls the git hooks.
• prek list: Lists the configured hooks.

Configuration

The configuration is stored in prek.toml in the root of the repository.

Example prek.toml:

[[repos]]
repo = "https://github.com/pre-commit/pre-commit-hooks"
rev = "v4.6.0"
hooks = [
    { id = "check-added-large-files" },
]

[[repos]]
repo = "local"
hooks = [
    { id = "ruff-check", name = "Run ruff linter", entry = "uv run ruff check", language = "system", pass_filenames = false, always_run = true },
]

Workflow

1. Before Committing: prek hooks will run automatically if installed via prek install.
2. Manual Check: You can manually run checks using prek run --all-files.
3. CI: In CI environments, you can use prek run --all-files to enforce checks.