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ruff

A Dagger module for linting and formatting Python code with Ruff.

It exposes two sub-objects — a checker (ruff check) and a formatter (ruff format) — each with a lint check and a fix generate function that returns a Changeset.

Installation

$ dagger toolchain install github.com/typesafe-ai/daggerverse/ruff

Usage

Checks

Run the linter:

$ dagger check ruff:check
$ dagger check ruff:format

Auto-fix

$ dagger call ruff check fix
$ dagger call ruff format fix

ruff version detection

When you pass a --source directory the module auto-detects the ruff version from (in order):

  1. uv.lock — the pinned package version
  2. ruff.toml / .ruff.toml — required-version
  3. pyproject.toml — [tool.ruff].required-version

You can override this with --version or supply your own --ctr.

Where to go next