action.yml

name: Setup python

description: Setup python and install dependencies

inputs:
  python-version:
    description: "Python version (e.g. '3.7', '3.8.13', '3.11.0-alpha.1', '3.x')."
    required: true
  requirements:
    description: "Optional list of arguments passed to `uv pip install` (e.g. 'numpy==1.19.5', '-r requirements.txt')."
    required: false

runs:
  using: composite
  steps:
    # Install uv together with a uv-managed Python interpreter, and
    # create and activate a virtual environment that is used by all
    # subsequent steps (e.g. the `uv pip install` step below installs
    # into it). Also enables uv's built-in cache. The cache key takes
    # the platform, the uv version, and a hash of the files below
    # into account.
    # See https://docs.astral.sh/uv/guides/integration/github/ for details.
    # NOTE: setup-uv publishes immutable releases only (no
    #       floating major tags), so we pin the full version
    - name: Install uv and python
      uses: astral-sh/setup-uv@v9.0.0
      with:
        python-version: "${{ inputs.python-version }}"
        activate-environment: true
        enable-cache: true
        cache-suffix: "py${{ inputs.python-version }}"
        cache-dependency-glob: |
          pyproject.toml
          requirements/*.txt

    - name: Install requirements
      if: ${{ inputs.requirements != '' }}
      shell: bash
      run: uv pip install --verbose ${{ inputs.requirements }}