esphome/.github/actions/restore-python/action.yml

name: Restore Python
inputs:
  python-version:
    description: Python version to restore
    required: true
    type: string
  cache-key:
    description: Cache key to use
    required: true
    type: string
outputs:
  python-version:
    description: Python version restored
    value: ${{ steps.python.outputs.python-version }}
runs:
  using: "composite"
  steps:
    - name: Set up Python ${{ inputs.python-version }}
      id: python
      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
      with:
        python-version: ${{ inputs.python-version }}
    - name: Restore Python virtual environment
      id: cache-venv
      uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
      with:
        path: venv
        # yamllint disable-line rule:line-length
        key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv-${{ inputs.cache-key }}
    - name: Set up uv
      # Only needed on cache miss to populate the venv. ``uv pip install``
      # detects the activated venv via ``VIRTUAL_ENV`` so the venv layout
      # downstream jobs rely on is preserved.
      if: steps.cache-venv.outputs.cache-hit != 'true'
      uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
      with:
        enable-cache: true
        # Pin uv version so the action does not have to fetch the
        # manifest from raw.githubusercontent.com on every cache
        # miss; that fetch flakes on Windows runners.
        version: "0.11.15"
    - name: Create Python virtual environment
      if: steps.cache-venv.outputs.cache-hit != 'true' && runner.os != 'Windows'
      shell: bash
      run: |
        python -m venv venv
        source venv/bin/activate
        python --version
        uv pip install -r requirements.txt -r requirements_test.txt
        uv pip install -e .
    - name: Create Python virtual environment
      if: steps.cache-venv.outputs.cache-hit != 'true' && runner.os == 'Windows'
      shell: bash
      run: |
        python -m venv venv
        source ./venv/Scripts/activate
        python --version
        uv pip install -r requirements.txt -r requirements_test.txt
        uv pip install -e .