name: "Cache uv downloads"
description: >-
  Restore the uv download cache on every run and save it only from main, so pull
  requests reuse main's cache instead of evicting it with their own copies.

runs:
  using: composite
  steps:
    - name: Restore and save the uv download cache
      if: github.ref == 'refs/heads/main'
      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
      with:
        path: ${{ env.UV_CACHE_DIR }}
        key: ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-${{ hashFiles('uv.lock') }}
        restore-keys: |
          ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-

    - name: Restore the uv download cache
      if: github.ref != 'refs/heads/main'
      uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
      with:
        path: ${{ env.UV_CACHE_DIR }}
        key: ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-${{ hashFiles('uv.lock') }}
        restore-keys: |
          ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-