name: Setup Rust cache

description: Configure the rust-cache workflow.

inputs:
  key:
    description: Additional caching key
    required: false
    default:

runs:
  using: composite
  steps:
    - name: Setup Rust cache
      uses: Swatinem/rust-cache@v2
      with:
        # Only save the cache on the main branch to avoid PRs filling
        # up the cache.
        save-if: ${{ github.ref == 'refs/heads/main' }}
        # Further, save the cache per key - e.g. language grouping.
        key: ${{ inputs.key }}