name: "Setup Haskell"
description: "Setup Haskell"
inputs:
  ghc-version:
    required: false
    description: 'Version of GHC to use. If set to "latest", it will always get the latest stable version.'
    default: "latest"
  cabal-version:
    required: false
    description: 'Version of Cabal to use. If set to "latest", it will always get the latest stable version.'
    default: "latest"
  cabal-project-file:
    required: false
    description: 'Path to the project configuration. Defaults to "cabal.project".'
    default: "cabal.project"
  cabal-project-freeze-file:
    required: false
    description: 'Path to project freeze file. Defaults to "cabal.project.freeze".'
    default: "cabal.project.freeze"
runs:
  using: "composite"
  steps:
    - name: Workaround runner image issue
      if: runner.os == 'Linux'
      # https://github.com/actions/runner-images/issues/7061
      run: sudo chown -R $USER /usr/local/.ghcup
      shell: sh

    - name: Setup Haskell
      uses: haskell-actions/setup@v2
      id: setup-haskell
      with:
        ghc-version: ${{ inputs.ghc-version }}
        cabal-version: ${{ inputs.cabal-version }}

    - name: Cache Haskell dependencies
      uses: actions/cache@v3
      with:
        path: |
          ${{ steps.setup-haskell.outputs.cabal-store }}
          dist-newstyle
        key: haskell-${{ runner.os }}-${{ inputs.ghc-version }}-${{ hashFiles(inputs.cabal-freeze-file) }}
        restore-keys: haskell-${{ runner.os }}-${{ inputs.ghc-version }}-