name: "CI"
on:
  pull_request:
  push:
jobs:

  checks:
    strategy:
      matrix:
        check:
          - nixpkgs-fmt
          - deadnix
          - nur
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v22
      - name: Check ${{ matrix.check }}
        # Depends on nixos/nix#7759 to simply `nix flake check`
        run: nix run .#checks.$(nix eval --raw --impure --expr "builtins.currentSystem").${{ matrix.check }}

  build-and-update:
    strategy:
      matrix:
        # Set this to notify the global nur package registry that changes are
        # available.
        #
        # The repo name as used in
        # https://github.com/nix-community/NUR/blob/master/repos.json
        nurRepo:
          - xeals
        # Set this to cache your build results in cachix for faster builds
        # in CI and for everyone who uses your cache.
        #
        # Format: Your cachix cache host name without the ".cachix.org" suffix.
        # Example: mycache (for mycache.cachix.org)
        #
        # For this to work, you also need to set the CACHIX_SIGNING_KEY secret
        # in your repository settings in Github found at https://github.com/<your_githubname>/nur-packages/settings/secrets
        cachixName:
          - xeals
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3
    - name: Install nix
      uses: cachix/install-nix-action@v22
    - name: Show nixpkgs version
      run: nix eval --impure --expr '(import ./flake-compat.nix { src = ./.; }).lib.version'
    - name: Setup cachix
      uses: cachix/cachix-action@v12
      if: ${{ matrix.cachixName != '<YOUR_CACHIX_NAME>' }}
      with:
        name: ${{ matrix.cachixName }}
        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
    - name: Check nix
      run: nix flake check --show-trace
    - name: Build nix packages
      run: nix develop .#ci -c nix-build-uncached ci.nix -A cacheOutputs
    - name: Trigger NUR update
      if: ${{ matrix.nurRepo != '<YOUR_REPO_NAME>' }}
      run: curl -XPOST "https://nur-update.nix-community.org/update?repo=${{ matrix.nurRepo }}"