chaos-jetzt-nixfiles/.github/workflows/build-systems.yaml

name: "Build system config"
on:
  pull_request:
  push:
jobs:
  avoid_duplicates:
    runs-on: ubuntu-latest
    outputs:
      should_skip: ${{ steps.skip_check.outputs.should_skip }}
    steps:
      - id: skip_check
        uses: fkirc/skip-duplicate-actions@v5
        with:
          # All of these options are optional, so you can remove them if you are happy with the defaults
          concurrent_skipping: 'same_content_newer'
          skip_after_successful_duplicate: 'true'
          do_not_skip: '["workflow_dispatch", "schedule"]'
  build:
    runs-on: ubuntu-latest
    needs: avoid_duplicates
    if: needs.avoid_duplicates.outputs.should_skip != 'true'
    steps:
    - uses: actions/checkout@v3
    - uses: cachix/install-nix-action@v20
      with:
        github_access_token: ${{ secrets.GITHUB_TOKEN }}
    - uses: cachix/cachix-action@v12
      with:
        name: chaos-jetzt-nixfiles
        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
    - name: nix flake check
      run: |
        nix flake check --no-build
        echo "## \`nix flake check\` succeeded" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
    - name: Discover nixosConfigurations
      run: |
        echo Discovered the following system configs
        nix flake show . --json | jq ".nixosConfigurations|keys[]" -r
    - name: Build systems
      run: |
        echo "## Builds succeeded" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "| Host | Out path |" >> $GITHUB_STEP_SUMMARY
        echo "| ---- | -------- |" >> $GITHUB_STEP_SUMMARY
        for host in $(nix flake show . --json | jq ".nixosConfigurations|keys[]" -r); do
          echo "::group::Building ${host}"
          drv=".#nixosConfigurations.$host.config.system.build.toplevel"
          build_cmd="nix build ${drv}"
          cachix watch-exec chaos-jetzt-nixfiles -- $build_cmd
          echo "::endgroup::"
          out_path=$($build_cmd --print-out-paths)
          echo -e "\x1b[32;1mSuccessfully built .#nixosConfigurations.${host}\x1b[0m"
          echo "| ${host} | \`${out_path}\` |" >> $GITHUB_STEP_SUMMARY
        done