2.home-manager/.github/workflows/test.yml

name: Test
on:
  pull_request:
  schedule:
    - cron: "30 2 * * *"
concurrency:
  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.run_id }}
  cancel-in-progress: true
jobs:
  changes:
    runs-on: ubuntu-latest
    outputs:
      docs: ${{ steps.changes.outputs.docs }}
      format: ${{ steps.changes.outputs.format }}
      hm: ${{ steps.changes.outputs.hm }}
      tests: ${{ steps.changes.outputs.tests }}
    steps:
      - uses: actions/checkout@v4
      - uses: dorny/paths-filter@v3
        id: changes
        with:
          filters: |
            tests:
              - 'flake.lock'
              - 'flake.nix'
              - 'modules/**'
              - 'nix-darwin/**'
              - 'nixos/**'
              - 'tests/**'
            docs:
              - '**.md'
              - 'docs/**'
              - 'flake.lock'
              - 'flake.nix'
              - 'modules/**'
            format:
              - '**/*.nix'
            hm:
              - 'flake.lock'
              - 'flake.nix'
              - 'home-manager/**'
  get-test-chunks:
    runs-on: ubuntu-latest
    outputs:
      test-matrix: ${{ steps.chunks.outputs.test-matrix }}
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v31
        with:
          extra_nix_config: |
            experimental-features = nix-command flakes
      - name: Get test chunks
        id: chunks
        run: |
          linux_chunks=$(nix eval --json ./tests#packages.x86_64-linux --apply 'pkgs: builtins.attrNames (builtins.removeAttrs pkgs ["metadata"])' | jq -r '[.[] | select(startswith("test-chunk-")) | sub("test-chunk-"; "") | tonumber] | sort')
          echo "Found Linux chunks: $linux_chunks"

          darwin_chunks=$(nix eval --json ./tests#packages.aarch64-darwin --apply 'pkgs: builtins.attrNames (builtins.removeAttrs pkgs ["metadata"])' | jq -r '[.[] | select(startswith("test-chunk-")) | sub("test-chunk-"; "") | tonumber] | sort')
          echo "Found Darwin chunks: $darwin_chunks"

          matrix=$(jq -n -c \
            --argjson linux_chunks "$linux_chunks" \
            --argjson darwin_chunks "$darwin_chunks" \
            '{include: [($linux_chunks[] | {os: "ubuntu-latest", test_chunk: .}), ($darwin_chunks[] | {os: "macos-latest", test_chunk: .})]}')

          echo "test-matrix=$matrix" >> $GITHUB_OUTPUT
          echo "Generated matrix: $matrix"
  tests:
    needs: [changes, get-test-chunks]
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.get-test-chunks.outputs.test-matrix) }}
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - name: Get Nixpkgs revision from flake.lock
        id: get-nixpkgs
        run: |
          echo "rev=$(jq -r '.nodes.nixpkgs.locked.rev' flake.lock)" >> "$GITHUB_OUTPUT"
      - uses: cachix/install-nix-action@v31
        if: github.event_name == 'schedule' || needs.changes.outputs.docs == 'true' || needs.changes.outputs.tests == 'true' || needs.changes.outputs.hm == 'true' || needs.changes.outputs.format == 'true'
        with:
          nix_path: nixpkgs=https://github.com/NixOS/nixpkgs/archive/${{ steps.get-nixpkgs.outputs.rev }}.tar.gz
          extra_nix_config: |
            experimental-features = nix-command flakes
            max-jobs = auto
            cores = 0
      - name: Build docs
        if: matrix.os == 'ubuntu-latest' && matrix.test_chunk == 1 && (github.event_name == 'schedule' || needs.changes.outputs.docs == 'true')
        run: nix build --show-trace .#docs-jsonModuleMaintainers
      - name: Format Check
        if: matrix.os == 'ubuntu-latest' && matrix.test_chunk == 1 && (github.event_name == 'schedule' || needs.changes.outputs.format == 'true')
        run: nix fmt -- --ci
      - name: Test init --switch with locked inputs
        # FIXME: nix broken on darwin on unstable
        if: matrix.os == 'ubuntu-latest' && matrix.test_chunk == 1 && (github.event_name == 'schedule' || needs.changes.outputs.hm == 'true')
        run: |
          # Copy lock file to home directory for consistent testing
          mkdir -p ~/.config/home-manager
          cp flake.lock ~/.config/home-manager/
          nix run .#home-manager -- init --switch --override-input home-manager .
      - name: Uninstall
        # FIXME: nix broken on darwin on unstable
        if: matrix.os == 'ubuntu-latest' && matrix.test_chunk == 1 && (github.event_name == 'schedule' || needs.changes.outputs.hm == 'true')
        run: yes | nix run . -- uninstall
      - name: Run tests (chunk ${{ matrix.test_chunk }})
        if: github.event_name == 'schedule' || needs.changes.outputs.tests == 'true'
        run: |
          nix build -j auto --show-trace --option allow-import-from-derivation false --reference-lock-file flake.lock "./tests#test-chunk-${{ matrix.test_chunk }}"
        env:
          GC_INITIAL_HEAP_SIZE: 4294967296
      - name: Run tests with IFD (chunk ${{ matrix.test_chunk }})
        if: github.event_name == 'schedule' || needs.changes.outputs.tests == 'true'
        run: |
          nix build -j auto --show-trace --reference-lock-file flake.lock "./tests#test-chunk-${{ matrix.test_chunk }}"
        env:
          GC_INITIAL_HEAP_SIZE: 4294967296
      - name: Generate Job Summary
        if: github.event_name == 'pull_request'
        shell: bash
        run: |
          echo "### Test Job Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "A summary of tasks triggered by file changes in this PR:" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY

          if [[ "${{ needs.changes.outputs.docs }}" == "true" ]]; then
            echo "- ✅ **Docs Build:** Triggered" >> $GITHUB_STEP_SUMMARY
          else
            echo "- ☑️ **Docs Build:** Skipped (no relevant files changed)" >> $GITHUB_STEP_SUMMARY
          fi

          if [[ "${{ needs.changes.outputs.format }}" == "true" ]]; then
            echo "- ✅ **Format Check:** Triggered" >> $GITHUB_STEP_SUMMARY
          else
            echo "- ☑️ **Format Check:** Skipped (no relevant files changed)" >> $GITHUB_STEP_SUMMARY
          fi

          if [[ "${{ needs.changes.outputs.hm }}" == "true" ]]; then
            echo "- ✅ **Home Manager Tests:** Triggered" >> $GITHUB_STEP_SUMMARY
          else
            echo "- ☑️ **Home Manager Tests:** Skipped (no relevant files changed)" >> $GITHUB_STEP_SUMMARY
          fi

          if [[ "${{ needs.changes.outputs.tests }}" == "true" ]]; then
            echo "- ✅ **General Tests:** Triggered" >> $GITHUB_STEP_SUMMARY
          else
            echo "- ☑️ **General Tests:** Skipped (no relevant files changed)" >> $GITHUB_STEP_SUMMARY
          fi