ci.yml

name: "CI"
on:
  push:
    branches:
      - "**"
      - "!main"
  pull_request:
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
jobs:
  check:
    runs-on: ubuntu-latest
    outputs:
      configs: ${{ steps.list-configs.outputs.configs }}
    steps:
      - uses: actions/checkout@v3
      - uses: determinatesystems/nix-installer-action@v4
      - name: nix flake check
        run: |
          nix flake check
      - name: List NixOS configurations
        id: list-configs
        run:
          echo "configs=$(nix flake show --json | jq -c '.nixosConfigurations | keys')" > $GITHUB_OUTPUT
  build:
    runs-on: ubuntu-latest
    needs:
      - check
    strategy:
      fail-fast: false
      matrix:
        system: ${{ fromJSON(needs.check.outputs.configs) }}
    steps:
      - uses: actions/checkout@v3
      - uses: determinatesystems/nix-installer-action@v4
      - uses: determinatesystems/magic-nix-cache-action@v2
      - env:
          NIXOS_CONFIG: ${{ matrix.system }}
        run: |
          nix build ".#nixosConfigurations.$NIXOS_CONFIG.config.system.build.toplevel"