name: "Build"
on:
  pull_request:
  push:
    branches: ["main"]
    paths: [".forgejo/workflows/build.yaml"]
  # schedule every night
  schedule:
    - cron: "0 0 * * *"
jobs:
  nix-build:
    if: github.event.pull_request.draft == false
    strategy:
      fail-fast: false
      matrix:
        include:
          - system: varda
            os: native-aarch64
          - system: telchar
            os: native-x86_64
          - system: gandalf
            os: native-x86_64
    runs-on: ${{ matrix.os }}
    env:
      PATH: ${{ format('{0}:{1}', '/run/current-system/sw/bin', env.PATH) }}
    steps:
      - name: Checkout repository
        uses: https://github.com/actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: https://github.com/cachix/cachix-action@v15
        if: ${{ !github.event.pull_request.head.repo.fork }}
        with:
          name: hsndev
          # If you chose API tokens for write access OR if you have a private cache
          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
        # env:
          # USER: 'root'

      - name: Garbage collect build dependencies
        run: nix-collect-garbage

      - name: Build new ${{ matrix.system }} system
        shell: bash
        run: |
          set -o pipefail
          nix build \
            ".#top.${{ matrix.system }}" \
            --profile ./profile \
            --fallback \
            -v \
            --log-format raw \
             > >(tee stdout.log) 2> >(tee /tmp/nix-build-err.log >&2)
      - name: Push to Cachix
        if: success()
        env:
          CACHIX_AUTH_TOKEN: ${{ secrets.CACHIX_AUTH_TOKEN }}
        run: nix build ".#top.${{ matrix.system }}" --json | jq -r .[].drvPath | cachix push hsndev