ci.yml

name: CI

on:
  workflow_dispatch:
  merge_group:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  generate-matrix:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v9

      - id: generate-matrix
        name: Generate Nix Matrix
        run: |
          set -Eeu
          matrix="$(nix eval --json '.#lib.mkGHActionsMatrix')"
          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
    outputs:
      matrix: ${{ steps.generate-matrix.outputs.matrix }}

  build:
    needs: generate-matrix
    strategy:
      fail-fast: false
      matrix: ${{fromJSON(needs.generate-matrix.outputs.matrix)}}

    name: ${{ matrix.package }} | ${{ matrix.system }}
    runs-on: ${{ matrix.os }}
    continue-on-error: ${{ matrix.allowedToFail }}

    steps:
      - uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v9

      - uses: cachix/cachix-action@v14
        with:
          name: ${{ vars.CACHIX_CACHE }}
          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}

      - name: Build ${{ matrix.package }}
        run: nix build -L --json --no-link '.#${{ matrix.attrPath }}'

  results:
    if: ${{ always() }}
    runs-on: ubuntu-latest
    name: Final Results
    needs: [build]
    steps:
      - run: exit 1
        if: >-
          ${{
               contains(needs.*.result, 'failure')
            || contains(needs.*.result, 'cancelled')
          }}