hello/.github/workflows/main.yml

name: "Hello"
on:
  push:
    branches: [ main, master ]
  pull_request:
    types: [opened, reopened, synchronize]

permissions:
  contents: read
  issues: write

concurrency:
  group: ${{ github.ref }}
  cancel-in-progress: true

env:
  GIT_BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
  GITHUB_REPOSITORY: ${{ github.repository }}
  GITHUB_SHA: ${{ github.sha }}

jobs:
  nix-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v22
      - id: set-matrix
        name: Generate Nix Matrix
        run: |
          set -Eeu
          echo "matrix=$(nix eval --json '.#githubActions.matrix')" >> "$GITHUB_OUTPUT"
  nix-build:
    needs: nix-matrix
    name: Build on ${{ matrix.attr }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
    steps:
      - uses: cachix/install-nix-action@v22
      - uses: actions/checkout@v3
      - run: nix build -L ".#${{ matrix.attr }}"

    # runs-on: ubuntu-latest
    # name: Build on ${{ matrix.distro }} (${{ matrix.version }}) for ${{ matrix.arch }}

    # # strategy:
    # #   matrix:
    # #     include:
    # #       - arch: x86_64
    # #         distro: Debian
    # #         version: bullseye
    # #       - arch: aarch64
    # #         distro: Debian
    # #         version: bullseye
    # #       - arch: ppc64le
    # #         distro: Debian
    # #         version: bullseye
    # #       - arch: risc64
    # #         distro: Ubuntu
    # #         version: ubuntu_latest

    # steps:
    #   - uses: actions/checkout@v3
    #   - uses: cachix/install-nix-action@v22
    #     with:
    #       github_access_token: ${{ secrets.GITHUB_TOKEN }}
    #   - run: nix build -L 
    #   - run: nix flake check

    #       nix-build:
    # needs: nix-matrix
    # runs-on: ${{ matrix.os }}
    # strategy:
    #   matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
    # steps:
    #   - uses: actions/checkout@v3
    #   - uses: cachix/install-nix-action@v22
    #   - run: nix build -L ".#${{ matrix.attr }}"