name: CI

on:
  pull_request:
  merge_group:

concurrency:
  group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
  cancel-in-progress: true

jobs:
  sort-build-systems:
    runs-on: ubuntu-22.04
    steps:
    - uses: cachix/install-nix-action@v23
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v4
    - name: Check format
      run: nix-shell --packages jq diffutils --run "diff --unified overrides/build-systems.json <(jq --from-file overrides/sort-build-systems.jq --raw-output --sort-keys < overrides/build-systems.json)"

  nixpkgs-fmt:
    runs-on: ubuntu-latest
    steps:
    - uses: cachix/install-nix-action@v23
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v4
    - name: Check format
      run: nix run 'nixpkgs#nixpkgs-fmt' -- --check .

  black-fmt:
    runs-on: ubuntu-latest
    steps:
    - uses: cachix/install-nix-action@v23
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v4
    - uses: cachix/cachix-action@v12
      with:
        name: poetry2nix
        signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
    - name: Check format
      run: nix develop -c black --check .

  nix-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v23
      - id: set-matrix
        name: Generate Nix Matrix
        run: |
          set -Eeu
          echo "matrix=$(nix eval --json '.#githubActions.matrix')" >> "$GITHUB_OUTPUT"

  nix-build:
    needs: nix-matrix
    runs-on: ${{ matrix.os }}
    strategy:
      matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v23
      - uses: cachix/cachix-action@v12
        with:
          name: poetry2nix
          signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
      - run: nix build -L ".#${{ matrix.attr }}"

  collect:
    runs-on: ubuntu-latest
    needs:
      - nixpkgs-fmt
      - black-fmt
      - nix-build
      - sort-build-systems
    steps:
      - run: true