name: CI

on:
  pull_request:

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@v20
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v3
    - name: Check format
      run: nix-shell --packages jq --pure --run 'diff overrides/build-systems.json <(jq --raw-output --sort-keys < overrides/build-systems.json)'

  nixpkgs-fmt:
    runs-on: ubuntu-latest
    steps:
    - uses: cachix/install-nix-action@v20
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v3
    - name: Check format
      run: nix-shell --arg packages 'pkgs:[ pkgs.nixpkgs-fmt ]' --run 'nixpkgs-fmt --check .'

  black-fmt:
    runs-on: ubuntu-latest
    steps:
    - uses: cachix/install-nix-action@v20
      with:
        nix_path: nixpkgs=channel:nixos-unstable
    - uses: actions/checkout@v3
    - uses: cachix/cachix-action@v12
      with:
        name: poetry2nix
        signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
    - name: Check format
      run: nix-shell --arg packages 'pkgs:[ pkgs.p2nix-tools.env ]' --run 'black --check .'

  matrix_generate:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v20
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - id: set-matrix
        run: |
          set -euo pipefail

          matrix="$(nix-instantiate --eval --json --expr 'builtins.attrNames (import ./tests {})' | jq -rcM '{attr: .}')"
          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"

  builds-linux:
    needs: matrix_generate
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{fromJSON(needs.matrix_generate.outputs.matrix)}}
    steps:
      - uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v20
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - uses: cachix/cachix-action@v12
        with:
          name: poetry2nix
          signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
      - run: nix-shell --arg packages 'pkgs:[ pkgs.nix-build-uncached ]' --run 'nix-build-uncached -build-flags "-L" --keep-going --show-trace tests/default.nix -A ${{ matrix.attr }}'

  builds-macos:
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v20
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - uses: cachix/cachix-action@v12
        with:
          name: poetry2nix
          signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
      - run: nix-shell --arg packages 'pkgs:[ pkgs.nix-build-uncached ]' --run 'nix-build-uncached -build-flags "-L" --keep-going --show-trace tests/default.nix'