ci.yml

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)"

  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:
      fail-fast: false
      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 }}" --keep-going

  test-template:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v23
      - uses: cachix/cachix-action@v12
        with:
          name: poetry2nix
          signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="

      - name: create flake template test directory
        run: echo "TESTDIR=$(mktemp -d)" >> "$GITHUB_ENV"

      - name: initialize flake from poetry2nix template
        working-directory: ${{ env.TESTDIR }}
        run: nix flake init --template "$GITHUB_WORKSPACE"

      - name: force flake to our poetry2nix version
        working-directory: ${{ env.TESTDIR }}
        run: nix flake lock --override-input poetry2nix "$GITHUB_WORKSPACE"

      - name: generate pyproject.toml
        working-directory: ${{ env.TESTDIR }}
        run: nix develop -c poetry init --name=poetry2nix-template-test --quiet

      - name: generate poetry.lock
        working-directory: ${{ env.TESTDIR }}
        run: nix develop -c poetry lock --no-update

      - name: create a minimal python package
        working-directory: ${{ env.TESTDIR }}
        run: |
          touch README.md
          mkdir poetry2nix_template_test
          touch poetry2nix_template_test/__init__.py

      - name: build the flake
        working-directory: ${{ env.TESTDIR }}
        run: nix build --keep-going -L --show-trace

  collect:
    runs-on: ubuntu-latest
    needs:
      - nix-build
      - sort-build-systems
      - test-template
    steps:
      - run: exit 0