lightning/.github/workflows/ci_pkg-install.yml

name: Package

# see: https://help.github.com/en/actions/reference/events-that-trigger-workflows
on:  # Trigger the workflow on push or pull request, but only for the master branch
  push:
    branches: [master, "release/*"]
  pull_request:
    branches: [master, "release/*"]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref }}
  cancel-in-progress: ${{ ! (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/release/')) }}

jobs:

  install:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      # max-parallel: 6
      matrix:
        os: [ubuntu-20.04, macOS-10.15, windows-2019]
        python-version: [3.7, 3.9]

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}

      - name: Prepare env
        run: |
          pip install "twine==3.2" setuptools wheel

      - name: Create package
        run: |
          python setup.py check --metadata --strict
          python setup.py sdist bdist_wheel

      - name: Check package
        run: |
          twine check dist/*
          python setup.py clean

      - name: Setup Windows
        if: runner.os == 'windows'
        run: |
          # this is just a hotfix because of Win cannot install it directly
          pip install -r requirements.txt --find-links https://download.pytorch.org/whl/cpu/torch_stable.html

      - name: Install | Uninstall package - archive
        run: |
          # install as archive
          pip install dist/*.tar.gz
          cd ..
          python -c "import pytorch_lightning as pl ; print(pl.__version__)"
          pip uninstall -y pytorch-lightning

      - name: Install | Uninstall package - wheel
        run: |
          # install as wheel
          pip install dist/*.whl
          cd ..
          python -c "import pytorch_lightning as pl ; print(pl.__version__)"
          pip uninstall -y pytorch-lightning