Add tests for imports when optional packages are unavailable (#428)

* update CI install

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
Co-authored-by: Jirka <jirka.borovec@seznam.cz>

.github/workflows/ci_install-pkg.yml

@@ -46,17 +46,11 @@ jobs:
 
  - name: Create package
  run: |
- # python setup.py check --metadata --strict
- python setup.py sdist
+ pip install cython setuptools wheel
+ python setup.py sdist bdist_wheel
 
  - name: Install package
- if: runner.os != 'windows'
+ working-directory: ./dist
  run: |
- pip install virtualenv
- virtualenv vEnv ; source vEnv/bin/activate
- # pip install -r requirements.txt
- pip install torchvision matplotlib
- pip install dist/*
- cd .. & python -c "import pytorch_lightning as pl ; print(pl.__version__)"
- cd .. & python -c "import pl_bolts ; print(pl_bolts.__version__)"
- deactivate ; rm -rf vEnv
+ pip install $(python -c "import glob ; pkg = glob.glob('*.whl')[0] ; print(pkg)")
+ python -c "import pl_bolts ; print(pl_bolts.__version__)"