%pyproject_wheel with test dependencies

Hi, I wanted to update python-pydyf to current version. The project has switched from setup.py to pyproject.toml. I run into an error while testing: pytest-3.8: error: unrecognized arguments: --flake8 --numprocesses=auto as probably some dependencies are not installed Is there a way to automate this. like in pip install pydyf[test] ? Thanks Axel