-r optional.txt

build==0.8.0
pip==22.2.2
pre-commit==2.20.0
pytest==7.1.3
pytest-cov==3.0.0
pytest-xdist==2.5.0
setuptools==65.3.0
setuptools-scm==7.0.5
Sphinx==5.1.1
twine==4.0.1
virtualenv==20.16.4
