-r optional.txt

build==0.9.0
pip==22.3
pre-commit==2.20.0
pytest==7.2.0
pytest-cov==4.0.0
pytest-xdist==3.0.2
setuptools==65.5.0
setuptools-scm==7.0.5
Sphinx==5.3.0
twine==4.0.1
virtualenv==20.16.6
