certifi
pip>=18.0
setuptools>=36.2.1
virtualenv
virtualenv-clone>=0.2.5

[dev]
bs4
flake8<4.0,>=3.3.0
invoke
parver
sphinx<2
towncrier
twine

[dev:python_version >= "3.6"]
black

[tests]
flaky
mock
pytest-tap
pytest-xdist
pytest<5.0
