mypy_extensions
pyrsistent>=0.15.2
boltons>=19.1.0
attrs>=19.1.0

[:python_version < "3.5"]
enum34

[:python_version < "3.7"]
typing

[:python_version < "3.8"]
typing-extensions

[:sys_platform == "win32" and python_version <= "2.7"]
pip>=20.0
