anytree>=2.4.1
click>=7
packaging>=17
pkginfo>=1.4.2,<1.8  # ref ddelange/pipgrip#68
setuptools>=38.3  # for pkg_resources
wheel
pip>=7.1.0  # >=7.1.0 for --constraint
enum34; python_version=='2.7'
typing; python_version=='2.7'
