anytree
click>=7
packaging>=17
pkginfo>=1.4.2
setuptools>=38.3  # for pkg_resources
wheel
pip>=7.1.0,<21  # >=7.1.0 for --constraint, <21 for --use-deprecated legacy-resolver in pipgrip.pipper._get_available_versions
enum34; python_version=='2.7'
typing; python_version=='2.7'
