six

[:"linux" in sys_platform]
python-xlib>=0.17

[:python_version == "2.7"]
enum34

[:sys_platform == "darwin"]
pyobjc-framework-Quartz<7.0,>=6.0
pyobjc-framework-Cocoa<7.0,>=6.0
pyobjc-core<7.0,>=6.0
