pyperclip

[:platform_system == "Darwin"]
rubicon-objc

[:platform_system == "Linux" and python_version < "3.0"]
Xlib

[:platform_system == "Linux" and python_version >= "3.0"]
python3-Xlib

[:python_version == "2.7"]
Pillow>=2.0.0

[:python_version == "3.2"]
Pillow<=3.4.2,>=2.0.0

[:python_version == "3.3"]
Pillow<=4.3.0,>=2.0.0

[:python_version == "3.4"]
Pillow<=5.4.1,>=2.5.0

[:python_version == "3.5"]
Pillow>=3.2.0

[:python_version == "3.6"]
Pillow>=4.0.0

[:python_version == "3.7"]
Pillow>=5.2.0