http://stackoverflow.com/questions/17869101/unable-to-install-pygame-using-pip sudo pip install hg+http://bitbucket.org/pygame/pygame

https://github.com/kivy/kivy/issues/3309 USE_OSX_FRAMEWORKS=0 pip install git+https://github.com/kivy/kivy.git@1.9.0

https://github.com/apple/swift/pull/17#issuecomment-161893093