Gtk2Hs
$ brew cask install xquartz
$ brew install glib cairo gtk gettext fontconfig freetype
$ export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:
$ cabal install alex happy
$ cabal install gtk2hs-buildtools
Installed gtk2hs-buildtools-0.13.3.1
$ cabal install glib
$ cabal install gtk -f have-quartz-gtk
Installed gtk-0.14.7
window
import Graphics.UI.Gtk
main :: IO ()
main = do
initGUI
window <- windowNew
widgetShowAll window
mainGUI