What is it?
Gtk2Hs is a Haskell binding to Gtk+ 2.x. Using it, one can write Gtk+ based applications with GHC.
It currently works with Gtk+ 2.0 through to 2.8 on Unix, Win32 and MacOS X. The widget function coverage is almost complete, only a few minor bits and pieces are missing.
It currently builds with ghc 5.04.3 through to 6.4.2