[Haskell-cafe] gtk2hs gtkbuilder

i currently use gtk2hs with libglade (and glade). i understand that the gtkbuilder allows more constructs than libglade. how to use gtkbuilder in gtk2hs? i see that John Millikin has posted a patch for gtk2hs - but i cannot find it and no documentation for its use? can anyone point me to a patched version of gtk2hs and some examples? thank you! andrew