A module aimed at making working with GtkBuilder easier. It's meant to be used like this (requires OverloadedStrings):

buildUI :: BuildFn ()
buildUI = do
    mainWin <- buildMainWin
    buildAboutDialog

    widgetShowAll mainWin

buildMainWin :: BuildFn ApplicationWindow
buildMainWin = do
    buildHeaderBar
    buildMenuBar
    buildMainArea

    mainWin <- getObject' ApplicationWindow "mainWin"
    on mainWin Destroy mainQuit
    return mainWin

buildAboutDialog :: BuildFn AboutDialog
...

buildHeaderBar :: BuildFn HeaderBar
...

buildMenuBar :: BuildFn MenuBar
...

buildMainArea :: BuildFn Grid
...