How do I find out which module a package is loaded from? I have xmonad-contrib-0.9.1 and xmonad-contrib-0.9.2 installed. I did $ sudo ghc-pkg hide xmonad-contrib-0.9.1 but it seems the module used is still xmonad-contrib-0.9.1 (I *think*). I have in my xmonad.hs the line "import qualified XMonad.Util.Dzen as Dzen" which works - but only with the legacy functions (e.g. dzen , but *not* dzenConfig), hence my hobby conclusion that it is xmonad-contrib-0.9.1 that is used -- despite the fact that it is "hidden", but what do I know? So how *does* GHC find a package, and within it, a module? I have been using "the Google" and the documentation for a while now, but I've come up emtpy handed. Is the module system really so badly documented? /Fredrik Carlén