Hi all, I managed to install ghc 6.10.4 from the tar ball on haskell.org on OpenSolaris 2009.06, the X11 package then also installed quite easily too via cabal-install. But when I tried a cabal install xmonad this error occured: guenni@opensolaris:~$ cabal install xmonad Resolving dependencies... Configuring xmonad-0.9... Preprocessing library xmonad-0.9... Preprocessing executables for xmonad-0.9... Building xmonad-0.9... [1 of 8] Compiling XMonad.StackSet ( XMonad/StackSet.hs, dist/build/XMonad/StackSet.o ) [2 of 8] Compiling XMonad.Core ( XMonad/Core.hs, dist/build/XMonad/Core.o ) [3 of 8] Compiling XMonad.Layout ( XMonad/Layout.hs, dist/build/XMonad/Layout.o ) [4 of 8] Compiling XMonad.Operations ( XMonad/Operations.hs, dist/build/XMonad/Operations.o ) [5 of 8] Compiling XMonad.ManageHook ( XMonad/ManageHook.hs, dist/build/XMonad/ManageHook.o ) [6 of 8] Compiling XMonad.Config ( XMonad/Config.hs, dist/build/XMonad/Config.o ) [7 of 8] Compiling XMonad.Main ( dist/build/XMonad/Main.hs, dist/build/XMonad/Main.o ) XMonad/Main.hsc:332:21: Couldn't match expected type `base:GHC.Word.Word8' against inferred type `Char' Expected type: KeyCode Inferred type: Char In the second argument of `(/=)', namely '\NUL' In the first argument of `when', namely `(kc /= '\NUL')' cabal: Error: some packages failed to install: xmonad-0.9 failed during the building phase. The exception was: exit: ExitFailure 1 I may be wrong, but doesn't this indicate an error in xmonad's code itself, how can that be? Günther