[xmonad] Why cannot xmonad find a existng module ?

[z_axis at 163.com]

hi, friends
I am using archlinux and both xmonad and xmonad-contrib are installed by
pacman.
%pacman -Q|grep xmonad
xmonad 0.9.1-4
xmonad-contrib 0.9.1-2

%%xmonad --recompile
Error detected while loading xmonad configuration file:
/home/sw2wolf/.xmonad/xmonad.hs

xmonad.hs:20:7:
Could not find module `XMonad.Layout.LayoutHints':
Use -v to see a list of the files searched for.

%ghc-pkg list|grep xmonad
xmonad-0.9.1
xmonad-contrib-0.9.1

%pacman -Ql xmonad-contrib|grep LayoutHints
xmonad-contrib
/usr/lib/ghc-6.12.1/site-local/xmonad-contrib-0.9.1/XMonad/Layout/LayoutHints.hi


%ghc-pkg field xmonad-contrib exposed-modules | grep LayoutHints
XMonad.Layout.LayoutCombinators XMonad.Layout.LayoutHints


Sincerely!
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