[xmonad] some cleanup

[Don Stewart]

mailing_list:
> On Fri, Feb 01, 2008 at 11:00:58AM +0100, Andrea Rossato wrote:
> > [1] At the present time, when I was trying to test it, I started
> > experiencing strange problems with the linker:
> > 
> > /usr/local/lib/xmonad-contrib-0.6/ghc-6.6.1/libHSxmonad-contrib-0.6.a(Combo.o): In function `s1e0s_info':
> > ghc3557_0.hc:(.text+0x3ada): undefined reference to `xmonadzmcontribzm0zi6_XMonadziLayoutziWindowNavigation_zdf3_info'
> > /usr/local/lib/xmonad-contrib-0.6/ghc-6.6.1/libHSxmonad-contrib-0.6.a(Combo.o):(.rodata+0xa8): undefined reference to `xmonadzmcontribzm0zi6_XMonadziLayoutziWindowNavigation_zdf3_closure'
> > collect2: ld returned 1 exit status
> > 
> 
> It seems like I found a bug in ghc-6.6.1 and I need to upgrade to
> 6.8.2.
> 
> Now that is going to be a bit of a pain...
> 
> Anyhow, the code I'm sending in a separate patch seems to work fine
> with ghc-6.8.2.
> 

Missing module in the cabal file?