This patch is required for xmonad to make use of shared libraries.
Without it, xmonad will not work since we do not (by default) use
statically linked Haskell libraries.

index 46a0939..5ad4f8f 100644
--- a/src/XMonad/Core.hs
+++ b/src/XMonad/Core.hs
@@ -664,6 +664,8 @@ compile dirs method =
   where
     ghcArgs = [ "--make"
               , "xmonad.hs"
+              , "-dynamic"
+              , "-fPIC"
               , "-i" -- only look in @lib@
               , "-ilib"
               , "-fforce-recomp"
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