Deal with the mtl/monads-fd conflict.

Makefile

@@ -1,5 +1,5 @@
 PREFIX=/usr
-GHCFLAGS=-O2 -Wall
+GHCFLAGS=-O2 -Wall -ignore-package monads-fd
 GHCMAKE=ghc $(GHCFLAGS) --make
 
 bins=git-annex git-annex-shell

debian/changelog

@@ -8,6 +8,7 @@ git-annex (0.20) UNRELEASED; urgency=low
     an unannex as checking in of an unlocked file.
   * map: New subcommand that uses graphviz to display a nice map of
     the git repository network.
+  * Deal with the mtl/monads-fd conflict.
 
  -- Joey Hess <joeyh@debian.org>  Mon, 31 Jan 2011 20:06:02 -0400
 

doc/bugs/conflicting_haskell_packages.mdwn

@@ -6,3 +6,12 @@ This can be done by the flags -hide-packages and then -package foo
 > 
 > Could you just show the build problem that you are suggesting I work
 > around? --[[Joey]]
+
+
+> Thanks npouillard, I see the problem now.
+> <http://stackoverflow.com/questions/2048953/control-monad-state-found-in-multiple-packages-haskell>
+> 
+> I've added "-ignore-package monads-fd" to GHCFLAGS. I hope I don't
+> really have to hide all packages and individually turn them back on;
+> surely this monads-fd/mtl conflict is an exception, and Haskell's module
+> system is not a mess of conflicting modules? --[[Joey]] [[done]]