--- mueval-0.8-orig/mueval.cabal	2010-04-10 04:21:30.000000000 +1000
+++ mueval-0.8/mueval.cabal	2011-01-04 21:50:40.648753396 +1100
@@ -31,7 +31,7 @@
 library
         exposed-modules:     Mueval.Parallel, Mueval.Context, Mueval.Interpreter,
                              Mueval.ArgsParse, Mueval.Resources
-        build-depends:       base>=4 && < 5, containers, directory, mtl<1.2, filepath, unix, process,
+        build-depends:       base>=4 && < 5, containers, directory, mtl<2.1, filepath, unix, process,
                              hint>=0.3.1, show>=0.3, utf8-string, Cabal, extensible-exceptions
         ghc-options:         -Wall -static -O2
 
--- mueval-0.8-orig/Mueval/Interpreter.hs	2010-04-10 04:21:30.000000000 +1000
+++ mueval-0.8/Mueval/Interpreter.hs	2011-01-04 22:34:56.208447809 +1100
@@ -2,7 +2,7 @@
 -- TODO: suggest the convenience functions be put into Hint proper?
 module Mueval.Interpreter where
 
-import Control.Monad (guard,mplus,unless,when)
+import Control.Monad (guard,mplus,unless,when,Functor)
 import Control.Monad.Trans (MonadIO)
 import Control.Monad.Writer (Any(..),runWriterT,tell)
 import Data.Char (isDigit)
@@ -118,7 +118,7 @@
 exceptionMsg = "*Exception: "
 
 -- | Renders the input String including its exceptions using @exceptionMsg@
-render :: (Control.Monad.Trans.MonadIO m)
+render :: (Control.Monad.Trans.MonadIO m, Functor m)
           => Int -- ^ max number of characters to include
           -> String -- ^ input
           -> m (String, Bool) -- ^ ( output, @True@ if we found an exception )