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-rw-r--r--XMonad/Core.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/XMonad/Core.hs b/XMonad/Core.hs
index e36e165..c86a170 100644
--- a/XMonad/Core.hs
+++ b/XMonad/Core.hs
@@ -125,7 +125,7 @@ data ScreenDetail = SD { screenRect :: !Rectangle } deriving (Eq,Show, Read)
--
newtype X a = X (ReaderT XConf (StateT XState IO) a)
#ifndef __HADDOCK__
- deriving (Functor, Monad, MonadIO, MonadState XState, MonadReader XConf)
+ deriving (Functor, Monad, MonadIO, MonadState XState, MonadReader XConf, Typeable)
#endif
instance Applicative X where