add GHC.HetMet.{hetmet_kappa,hetmet_kappa_app}

[ghc-base.git] / Data / Maybe.hs

diff --git a/Data/Maybe.hs b/Data/Maybe.hs
index 981d028..2f98c70 100644 (file)
--- a/Data/Maybe.hs
+++ b/Data/Maybe.hs
@@ -1,4 +1,5 @@
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude, DeriveGeneric #-}
+
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Data.Maybe
@@ -32,6 +33,7 @@ module Data.Maybe
 
 #ifdef __GLASGOW_HASKELL__
 import GHC.Base
+import GHC.Generics (Generic)
 #endif
 
 #ifdef __NHC__
@@ -64,7 +66,7 @@ import Maybe
 -- error monad can be built using the 'Data.Either.Either' type.
 
 data  Maybe a  =  Nothing | Just a
-  deriving (Eq, Ord)
+  deriving (Eq, Ord, Generic)
 
 instance  Functor Maybe  where
     fmap _ Nothing       = Nothing