X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypes%2FInstEnv.lhs;h=70e61661d3a3bc179a853fac14c2535ef4d94fb9;hb=bdee32f9a91a9bb2403a469494674c909d1bdb76;hp=d4a7b771b7de4b9c7d46c968929e30a4236b319b;hpb=0065d5ab628975892cea1ec7303f968c3338cbe1;p=ghc-hetmet.git

diff --git a/compiler/types/InstEnv.lhs b/compiler/types/InstEnv.lhs
index d4a7b77..70e6166 100644
--- a/compiler/types/InstEnv.lhs
+++ b/compiler/types/InstEnv.lhs
@@ -108,7 +108,7 @@ data Instance
 --		This is used for versioning; the instance decl is
 --		considered part of the defn of n when computing versions
 --
---    Nothing 	The head mentions nothing defined in this modle
+--    Nothing 	The head mentions nothing defined in this module
 --
 -- If a module contains any orphans, then its interface file is read 
 -- regardless, so that its instances are not missed. 
@@ -240,6 +240,7 @@ data OverlapFlag
 		-- Without the Incoherent flag, we'd complain that
 		-- instantiating 'b' would change which instance 
 		-- was chosen
+  deriving( Eq )
 
 instance Outputable OverlapFlag where
    ppr NoOverlap  = empty