X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypes%2FTypeRep.lhs;h=5c29087ec989e644f8af3224fe1fcd45301f63a3;hb=524c609b6d8d220b03640dc71a209530bf2ed280;hp=f71606e39b7a59d0aef4d7e5518004f72c81238c;hpb=3256860dc70f3a4fbd953c858ec500d70a9be820;p=ghc-hetmet.git

diff --git a/compiler/types/TypeRep.lhs b/compiler/types/TypeRep.lhs
index f71606e..5c29087 100644
--- a/compiler/types/TypeRep.lhs
+++ b/compiler/types/TypeRep.lhs
@@ -15,7 +15,7 @@ module TypeRep (
 	
  	Kind, ThetaType,		-- Synonyms
 
-	funTyCon,
+	funTyCon, funTyConName,
 
 	-- Pretty-printing
 	pprType, pprParendType, pprTypeApp,
@@ -53,7 +53,6 @@ import {-# SOURCE #-} DataCon( DataCon, dataConName )
 -- friends:
 import Var
 import Name
-import OccName
 import BasicTypes
 import TyCon
 import Class
@@ -432,7 +431,14 @@ pprTypeApp tc tys = ppr_type_app TopPrec (getName tc) tys
 pprPred :: PredType -> SDoc
 pprPred (ClassP cls tys) = pprClassPred cls tys
 pprPred (IParam ip ty)   = ppr ip <> dcolon <> pprType ty
-pprPred (EqPred ty1 ty2) = sep [ppr ty1, nest 2 (ptext (sLit "~")), ppr ty2]
+pprPred (EqPred ty1 ty2) = sep [ ppr_type FunPrec ty1
+                               , nest 2 (ptext (sLit "~"))
+                               , ppr_type FunPrec ty2]
+			       -- Precedence looks like (->) so that we get
+			       --    Maybe a ~ Bool
+			       --    (a->a) ~ Bool
+			       -- Note parens on the latter!
+
 pprClassPred :: Class -> [Type] -> SDoc
 pprClassPred clas tys = ppr_type_app TopPrec (getName clas) tys