Deprecate the ImpredicativeTypes feature

[ghc-hetmet.git] / compiler / main / DynFlags.hs

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index d445055..e5a549a 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -1811,7 +1811,8 @@ xFlags = [
   ( "LiberalTypeSynonyms",              Opt_LiberalTypeSynonyms, const Supported ),
   ( "Rank2Types",                       Opt_Rank2Types, const Supported ),
   ( "RankNTypes",                       Opt_RankNTypes, const Supported ),
-  ( "ImpredicativeTypes",               Opt_ImpredicativeTypes, const Supported ),
+  ( "ImpredicativeTypes",               Opt_ImpredicativeTypes, 
+        const $ Deprecated "Impredicative polymorphism will be simplified or removed in GHC 6.14" ),
   ( "TypeOperators",                    Opt_TypeOperators, const Supported ),
   ( "RecursiveDo",                      Opt_RecursiveDo,
     deprecatedForLanguage "DoRec"),