X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcEnv.lhs;h=b3e0d7fdea0b78144fa2efd2ca60dca8cf91309b;hb=5d541fe7c43a1dc4c1b2dd9ee49e64238b0754ca;hp=936ec5b5ac36b64a688ec01690111d657c0e5427;hpb=c94408e522e5af3b79a5beadc7e6d15cee553ee7;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcEnv.lhs b/compiler/typecheck/TcEnv.lhs
index 936ec5b..b3e0d7f 100644
--- a/compiler/typecheck/TcEnv.lhs
+++ b/compiler/typecheck/TcEnv.lhs
@@ -566,7 +566,7 @@ data InstBindings
 				-- specialised instances
 
   | NewTypeDerived 		
-        (Maybe TyCon)           -- maybe a coercion for the newtype
+        TyCon                   -- tycon for the newtype
                                 -- Used for deriving instances of newtypes, where the
 	[Type]			-- witness dictionary is identical to the argument 
 				-- dictionary.  Hence no bindings, no pragmas