X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FVar.lhs;h=017e355e4518cf05d30034b864d7cf7a76012149;hb=a97f155c04a7ff981da3e589158ecf70db72d1cd;hp=d4bf400ef6cced13d2dc15d7d94f7bc52e26ed16;hpb=0b86bc9b022a5965d2b35f143ff4b919f784e676;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/Var.lhs b/compiler/basicTypes/Var.lhs
index d4bf400..017e355 100644
--- a/compiler/basicTypes/Var.lhs
+++ b/compiler/basicTypes/Var.lhs
@@ -22,7 +22,7 @@ module Var (
 	Id, DictId,
 	idName, idType, idUnique, idInfo, modifyIdInfo, maybeModifyIdInfo,
 	setIdName, setIdUnique, setIdType, setIdInfo, lazySetIdInfo, 
-	setIdExported, setIdNotExported, 
+	setIdExported, setIdNotExported,
 
 	globalIdDetails, globaliseId, 
 
@@ -40,12 +40,14 @@ import {-# SOURCE #-}	TcType( TcTyVarDetails, pprTcTyVarDetails )
 import {-# SOURCE #-}	IdInfo( GlobalIdDetails, notGlobalId, IdInfo, seqIdInfo )
 
 import Name		( Name, NamedThing(..),
-			  setNameUnique, nameUnique, mkSysTvName
+			  setNameUnique, nameUnique, mkSysTvName, 
+                          mkSystemVarName
 			)
 import Unique		( Unique, Uniquable(..), mkUniqueGrimily, getKey#,
                           mkBuiltinUnique )
 import FastTypes
-import Outputable
+import FastString
+import Outputable       
 \end{code}
 
 
@@ -203,13 +205,15 @@ mkTcTyVar name kind details
 	}
 
 mkWildCoVar :: Kind -> TyVar
+-- A type variable that is never referred to,
+-- so its unique doesn't matter
 mkWildCoVar kind 
   = TyVar { varName = mkSysTvName wild_uniq FSLIT("co_wild"),
             realUnique = _ILIT(1),
             tyVarKind = kind,
             isCoercionVar = True }
   where
-    wild_uniq = (mkBuiltinUnique 1)
+    wild_uniq = mkBuiltinUnique 1
 \end{code}
 
 %************************************************************************