X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypes%2FFamInstEnv.lhs;h=ba96a55e45fc695e95aec52c4f3b8646a6535cc2;hb=66579ff945831c5fc9a17c58c722ff01f2268d76;hp=396c8440477aeba93a933a0fa4455a8f45241798;hpb=30c122df62ec75f9ed7f392f24c2925675bf1d06;p=ghc-hetmet.git

diff --git a/compiler/types/FamInstEnv.lhs b/compiler/types/FamInstEnv.lhs
index 396c844..ba96a55 100644
--- a/compiler/types/FamInstEnv.lhs
+++ b/compiler/types/FamInstEnv.lhs
@@ -24,8 +24,6 @@ module FamInstEnv (
 
 import InstEnv
 import Unify
-import TcGadt
-import TcType
 import Type
 import TypeRep
 import TyCon
@@ -89,16 +87,16 @@ instance Outputable FamInst where
 pprFamInst :: FamInst -> SDoc
 pprFamInst famInst
   = hang (pprFamInstHdr famInst)
-	2 (ptext SLIT("--") <+> pprNameLoc (getName famInst))
+	2 (ptext (sLit "--") <+> pprNameLoc (getName famInst))
 
 pprFamInstHdr :: FamInst -> SDoc
 pprFamInstHdr (FamInst {fi_fam = fam, fi_tys = tys, fi_tycon = tycon})
   = pprTyConSort <+> pprHead
   where
-    pprHead = pprTypeApp fam (ppr fam) tys
-    pprTyConSort | isDataTyCon tycon = ptext SLIT("data instance")
-		 | isNewTyCon  tycon = ptext SLIT("newtype instance")
-		 | isSynTyCon  tycon = ptext SLIT("type instance")
+    pprHead = pprTypeApp fam tys
+    pprTyConSort | isDataTyCon tycon = ptext (sLit "data instance")
+		 | isNewTyCon  tycon = ptext (sLit "newtype instance")
+		 | isSynTyCon  tycon = ptext (sLit "type instance")
 		 | otherwise	     = panic "FamInstEnv.pprFamInstHdr"
 
 pprFamInsts :: [FamInst] -> SDoc
@@ -315,17 +313,11 @@ lookupFamInstEnvUnify (pkg_ie, home_ie) fam tys
 		)
 		-- Unification will break badly if the variables overlap
 		-- They shouldn't because we allocate separate uniques for them
-        case tcUnifyTys bind_fn tpl_tys tys of
+        case tcUnifyTys instanceBindFun tpl_tys tys of
 	    Just subst -> let rep_tys = substTyVars subst (tyConTyVars tycon)
                           in
                           ((item, rep_tys), subst) : find rest
 	    Nothing    -> find rest
-
--- See explanation at @InstEnv.bind_fn@.
---
-bind_fn :: TyVar -> BindFlag
-bind_fn tv | isTcTyVar tv && isExistentialTyVar tv = Skolem
-	   | otherwise	 		 	   = BindMe
 \end{code}
 
 %************************************************************************