X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcEnv.lhs;h=b5884a742a49d02703b272085b13532d305bd5e3;hb=191292aaa7f56f32fc546478f43aa89ac67c95a3;hp=c51f78645cdc2942fa961be99af257b9e38084b6;hpb=47673f2f689b0c3294c119afd217afab1044f213;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcEnv.lhs b/compiler/typecheck/TcEnv.lhs
index c51f786..b5884a7 100644
--- a/compiler/typecheck/TcEnv.lhs
+++ b/compiler/typecheck/TcEnv.lhs
@@ -203,6 +203,7 @@ tcLookupFamInst tycon tys
   = do { env <- getGblEnv
        ; eps <- getEps
        ; let instEnv = (eps_fam_inst_env eps, tcg_fam_inst_env env)
+       ; traceTc "lookupFamInst" ((ppr tycon <+> ppr tys) $$ ppr instEnv)
        ; case lookupFamInstEnv instEnv tycon tys of
 	   []                      -> return Nothing
 	   ((fam_inst, rep_tys):_) 
@@ -210,7 +211,7 @@ tcLookupFamInst tycon tys
        }
 
 tcLookupDataFamInst :: TyCon -> [Type] -> TcM (TyCon, [Type])
--- Find the instance of a data famliy
+-- Find the instance of a data family
 -- Note [Looking up family instances for deriving]
 tcLookupDataFamInst tycon tys
   | not (isFamilyTyCon tycon)
@@ -460,7 +461,7 @@ tcExtendGlobalTyVars gtv_var extra_global_tvs
 \begin{code}
 tcExtendRules :: [LRuleDecl Id] -> TcM a -> TcM a
 	-- Just pop the new rules into the EPS and envt resp
-	-- All the rules come from an interface file, not soruce
+	-- All the rules come from an interface file, not source
 	-- Nevertheless, some may be for this module, if we read
 	-- its interface instead of its source code
 tcExtendRules lcl_rules thing_inside
@@ -680,7 +681,7 @@ newDFunName clas tys loc
 \end{code}
 
 Make a name for the representation tycon of a family instance.  It's an
-*external* name, like otber top-level names, and hence must be made with
+*external* name, like other top-level names, and hence must be made with
 newGlobalBinder.
 
 \begin{code}