Fix build

diff --git a/compiler/typecheck/TcMatches.lhs b/compiler/typecheck/TcMatches.lhs
index ce6c2fc..29890a2 100644 (file)
--- a/compiler/typecheck/TcMatches.lhs
+++ b/compiler/typecheck/TcMatches.lhs
@@ -730,7 +730,7 @@ tcMcStmt ctxt (ParStmt bndr_stmts_s mzip_op bind_op return_op) res_ty thing_insi
        -- so for now we just check that it's the identity
     check_same actual expected
       = do { coi <- unifyType actual expected
        -- so for now we just check that it's the identity
     check_same actual expected
       = do { coi <- unifyType actual expected

-          ; unless (isIdentityCoI coi) $
+          ; unless (isReflCo coi) $

              failWithMisMatch [UnifyOrigin { uo_expected = expected
                                            , uo_actual = actual }] }
 
              failWithMisMatch [UnifyOrigin { uo_expected = expected
                                            , uo_actual = actual }] }