exported_con con = any (`elemNameSet` exports)
(dataConName con : dataConFieldLabels con)
-tidyInstances :: (DFunId -> DFunId) -> [Instance] -> [Instance]
+tidyInstances :: (DFunId -> DFunId) -> [ClsInst] -> [ClsInst]
tidyInstances tidy_dfun ispecs
= map tidy ispecs
where