extendIfaceIdEnv, extendIfaceTyVarEnv, newIPName,
tcIfaceTyVar, tcIfaceLclId, lookupIfaceTc,
newIfaceName, newIfaceNames, ifaceExportNames )
extendIfaceIdEnv, extendIfaceTyVarEnv, newIPName,
tcIfaceTyVar, tcIfaceLclId, lookupIfaceTc,
newIfaceName, newIfaceNames, ifaceExportNames )