extendLocalRdrEnv, lookupLocalRdrEnv, hideSomeUnquals,
mkRdrUnqual, nameRdrName, gre_name, globalRdrEnvElts, isLocalGRE )
import LoadIface ( loadInterfaceForName )
-import UniqFM ( isNullUFM )
import UniqSet ( emptyUniqSet )
import List ( nub )
import Util ( isSingleton )