-- They just clutter up the environment (esp tuples), and the parser
-- will generate Exact RdrNames for them, so the cluttered
-- envt is no use. To avoid doing this filter all the time,
-- They just clutter up the environment (esp tuples), and the parser
-- will generate Exact RdrNames for them, so the cluttered
-- envt is no use. To avoid doing this filter all the time,