map -package:containers -package:basement -package:conduit -is:exact -package:bytestring -package:pipes -package:ghc -package:hedgehog -package:filepath -package:psqueues -package:base-compat -is:exact -package:integration -package:case-insensitive -package:regex-tdfa -package:base-compat-batteries package:charset -is:exact

map :: (Char -> Char) -> CharSet -> CharSet
charset Data.CharSet