map -package:containers -package:base -package:insert-ordered-containers -package:basement -package:foldl -package:base-compat-batteries -package:os-string -package:hedgehog -is:exact -package:filepath -package:aeson -package:case-insensitive -package:regex-tdfa -package:pipes -package:text -package:incipit-base package:charset -is:exact

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