map -package:base-compat -is:exact -package:bytestring -package:foldl -package:basement -package:insert-ordered-containers -is:exact -package:incipit-base -package:filepath -package:os-string -is:exact -package:aeson -package:case-insensitive -package:invertible package:charset

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