map -package:containers -package:foldl -package:incipit-base -package:aeson -package:ghc -package:basement -package:base-compat -package:case-insensitive -package:bytestring -is:exact -package:dense-linear-algebra -package:filepath -package:base -package:monoidal-containers -package:insert-ordered-containers -package:text package:charset

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