map -package:containers -package:base-compat-batteries -package:foldl -package:base -package:aeson -package:dense-linear-algebra -package:invertible -package:basement -package:incipit-base -package:ghc -package:monoidal-containers -is:exact -package:regex-tdfa -package:pipes package:charset

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