map -package:containers -package:basement -package:psqueues -package:Cabal-syntax -package:bytestring -package:aeson -package:pipes -package:os-string -package:invertible -is:exact -package:integration -package:base-prelude -package:text -package:unordered-containers -package:dense-linear-algebra package:charset

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