map -package:containers -package:aeson -is:exact -package:insert-ordered-containers -is:exact -package:monoidal-containers -package:base-prelude -package:imports -package:base is:exact -package:incipit-base -package:Cabal-syntax -package:basement -package:os-string -package:invertible package:charset

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