map -package:containers -package:foldl -package:incipit-base -package:aeson -package:basement -package:monoidal-containers -package:filepath -package:imports -package:psqueues -package:base-prelude -is:exact -package:base-compat-batteries is:exact -package:os-string -package:conduit package:charset

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