map -package:containers -package:case-insensitive -package:foldl -is:exact -package:integration -package:incipit-base -package:aeson -package:base-compat-batteries -package:base-compat -package:invertible -package:insert-ordered-containers -package:conduit package:charset

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