map -package:ghc -package:base-compat-batteries -package:Cabal-syntax -package:basement -package:bytestring -package:case-insensitive -package:foldl -is:exact -package:insert-ordered-containers -is:exact -package:incipit-base -package:aeson -is:exact -package:filepath -package:monoidal-containers package:charset

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