map -package:containers is:exact -package:base -package:ghc -package:invertible -package:base-compat -package:bytestring -package:aeson -package:foldl -package:hedgehog -package:incipit-base -package:blaze-html -package:monoidal-containers package:charset

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