map -package:containers -package:case-insensitive -package:basement -is:exact -package:pipes -package:base-compat-batteries -package:monoidal-containers -package:bytestring -package:base -package:imports -package:amazonka-core -is:exact -package:invertible -package:ghc is:exact -package:aeson -package:os-string package:charset

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