map -package:containers -package:base-compat -package:dense-linear-algebra -package:base-prelude -package:conduit -package:case-insensitive -package:imports -package:blaze-html -package:aeson -package:base -package:monoidal-containers -package:basement -package:ghc -package:incipit-base package:charset is:exact

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