map -package:containers -package:case-insensitive -is:exact -package:ghc -is:exact -package:aeson -package:insert-ordered-containers -package:base-compat -package:dense-linear-algebra -package:Cabal-syntax -package:integration -package:conduit -package:blaze-html -package:invertible package:charset

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