map -package:containers -package:Cabal-syntax -package:base-prelude -package:basement -package:case-insensitive -is:exact -package:insert-ordered-containers -package:incipit-base is:exact -package:bytestring -package:invertible -package:ghc -package:os-string package:monoidal-containers
O(n) Transform this map by applying a function to every value.