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