map -package:vector -package:conduit -package:blaze-html -is:exact -package:basement -package:aeson -package:Cabal-syntax is:exact -package:monoidal-containers package:hedgehog

Generates a map using a Range to determine the length. This may fail to generate anything if the keys produced by the generator do not account for a large enough number of unique items to satify the required map size.