map -package:containers -package:ghc -package:conduit -package:imports -is:exact -is:exact -package:foldl -package:base is:exact -package:aeson -package:integration -package:basement 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.