map -package:containers -package:aeson -package:imports -package:charset -package:base-prelude -package:invertible -package:basement -package:foldl -package:Cabal-syntax package:hedgehog is:exact
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.