map -package:containers is:exact -package:case-insensitive -package:base-compat -package:base-prelude -package:imports -package:aeson -package:conduit -package:hedgehog -package:invertible -package:insert-ordered-containers -package:Cabal-syntax -package:filepath -package:os-string -package:incipit-base -package:bytestring package:foldl

Fold pairs into a map.