map -package:containers -package:aeson -package:integration -package:foldl -package:imports -package:bytestring -package:case-insensitive -package:monoidal-containers -package:base-compat -package:incipit-base -package:os-string package:pipes is:exact

Apply a function to all values flowing downstream
map id = cat

map (g . f) = map f >-> map g