until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:ghc -package:snap-core is:exact -package:hledger-web -package:ghc-lib-parser -package:netwire

until p f yields the result of applying f until p holds.
repeat action until result fulfills condition
until p f yields the result of applying f until p holds.