until -package:numeric-prelude -package:base-prelude -package:hosc -package:numhask -package:conferer is:exact -package:xmonad-contrib -package:llvm-hs-pure -package:intro -package:cabal-install-solver -package:Cabal-syntax package:utility-ht

until :: Monad m => (a -> Bool) -> m a -> m a
utility-ht Control.Monad.HT
repeat action until result fulfills condition