until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:base-compat -package:llvm-hs-pure -package:base -package:yesod-paginator -package:streaming package:rebase
until p f yields the result of applying
f
until
p holds.
Keep running an effectful computation until it returns a
Right value, collecting the Left's using a supplied
Monoid instance.