until -package:numeric-prelude -package:util -package:xmonad-contrib -package:base-compat -package:prelude-compat -package:basic-prelude -package:clash-prelude -package:monad-loops -package:foundation -package:LambdaHack 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.