until -package:numeric-prelude -package:util -package:xmonad-contrib -package:base-compat -package:Cabal -package:linear-base -package:numhask -package:elerea -package:base -package:faktory -package:snap-core 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.