until -package:numeric-prelude -package:util -package:xmonad-contrib -package:LambdaHack -package:base-compat -package:hledger-web -package:classy-prelude -package:base -package:utility-ht -package:conferer -package:dimensional package:selective
Keep running an effectful computation until it returns a
Right value, collecting the Left's using a supplied
Monoid instance.