Force-cancelling a task?

Stream: lean4

[František Silváši]

Is there a simple way to cancel a running task 'un-cooperatively'? The function IO.cancel task requires that task cooperates and handles its own IO.checkCanceled. Currently my task is IO.asTask <| IO.Process.run someProcess and there's no simple way (AFAIK) to check for the cancellation request. I basically run a couple of processes and want to cancel the ones that don't terminate within a given timeout, as I am not interested in their outputs thereafter.

EDIT: I still don't know how to force-cancel a process, but I implemented a simple workaround that calls Task.spawn and handles timeouts explicitly / gets cancelled cooperatively with IO.cancel, a'la IO.Process.runWithTimeout.