Code review comment for lp:~michihenning/unity-scopes-api/scope-cache-dir

> My point was that you can apply only one apparmor profile, so if there are
> multiple runtimes and scopes in a single process, they either have to share
> the apparmor template or need to be unconfined, otherwise things won't work
> anyway. So the prefix is indeed per process, not per runtime.

Ah, yes, that's true. I'm still trying to avoid environment variables though,
for the simple reason that they are global hidden state. The less we use
env vars, the better, IMO.