I have a pretty insane thing where I patched the screen sharing binary and hand rolled a dummy MDN so I can have multiple profiles logged in at once on my Mac Studio. Then have screen share of diff profiles in diff "windows". Was for some ML data gathering / CV training.

It's pretty neat, screen sharing app is extremely high quality these days, I can barely notice a diff unless watching video. Almost feels like Firefox containers at OS level.

Have thought that could be a pretty efficient way to have restricted unrestricted convenient AI access. Maybe I'll get around to that one day.

I use Nix shells to give it the tools it wants.

If it wants to do system-level tests, then I make sure my project has Qemu-based tests.