Comment by mech422
This(1)(2) might hold you over for a bit: "Genode's microkernel architecture, capability-based security, sandboxed device drivers, and virtual machines in a novel operating system for commodity PC hardware and the PinePhone. Sculpt is used as day-to-day OS by the Genode developers. "
It looks pretty neat - could be fun to play with!
2) https://genode.org/download/sculpt
They
> Genode is based on a recursive system structure. Each program runs in a dedicated sandbox and gets granted only those access rights and resources that are needed for its specific purpose. Programs can create and manage sub-sandboxes out of their own resources, thereby forming hierarchies where policies can be applied at each level.
Damn, I've been hoping someone would create something like this for quite some time!