I've read up on NixOS. I *really* like the concept: elegant, bulletproof, and deterministic. However, I'm not convinced the juice is worth the squeeze for me. I don't plan to blow away my laptop and rebuild often, and I'll only be using this one machine.

Maybe I can be convinced, still. 😉  

 I’m loving Qubes but it has a learning curve 

 I've read up on it, but that definitely seems like Extra Hard Mode. 😅