And the reason I posted anything at all - a note to myself for the future. I'm working with people trying to provide this type of environment at work, and it seems to be an open problem for them.
Next time we interact I will now ask better questions
@brk I agree, it seems to work really well, and the user-mode type modification possibilities seem like a good compliment to containers. It's the first time I've used nix, I'll have to try it some more.
@finity I recently found out repl.it heavily uses nix to create their environments which is super cool! I think you can even `nix-shell -p` to get more functionality in their shells