I'm happy with my usage of k8s, but I think it's unfortunate that current container abstractions are so oriented around imperative assembly in "layers". I want

I'm happy with my usage of k8s, but I think it's unfortunate that current container abstractions are so oriented around imperative assembly in "layers". I want a way to run NixOS in a container and have it feel first class— existing approaches either require installing everything every time with no caching, or pre-building and manually lifecycling your container (streamLayeredImage), or knowing upfront what you're going to need (Nixery).