It depends on other external circumstances, but other benefits for nix would be: - they could pull less data (nix configuration is smaller than docker binary bl

It depends on other external circumstances, but other benefits for nix would be: - they could pull less data (nix configuration is smaller than docker binary blob), - nix is entirely deterministic (docker depends on whenever that image was built), - nix implicitly its components for if there are many of these dev shells, and also with your main system. Yes, Dockerfiles can also be chained but if the later levels of these are rebuilt, the the earlier ones better have new enough versions installed (i.e it's a can of worms and the entire chain needs to be rebuilt anyway)