Minimal NixOS systemd-nspawn containers

As I’ve mentioned before on this blog, I really like using Nix and NixOS to manage and deploy my systems. Now that I’m doing more projects than ever, I’ve started experiencing some friction with the monolithic deployment model of NixOS—I have multiple git repositories in which I’m developing various projects and I don’t want to constantly redeploy my main DigitalOcean droplet NixOS config every…