Comment by wereHamster

I was just looking into microvm (via microvm.nix) to isolate coding agents. While the machine starts quickly, as in the article, the userspace (nixos) takes much longer. I'd probably need to spend some time to strip the system of all non-essential services. I also briefly considered running the agent harness as PID 0. That would speed things up, but also mean a lot of responsibility on my end. My biggest struggle is how to imperatively manage agent microvms on nixos. microvm.nix isn't really well suited for that task. For longer-running VMs, that I can manage via my nixos config, I'm quite happy with microvm.nix. Related article by Michael Stapelberg: https://michael.stapelberg.ch/posts/2026-02-01-coding-agent-...