this post was submitted on 29 Jan 2026
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Why VMs instead of contsiners? Seems like way more processing overhead.
Eh... Not really. Qemu does a really good job with VM virtualizarion.
I believe I could easily build containers instead of VMs from the nix config, but I actually do like having a full VM: since it's running a full OS instead of an app, all the usual nix tooling just works on it.
Also: In my day job, I actually have to deal quite a bit with containers (and kubernetes), and I just... don't like it.
Yeah, just wondered because containers just hook into the kernal in a way that doesn't have overhead. Where as a VM has to emulate the entire OS. But hey I get it, fixing stuff inside the container can be a pain