Hi, Since yesterday, I’m getting an error with virtualisation.libvirtd.enable. It reports a “failed assertion: The ‘virtualisation.libvirtd.qemu.ovmf’ submodule has been removed”. Indeed, this option which exists in 25.05 does not exist in unstable, which is what I am following. I have made no chan…

[image] biscotty: Hi, Since yesterday, I’m getting an error with virtualisation.libvirtd.enable. It reports a “failed assertion: The ‘virtualisation.libvirtd.qemu.ovmf’ submodule has been removed”. Indeed, this option which exists in 25.05 does not exist in unstable, which is what I am followin…

I read through the thread and I kind of understood it, although it is still unclear how to enable libvirt and make the error message go away. I just want to be able to run vms from time to time. Perhaps I don’t even need it?

What is your config? I got that and removed the OMVF submodule and I’m back to normally. Though I don’t have any workloads currently on it (since mine are periodic and transient).

I’m not explicitly adding the submodule, so I don’t know how to remove it. If I remove libvirt.enable = true the error goes away. virtualisation = { libvirtd.enable = true; podman = { enable = true; dockerCompat = true; defaultNetwork.settings.dns_enabled = true; }; …

I wonder if it’s a bug in nixpkgs on the version you’re on, potentially. I had updated my nixpkgs recently, which had me have to remove that submodule which fixed the message. However, I reverted in the face of the cmake build failures tearing through the ecosystem. Have you updated whatever chan…

I use flakes and am pinned to unstable.

Is it still happening after flake updates? If so, got your flake posted somewhere? This sounds not like a config issue but genuine bug, where something else has that option set that shouldn’t.

Thanks for the replies. I’m actually not using it anymore, so haven’t pursued the issue. For a lark, I tried adding it back to my configuration, but I get the same error. Since I don’t need it now, I don’t really want to spend time pursuing it unless others experience it as well.

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Libvirtd error in unstable

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ookhoi October 7, 2025, 3:44pm 2

Could be:

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