Virtualisation

This submodule contains NixOS modules for configuring virtualisation technologies.

These are defined under provision.virt, which helps to configure:

• MicroVM wrapper
• containerisation (i.e. docker, podman)
• qemu guest options

Module Options Reference for provision.virt

QEMU

There is a shortcut for the equivalent of importing nixpkgs’ guest-agent

provision.virt.qemu.guestAgent = true;

There are some quirky qemu-user magic optimisations that I found somewhere (lost in time) and have tested a little bit at provision.virt.qemu.smart, your mileage may vary.

Libvirt

There are some small integrations to make running libvirt a bit easier.

⚠ At the moment, this module is mostly legacy code, in general you should not use ⚠ it unless you already are (and don’t want to move). It will be eventually ⚠ removed, and replaced with a cleaner setup.

This enabled libvirtd and creates a bridge network called libvirt-default on enp1s0 with a subnet of 192.168.15.0/24. (see how badly this is hardcoded)

provision.virt.libvirt = {
  enable = true; # enables libvirtd + Spice USB emulation
  legacy.networking.enable = true;
};