virtualisation.libvirtd.enable = true;

  # https://nixos.wiki/wiki/Libvirt
  virtualisation.libvirtd = {
    enable = true;
    qemu = {
      package = pkgs.qemu_kvm;
      runAsRoot = true;
      swtpm.enable = true;
      ovmf = {
        enable = true;
        packages = [ pkgs.OVMFFull.fd ];
      };
    };
  };