{
  den.aspects = {
    libvirtd-host = {
      nixos = 
        { pkgs, ... }:
        {
          virtualisation = {
            libvirtd = {
              enable = true;
              qemu = {
                package = pkgs.qemu_kvm;
                vhostUserPackages = with pkgs; [ virtiofsd ];
                runAsRoot = true;
                swtpm.enable = true;
              };
            };
            spiceUSBRedirection = {
              enable = true;
            };
          };
          programs.virt-manager.enable = true;
          environment.systemPackages = [
            pkgs.qemu
            pkgs.pciutils
          ];
          users.users.qemu-libvirtd.group = "qemu-libvirtd";
          users.groups.qemu-libvirtd = { };
        };
      };
    };
}