desktop_nixos_config_legacy/home/apps/virtmanager.nix

{ config, lib, pkgs, ... }:
with lib;
let
  cfg = config.local.apps.virtmanager;
in
{
  options.local.apps.virtmanager.enable = mkEnableOption "Virtmanager";
  config = mkIf cfg.enable {
    home.packages = with pkgs; [
      virt-manager
    ];
  };
}