{lib, ... }:
{
  options.virtualisation.isVmVariant = lib.mkOption {
    type = lib.types.bool;
    default = false;
  };
  # to be used with 'lib.mkIf (!config.virtualisation.isVmVariant)'
  config.virtualisation.vmVariant = {
    virtualisation.isVmVariant = true;
  };
}