anchor.diff:    primeEnabled = syncCfg.enable || offloadCfg.enable;
     nvidiaPersistencedEnabled =  cfg.nvidiaPersistenced;
     nvidiaSettings = cfg.nvidiaSettings;
  +  busIDType = types.strMatching "([[:print:]]+\:[0-9]{1,3}\:[0-9]{1,2}\:[0-9])?";
   in
   
   {
  
positive.code:     };
  
      hardware.nvidia.prime.amdgpuBusId = mkOption {
        type = types.strMatching "[[:print:]]+\:[0-9]{1,3}\:[0-9]{1,2}\:[0-9]";
        default = "";
        example = "PCI:4:0:0";
        description = ''
  
negative.code:     };
  
      hardware.nvidia.prime.nvidiaBusId = mkOption {
        type = busIDType;
        default = "";
        example = "PCI:1:0:0";
        description = ''
  