anchor.diff:  
   let
     cfg = config.services.chrony;
  +  chronyPkg = cfg.package;
   
     stateDir = cfg.directory;
     driftFile = "${stateDir}/chrony.drift";
  
positive.code:         description = ''
            Whether to synchronise your machine's time using chrony.
            Make sure you disable NTP if you enable this service.
          '';
        };
  
  
negative.code:         after    = [ "network.target" ];
          conflicts = [ "ntpd.service" "systemd-timesyncd.service" ];
  
          path = [ chronyPkg ];
  
          unitConfig.ConditionCapability = "CAP_SYS_TIME";
          serviceConfig =
            { Type = "simple";
              ExecStart = "${chronyPkg}/bin/chronyd ${chronyFlags}";
  
              ProtectHome = "yes";
              ProtectSystem = "full";
  