anchor.diff:  with lib;
   let
     stateDir = "/var/lib/chrony";
  -
  -  keyFile = "${stateDir}/chrony.keys";
   
     cfg = config.services.chrony;
   
  
positive.code:     "@${pkgs.chrony}/bin/chronyd" "chronyd"
      "-n"
      "-m"
      "-u" "chrony"
      "-f" cfgFile
    ] ++ cfg.extraCmdline;
  
negative.code:       initstepslew 30 ${concatStringsSep " " cfg.initstepslew.servers}
      ''}
  
      driftfile ${stateDir}/drift
      dumpdir ${stateDir}
      dumponexit
  
      hwclockfile /etc/adjtime
      rtcdevice /dev/rtc
      rtcfile ${stateDir}/rtc
  
      ${cfg.extraConfig}
    '';
  