anchor.diff:  
         # Uid/gid that the daemon runs under.
         nagios_user=nagios
  -      nagios_group=nogroup
  +      nagios_group=nagios
   
         # Misc. options.
         illegal_macro_output_chars=`~$&|'"<>
  
positive.code: 
        serviceConfig = {
          User = "nagios";
          Restart = "always";
          RestartSec = 2;
          PermissionsStartOnly = true;
  
negative.code: 
        preStart = ''
          mkdir -m 0755 -p ${nagiosState} ${nagiosLogDir}
          chown -R nagios:nagios ${nagiosState} ${nagiosLogDir}
        '';
  
        script = ''
  