anchor.diff:      systemd.services.sysstat = {
         description = "Resets System Activity Logs";
         wantedBy = [ "multi-user.target" ];
  -      preStart = "test -d /var/log/sa || mkdir -p /var/log/sa";
   
         serviceConfig = {
           User = "root";
           RemainAfterExit = true;
           Type = "oneshot";
           ExecStart = "${pkgs.sysstat}/lib/sa/sa1 --boot";
  +        LogsDirectory = "sa";
         };
       };
   
  
positive.code: in {
    options = {
      services.sysstat = {
        enable = mkOption {
          type = types.bool;
          default = false;
          description = ''
            Whether to enable sar system activity collection.
          '';
        };
  
        collect-frequency = mkOption {
          default = "*:00/10";
          description = ''
            OnCalendar specification for sysstat-collect
  
negative.code:       };
  
        collect-args = mkOption {
          type = types.str;
          default = "1 1";
          description = ''
            Arguments to pass sa1 when collecting statistics
  