anchor.diff:  
   let
     cfg = config.services.logrotate;
  +  inherit (config.users) groups;
   
     pathOpts = { name, ... }:  {
       options = {
  
positive.code: 
        path = mkOption {
          type = with types; either str (listOf str);
          description = ''
            The path to log files to be rotated.
            Spaces are allowed and normal shell quoting rules apply,
  
negative.code:       }
      ) cfg.paths;
  
      services.logrotate = {
        paths = {
          "/var/log/btmp" = {
            frequency = mkDefault "monthly";
            keep = mkDefault 1;
            extraConfig = ''
              create 0660 root ${groups.utmp.name}
            '';
          };
          "/var/log/wtmp" = {
            frequency = mkDefault "monthly";
            keep = mkDefault 1;
            extraConfig = ''
              create 0664 root ${groups.utmp.name}
            '';
          };
        };
      };
  
      systemd.services.logrotate = {
        description = "Logrotate Service";
        wantedBy = [ "multi-user.target" ];
  