anchor.diff:          createHome = true;
           home = baseDir;
           useDefaultShell = true;
  +        uid = config.ids.uids.hydra;
         };
   
       users.extraUsers.hydra-queue-runner =
  
positive.code:         group = "hydra";
          useDefaultShell = true;
          home = "${baseDir}/queue-runner"; # really only to keep SSH happy
        };
  
      users.extraUsers.hydra-www =
        { description = "Hydra web server";
          group = "hydra";
          useDefaultShell = true;
        };
  
      nix.trustedUsers = [ "hydra-queue-runner" ];
  
negative.code: 
    config = mkIf cfg.enable {
  
      users.extraGroups.hydra = {
        gid = config.ids.gids.hydra;
      };
  
      users.extraUsers.hydra =
        { description = "Hydra";
  