anchor.diff:  
     mainCfg = config.services.httpd;
   
  -  httpd = pkgs.apacheHttpd.override { mpm = mainCfg.multiProcessingModule; };
  +  httpd = mainCfg.apacheHttpd;
  +
  +  httpdConf = mainCfg.configFile;
   
     php = pkgs.php.override { apacheHttpd = httpd; };
   
  
positive.code:         ";
        };
  
        extraConfig = mkOption {
          default = "";
          description = "
            These configuration lines will be passed verbatim to the apache config
          ";
        };
  
  
negative.code:   '';
  
  
    confFile = pkgs.writeText "httpd.conf" ''
  
      ServerRoot ${httpd}
  
  