anchor.diff:      }
     ];
   
  -  extraPath = [httpd] ++ pkgs.lib.concatMap (svc: svc.extraPath) allSubservices;
  +  extraPath = [httpd] ++ concatMap (svc: svc.extraPath) allSubservices;
   
     # Statically verify the syntactic correctness of the generated
     # httpd.conf.
  
positive.code: 
      ${
        let f = {name, value}: "env ${name}=${value}\n";
        in pkgs.lib.concatStrings (map f (pkgs.lib.concatMap (svc: svc.globalEnvVars) allSubservices))
      }
  
      env PATH=${pkgs.coreutils}/bin:${pkgs.gnugrep}/bin:${pkgs.lib.concatStringsSep ":" (pkgs.lib.concatMap (svc: svc.extraServerPath) allSubservices)}
  
negative.code:         makeVirtualHost = vhostIn:
            let
              # Fill in defaults for missing options.
              vhost = addDefaultOptionValues perServerOptions vhostIn;
            in ''
              <VirtualHost *:*>
                  ${perServerConf false vhost}
  