anchor.diff:      rm -rf $out/installer
     '';
   
  +  passthru.withPlugins = f: buildEnv {
  +    name = "${roundcube.name}-with-plugins";
  +    paths = (f roundcubePlugins) ++ [ roundcube ];
  +  };
  +
     meta = {
       description = "Open Source Webmail Software";
       maintainers = with stdenv.lib.maintainers; [ vskilet ];
  
positive.code:     platforms = stdenv.lib.platforms.all;
    };
  }
  
  
negative.code: { lib, stdenv, fetchzip, buildEnv, roundcube, roundcubePlugins }:
  let
    version = "1.3.8";
  in
  