anchor.diff:      platforms = stdenv.lib.platforms.all;
     };
   }
  -
  
positive.code: { lib, stdenv, fetchzip }:
  let
    version = "1.3.8";
  in
  
negative.code:     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 ];
  