anchor.diff:    ];
   
     buildInputs = [
  -    libxfce4util
       libxfce4ui
       xfce4-panel
  -    gtk2
  -    exo # needs exo with gtk2 support
  +    exo
       gnutls
       libgcrypt
     ];
  
positive.code: { lib, stdenv, fetchurl, pkg-config, intltool, libxfce4util, xfce4-panel, libxfce4ui,
    gtk2, exo, gnutls, libgcrypt, xfce }:
  
  let
    category = "panel-plugins";
  
negative.code:   meta = with lib; {
      homepage = "https://docs.xfce.org/panel-plugins/xfce4-mailwatch-plugin";
      description = "Mail watcher plugin for Xfce panel";
      license = licenses.gpl2Only;
      platforms = platforms.linux;
      maintainers = [ ];
    };
  