anchor.diff:    ];
   
     nativeBuildInputs = [
  +    perl
  +    perlPackages.HTMLParser
       pkgconfig
       xxd
     ] ++ stdenv.lib.optionals (uilib == "gtk") [
       wrapGAppsHook
     ];
   
  -  buildInputs = [ libpng openssl curl gtk2 check libxml2 libidn perl
  -    nettools perlPackages.HTMLParser libXcursor libXrandr makeWrapper SDL
  +  buildInputs = [ libpng openssl curl gtk2 check libxml2 libidn
  +    libXcursor libXrandr makeWrapper SDL
       libwebp
  -    buildsystem
       nsgenbind
       libnsfb
       libwapcaplet
  
positive.code:   name = "netsurf-${version}";
    version = "3.9";
  
    # UI libs incldue Framebuffer, and gtk
  
    src = fetchurl {
      url = "http://download.netsurf-browser.org/netsurf/releases/source/netsurf-${version}-src.tar.gz";
      sha256 = "1hzcm2s2wh5sapgr000lg63hcdbj6hyajxl43xa1x80kc5piqbyp";
  
negative.code: 
    makeFlags = [
      "PREFIX=$(out)"
      "TARGET=${uilib}"
    ];
  
  