anchor.diff:  { stdenv, fetchurl, fetchpatch, pkgconfig, libGL, glib, gdk-pixbuf, xorg, libintl
   , pangoSupport ? true, pango, cairo, gobject-introspection, wayland, gnome3
  -, mesa
  +, mesa, automake, autoconf
   , gstreamerSupport ? true, gst_all_1 }:
   
   let
  
positive.code:       url = https://bug787443.bugzilla-attachments.gnome.org/attachment.cgi?id=361056;
        sha256 = "09fyrdci4727fg6qm5aaapsbv71sf4wgfaqz8jqlyy61dibgg490";
      })
    ];
  
    outputs = [ "out" "dev" ];
  
    nativeBuildInputs = [ pkgconfig libintl ];
  
    configureFlags = [
      "--enable-introspection"
  
negative.code:     "--enable-wayland-egl-platform"
      "--enable-wayland-egl-server"
    ] ++ stdenv.lib.optional gstreamerSupport "--enable-cogl-gst"
    ++ stdenv.lib.optionals (!stdenv.isDarwin) [ "--enable-gles1" "--enable-gles2" ];
  
    propagatedBuildInputs = with xorg; [
        glib gdk-pixbuf gobject-introspection wayland mesa
  