anchor.diff:    postInstall = ''
       wrapProgram "$out/bin/shotwell" \
        --set GDK_PIXBUF_MODULE_FILE "$GDK_PIXBUF_MODULE_FILE" \
  -     --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS:${gtk3}/share:$out/share"
  +     --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS:${gnome3.gsettings_desktop_schemas}/share:${gtk3}/share:$out/share"
     '';
   
   
     buildInputs = [ m4 glibc gtk3 libexif libgphoto2 libsoup libxml2 vala sqlite webkit pkgconfig
                     gst_all_1.gstreamer gst_all_1.gst-plugins-base gnome3.libgee which udev gnome3.gexiv2
                     libraw rest json_glib gettext desktop_file_utils glib lcms2 gdk_pixbuf librsvg
  -                  makeWrapper ];
  +                  makeWrapper gnome_doc_utils ];
   
     meta = with stdenv.lib; {
       description = "Popular photo organizer for the GNOME desktop";
  
positive.code: { fetchurl, stdenv, m4, glibc, gtk3, libexif, libgphoto2, libsoup, libxml2, vala, sqlite, webkit
  , pkgconfig, gnome3, gst_all_1, which, udev, libraw, glib, json_glib, gettext, desktop_file_utils
  , lcms2, gdk_pixbuf, librsvg, makeWrapper }:
  
  # for dependencies see http://www.yorba.org/projects/shotwell/install/
  
  
negative.code:     buildInputs = [ pkgconfig glib libsoup ];
    };
  in stdenv.mkDerivation rec {
    version = "0.18.0";
    name = "shotwell-${version}";
  
    src = fetchurl {
      url = "mirror://gnome/sources/shotwell/0.18/${name}.tar.xz";
      sha256 = "0cq0zs13f3f4xyz46yvj4qfpm5nh4ypds7r53pkqm4a3n8ybf5v7";
    };
  
    NIX_CFLAGS_COMPILE = "-I${glib}/include/glib-2.0 -I${glib}/lib/glib-2.0/include";
  