anchor.diff:  
     preConfigure = ''
       patchShebangs .
  -  '';
  -
  -  postInstall = ''
  -    mkdir -p $out/share/gsettings-schemas/$name
  -    mv $out/share/glib-2.0 $out/share/gsettings-schemas/$name/
     '';
   
     preFixup = ''
  
positive.code:                   which udev libgudev gnome3.gexiv2 hicolor_icon_theme
                    libraw json_glib gettext desktop_file_utils glib lcms2 gdk_pixbuf librsvg
                    makeWrapper gnome_doc_utils gnome3.rest
                    gnome3.defaultIconTheme ];
  
    meta = with stdenv.lib; {
      description = "Popular photo organizer for the GNOME desktop";
  
negative.code: { fetchurl, stdenv, m4, glibc, gtk3, libexif, libgphoto2, libsoup, libxml2, vala, sqlite
  , webkitgtk, pkgconfig, gnome3, gst_all_1, which, udev, libgudev, libraw, glib, json_glib
  , gettext, desktop_file_utils, lcms2, gdk_pixbuf, librsvg, makeWrapper
  , gnome_doc_utils, hicolor_icon_theme, itstool }:
  
  # for dependencies see http://www.yorba.org/projects/shotwell/install/
  
  stdenv.mkDerivation rec {
    version = "${major}.${minor}";
    major = "0.23";
    minor = "4";
    name = "shotwell-${version}";
  
    src = fetchurl {
      url = "mirror://gnome/sources/shotwell/${major}/${name}.tar.xz";
      sha256 = "1hnl0lxibklmr1cy95ij1b3jgvdsw4zlcja53ngfxvlsi2r2bbxi";
    };
  
    NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/glib-2.0 -I${glib.out}/lib/glib-2.0/include";
  