anchor.diff:  
   stdenv.mkDerivation rec {
     name = "tracker-${version}";
  -  versionMajor = "1.6";
  -  versionMinor = "1";
  +  versionMajor = "1.8";
  +  versionMinor = "0";
     version = "${versionMajor}.${versionMinor}";
   
     src = fetchurl {
       url = "mirror://gnome/sources/tracker/${versionMajor}/${name}.tar.xz";
  -    sha256 = "1vf1y2jn17yz70gfm5xsprydga67848izv3bymnq6js59wzxfgk5";
  +    sha256 = "a11f31a373bfec3abae38ae719d0a59f666f1f067d8789ade2ed7032a152907d";
     };
   
     propagatedUserEnvPkgs = [
  
positive.code:     "--disable-gtk-doc"
      "--disable-gtk-doc-html"
      "--disable-gtk-doc-pdf"
      "--enable-maemo"
      "--enable-journal"
      "--enable-libstreamer"
      "--enable-tracker-fts"
      "--disable-unit-tests"
      (enFlag "upower" (upower != null) null)
      "--disable-hal"
      (enFlag "network-manager" (networkmanager != null) null)
      (enFlag "libmediaart" (libmediaart != null) null)
  
negative.code:     "--enable-icu-charset-detection"
      (enFlag "libxml2" (libxml2 != null) null)
      "--enable-cfg-man-pages"
      #"--enable-generic-media-extractor="
      "--enable-unzip-ps-gz-files"
      (enFlag "poppler" (poppler != null) null)
      (enFlag "libgxps" (libgxps != null) null)
  