anchor.diff:      "--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)
  
positive.code:     # TODO: libiptcdata support
      "--disable-libiptcdata"
      (enFlag "exempi" (exempi != null) null)
      "--enable-meegotouch"
      "--enable-miner-fs"
      "--enable-extract"
      "--enable-tracker-writeback"
      "--disable-miner-apps"
      "--enable-user-guides"
      # TODO: miner-rss support
      "--disable-miner-rss"
      # evolution currently requires webkit-2.4
  
negative.code: 
  stdenv.mkDerivation rec {
    name = "tracker-${version}";
    versionMajor = "1.8";
    versionMinor = "0";
    version = "${versionMajor}.${versionMinor}";
  
    src = fetchurl {
      url = "mirror://gnome/sources/tracker/${versionMajor}/${name}.tar.xz";
      sha256 = "a11f31a373bfec3abae38ae719d0a59f666f1f067d8789ade2ed7032a152907d";
    };
  
    propagatedUserEnvPkgs = [
  