anchor.diff:  };
   
   stdenv.mkDerivation rec {
  -  name = "gst-plugins-base-1.6.3";
  +  name = "gst-plugins-base-1.8.0";
   
  -  src = fetchurl {
  -    url = "http://gstreamer.freedesktop.org/src/gst-plugins-base/${name}.tar.xz";
  -    sha256 = "0xbskifk95rw7jd85sqjrmqh2kys1bpi0inrxyapx1x4vf7ly5dn";
  +  src = fetchurl rec {
  +    url = "https://gstreamer.freedesktop.org/src/gst-plugins-base/${name}.tar.xz";
  +    sha256Url = "${url}.sha256sum";
  +    sha256 = "abc0acc1d15b4b9c97c65cd9689bd6400081853b9980ea428d3c8572dd791522";
     };
   
     nativeBuildInputs = [
  
positive.code:     (enFlag "xshm" (xorg.libXext != null) null)
      (enFlag "alsa" (alsa-lib != null) null)
      (enFlag "cdparanoia" (cdparanoia != null) null)
      (enFlag "libvisual" (libvisual != null) null)
      (enFlag "ogg" (libogg != null) null)
      (enFlag "pango" (pango != null) null)
      (enFlag "theora" (libtheora != null) null)
      (enFlag "vorbis" (libvorbis != null) null)
      (enFlag "gio_unix_2_0" (glib != null) null)
      "--disable-freetypetest"
      "--with-audioresample-format=float"
    ];
  
  
negative.code:   ];
  
    configureFlags = [
      "--disable-maintainer-mode"
      "--enable-nls"
      "--enable-rpath"
      "--disable-fatal-warnings"
      "--disable-extra-checks"
      "--disable-debug"
      "--disable-profiling"
      "--disable-valgrind"
  