anchor.diff:  #, docbook-xsl
   , fetchurl
   , gettext
  +, gperf
   , intltool
  +, lib
   
   , fontconfig
   , freetype
  
positive.code:     #"--${boolEn (snowball-stemmer != null)}-stemmer"
    ];
  
    meta = with stdenv.lib; {
      description = "Objects & helper methods to read & write AppStream metadata";
      homepage = https://github.com/hughsie/appstream-glib;
      license = licenses.lgpl21Plus;
  
negative.code:     boolEn;
  in
  stdenv.mkDerivation rec {
    name = "appstream-glib-0.6.13";
  
    src = fetchurl {
      url = "https://people.freedesktop.org/~hughsient/appstream-glib/"
        + "releases/${name}.tar.xz";
      sha256 = "1a3734b2cdaab55ad63c6e3ee31026fdceb122cecae39f9f7126a0305e8836bf";
    };
  
    nativeBuildInputs = [
      #docbook_xml_dtd_43
      #docbook-xsl
      gettext
      gperf
      intltool
    ];
  
  