anchor.diff:      #"--${boolEn (snowball-stemmer != null)}-stemmer"
     ];
   
  -  meta = with stdenv.lib; {
  +  passthru = {
  +    srcVerification = fetchurl {
  +      inherit (src)
  +        outputHash
  +        outputHashAlgo
  +        urls;
  +      pgpKeyFingerprint = "C12B 8963 4A18 D2C3 F8B3  6C4C F09D 2D23 7A47 1537";
  +      failEarly = true;
  +    };
  +  };
  +
  +  meta = with lib; {
       description = "Objects & helper methods to read & write AppStream metadata";
       homepage = https://github.com/hughsie/appstream-glib;
       license = licenses.lgpl21Plus;
  
positive.code:     boolEn;
  in
  stdenv.mkDerivation rec {
    name = "appstream-glib-0.6.5";
  
    src = fetchurl {
      url = "https://people.freedesktop.org/~hughsient/appstream-glib/"
        + "releases/${name}.tar.xz";
      sha256 = "b6b77540b03ca56d7a8493d5f50ded747b6033e0437d8e4c516b5228e27b2a1a";
    };
  
    nativeBuildInputs = [
      #docbook_xml_dtd_43
      #docbook-xsl
      gettext
      intltool
    ];
  
  
negative.code: #, docbook-xsl
  , fetchurl
  , gettext
  , gperf
  , intltool
  , lib
  
  , fontconfig
  , freetype
  