anchor.diff:  { stdenv
  -#, docbook_xml_dtd_43
  -#, docbook_xsl
   , fetchurl
   , gettext
   , intltool
  
positive.code: , util-linux_lib
  }:
  
  let
    inherit (stdenv.lib)
      enFlag;
  in
  
  stdenv.mkDerivation rec {
    name = "appstream-glib-0.5.12";
  
    src = fetchurl {
      url = "https://people.freedesktop.org/~hughsient/appstream-glib/"
          + "releases/${name}.tar.xz";
      sha256 = "39e1ad771f1a44a3d409618dc17600217ab398d06075f3029c8e96f4100d14ef";
    };
  
    nativeBuildInputs = [
      #docbook_xml_dtd_43
      #docbook_xsl
      gettext
      intltool
    ];
  
negative.code: 
    configureFlags = [
      "--enable-largefile"
      "--enable-introspection"
      "--enable-nls"
      "--disable-gtk-doc"
      "--disable-gtk-doc-html"
  