anchor.diff:  { config, lib, stdenv, fetchurl, gettext, meson, ninja, pkg-config, perl, python3
  -, libiconv, zlib, libffi, pcre, libelf, gnome, libselinux, bash, gnum4, gtk-doc, docbook_xsl, docbook_xml_dtd_45
  +, libiconv, zlib, libffi, pcre, libelf, gnome, libselinux, bash, gnum4, gtk-doc, docbook_xsl, docbook_xml_dtd_45, libxslt
   # use util-linuxMinimal to avoid circular dependency (util-linux, systemd, glib)
   , util-linuxMinimal ? null
   , buildPackages
  
positive.code:     cp -r ${buildPackages.glib.devdoc} $devdoc
    '';
  
    checkInputs = [ tzdata desktop-file-utils shared-mime-info ];
  
    preCheck = optionalString doCheck ''
  
negative.code:     (buildPackages.meson.override {
        withDarwinFrameworksGtkDocPatch = stdenv.isDarwin;
      })
      ninja pkg-config perl python3 gettext gtk-doc docbook_xsl docbook_xml_dtd_45 libxml2 libxslt
    ];
  
    propagatedBuildInputs = [ zlib libffi gettext libiconv ];
  