anchor.diff:  
     enableParallelBuilding = true;
   
  -  installCheckInputs = [ python3 python3.pkgs.dbus-python python3.pkgs.pygobject3 xvfb_run dbus gjs ];
  +  installCheckInputs = [
  +    python3 python3.pkgs.dbus-python python3.pkgs.pygobject3 xvfb_run dbus gjs
  +  ];
   
     # needs to run after install because typelibs point to absolute paths
     doInstallCheck = false; # Failed to load shared library '/force/shared/libmock_service.so.0' referenced by the typelib
  
positive.code:   outputs = [ "out" "dev" "devdoc" ];
  
    propagatedBuildInputs = [ glib ];
    nativeBuildInputs = [ pkgconfig gettext libxslt docbook_xsl docbook_xml_dtd_42 libintl gobject-introspection vala gtk-doc ];
    buildInputs = [ libgcrypt ];
    # optional: build docs with gtk-doc? (probably needs a flag as well)
  
  
negative.code: { stdenv, fetchurl, fetchpatch, glib, pkgconfig, gettext, libxslt, python3
  , docbook_xsl, docbook_xml_dtd_42 , libgcrypt, gobject-introspection, vala
  , gtk-doc, gnome3, gjs, libintl, dbus, xvfb_run }:
  
  stdenv.mkDerivation rec {
    pname = "libsecret";
  