anchor.diff:  { stdenv, fetchurl, meson, ninja, pkgconfig, gettext, gnome3, glib, gtk3, pango, wrapGAppsHook
  -, gobjectIntrospection, gjs, gdk_pixbuf, librsvg }:
  +, gobjectIntrospection, gjs, gdk_pixbuf, librsvg, libunistring }:
   
   stdenv.mkDerivation rec {
     name = "gnome-characters-${version}";
  
positive.code:   };
  
    nativeBuildInputs = [ meson ninja pkgconfig gettext wrapGAppsHook gobjectIntrospection ];
    buildInputs = [ glib gtk3 gjs pango gnome3.gsettings-desktop-schemas gnome3.defaultIconTheme ];
  
    mesonFlags = [
      "-Ddbus_service_dir=${placeholder "out"}/share/dbus-1/services"
  
negative.code:     sha256 = "14q92ysg7krawxlwv6ymgsxz2plk81wgfz6knlma7lm13jsczmf0";
    };
  
    postPatch = ''
      chmod +x meson_post_install.py # patchShebangs requires executable file
      patchShebangs meson_post_install.py
    '';
  
    passthru = {
      updateScript = gnome3.updateScript {
        packageName = "gnome-characters";
  