anchor.diff:    rpath = lib.makeLibraryPath [
       alsaLib
       atk
  +    at-spi2-atk
       cairo
       cups
       dbus
  
positive.code:              --set-rpath ${rpath}:$out/libexec $out/libexec/signal-desktop
      wrapProgram $out/libexec/signal-desktop \
        --prefix XDG_DATA_DIRS : "${gtk3}/share/gsettings-schemas/${gtk3.name}/" \
        ${customLanguageWrapperArgs} \
        "''${gappsWrapperArgs[@]}"
  
  
negative.code: { stdenv, lib, fetchurl, dpkg, wrapGAppsHook
  , gnome2, gtk3, atk, at-spi2-atk, cairo, pango, gdk_pixbuf, glib, freetype, fontconfig
  , dbus, libX11, xorg, libXi, libXcursor, libXdamage, libXrandr, libXcomposite
  , libXext, libXfixes, libXrender, libXtst, libXScrnSaver, nss, nspr, alsaLib
  , cups, expat, udev, libnotify
  