anchor.diff: -{ stdenv, lib, fetchurl, dpkg, gnome3, gtk3, atk, cairo, pango, gdk_pixbuf, glib, freetype,
  +{ stdenv, lib, fetchurl, dpkg, wrapGAppsHook, gnome3, gtk3, 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
  
positive.code:       # Patch signal
        patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
                 --set-rpath ${rpath}:$out/libexec $out/libexec/signal-desktop
  
        # Symlink to bin
        mkdir -p $out/bin
  
negative.code:         throw "Signal for Desktop is not currently supported on ${stdenv.system}";
  
      phases = [ "unpackPhase" "installPhase" ];
      nativeBuildInputs = [ dpkg wrapGAppsHook ];
      unpackPhase = "dpkg-deb -x $src .";
      installPhase = ''
        mkdir -p $out
  