anchor.diff:    buildInputs = [
       stdenv.cc.cc stdenv.cc.libc zlib libX11 libXt libXext libSM libICE libxcb
       libXi libXft libXcursor libXfixes libXScrnSaver libXcomposite libXdamage libXtst libXrandr
  -    atk alsaLib dbus_libs cups gtk3 gdk_pixbuf libexif ffmpeg systemd
  +    atk at_spi2_atk alsaLib dbus_libs cups gtk3 gdk_pixbuf libexif ffmpeg systemd
       freetype fontconfig libXrender libuuid expat glib nss nspr
       gstreamer libxml2 gst-plugins-base pango cairo gnome3.gconf
     ] ++ stdenv.lib.optional proprietaryCodecs vivaldi-ffmpeg-codecs;
  
positive.code: stdenv.mkDerivation rec {
    name = "${product}-${version}";
    product = "vivaldi";
    version = "1.13.1008.34-1";
  
    src = fetchurl {
      url = "https://downloads.vivaldi.com/stable/${product}-stable_${version}_amd64.deb";
      sha256 = "18p5n87n5rkd6dhdsf2lvcyhg6ipn0k4p6a79dy93vsgjmk4bvw2";
    };
  
    unpackPhase = ''
  
negative.code: , freetype, fontconfig, libXft, libXrender, libxcb, expat, libXau, libXdmcp
  , libuuid, xz
  , gstreamer, gst-plugins-base, libxml2
  , glib, gtk3, pango, gdk_pixbuf, cairo, atk, at_spi2_atk, gnome3
  , nss, nspr
  , patchelf, makeWrapper
  , proprietaryCodecs ? false, vivaldi-ffmpeg-codecs ? null
  