anchor.diff:  stdenv.mkDerivation rec {
     name = "${product}-${version}";
     product = "vivaldi";
  -  version = "1.13.1008.34-1";
  +  version = "1.14.1077.45-1";
   
     src = fetchurl {
       url = "https://downloads.vivaldi.com/stable/${product}-stable_${version}_amd64.deb";
  -    sha256 = "18p5n87n5rkd6dhdsf2lvcyhg6ipn0k4p6a79dy93vsgjmk4bvw2";
  +    sha256 = "0b4iviar927jx6xqyrzgzb3p4p617zm4an1np8jnldadq2a0p56d";
     };
   
     unpackPhase = ''
  
positive.code: , freetype, fontconfig, libXft, libXrender, libxcb, expat, libXau, libXdmcp
  , libuuid, xz
  , gstreamer, gst-plugins-base, libxml2
  , glib, gtk3, pango, gdk_pixbuf, cairo, atk, gnome3
  , nss, nspr
  , patchelf, makeWrapper
  , proprietaryCodecs ? false, vivaldi-ffmpeg-codecs ? null
  
negative.code:   buildInputs = [
      stdenv.cc.cc stdenv.cc.libc zlib libX11 libXt libXext libSM libICE libxcb
      libXi libXft libXcursor libXfixes libXScrnSaver libXcomposite libXdamage libXtst libXrandr
      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;
  