anchor.diff:   stdenv.mkDerivation rec {
     pname = "minecraft-launcher";
   
  -  version = "2.1.5965";
  +  version = "2.1.7658";
   
     src = fetchurl {
       url = "https://launcher.mojang.com/download/linux/x86_64/minecraft-launcher_${version}.tar.gz";
  -    sha256 = "0wlc49s541li4cbxdmlw8fp34hp1q9m6ngr7l5hfdhv1i13s5845";
  +    sha256 = "10sng7l0q9r98zwifjmy50nyh65ny4djmacz8158hffcsfcx93px";
     };
   
     icon = fetchurl {
  
positive.code:     glib
      gnome2.GConf
      gnome2.pango
      gtk2-x11
      nspr
      nss
  
negative.code: , cups
  , dbus
  , atk
  , gtk3-x11
  , gtk2-x11
  , gdk-pixbuf
  , glib
  