anchor.diff:  
   let
     arch =
  -    if      stdenv.system == "x86_64-linux" then
  +    if stdenv.system == "x86_64-linux" then
         "x86_64"
       else if stdenv.system == "i686-linux"   then
         "i386"
  
positive.code:     sha256 =
        if debug then
          if arch == "x86_64" then
            "0d37rwbqszl593pggph8pm8jwn05fppys7q8vk1jrk9jaz262iva"
          else
            "0lhngdx1q51kfpw3a961h9p9n1fnspk9pmg21i069hvd0h143arx"
        else
          if arch == "x86_64" then
            "1yasj9xzmb6ly9209b1hmrqrzxrr1bafsfjszsr3yf994hql6nzn"
          else
            "02vs12cm6fpl2fif1lij9y15m89wk6aizc8sbjiw6w59wixn3p9d";
    };
  
    nativeBuildInputs = [ unzip ];
  
negative.code: in
  stdenv.mkDerivation rec {
    name = "flashplayer-${version}";
    version = "25.0.0.148";
  
    src = fetchurl {
      url =
  