anchor.diff:    patches = [
       (substituteAll {
         src = ./fix-portaudio-library-path.patch;
  -      portaudio = "${portaudio}/lib/libportaudio.so.2";
  +      portaudio = "${portaudio}/lib/libportaudio${stdenv.hostPlatform.extensions.sharedLibrary}";
       })
     ];
   
  
positive.code: { lib
  , buildPythonPackage
  , fetchPypi
  , isPy27
  
negative.code: 
  buildPythonPackage rec {
    pname = "sounddevice";
    version = "0.4.4";
    disabled = isPy27;
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "sha256-9pD1qkGKViaMe9vJfWl8ha3QE0xcedRLiirXobhdp4k=";
    };
  
    propagatedBuildInputs = [ cffi numpy portaudio ];
  