anchor.diff:    # No tests included
     doCheck = false;
   
  +  pythonImportsCheck = [ "usb" ];
  +
     meta = with stdenv.lib; {
       description = "Python USB access module (wraps libusb 1.0)";  # can use other backends
       homepage = "https://pyusb.github.io/pyusb/";
  
positive.code:     inherit pname version;
      sha256 = "d69ed64bff0e2102da11b3f49567256867853b861178689671a163d30865c298";
    };
  
    # Fix the USB backend library lookup
    postPatch =
  
negative.code: { stdenv, fetchPypi, buildPythonPackage, libusb1, setuptools_scm }:
  
  buildPythonPackage rec {
    pname = "pyusb";
  