anchor.diff:  { stdenv
   , buildPythonPackage
   , fetchPyPi
  +, lib
   
   , attrs
   , pyasn1
  
positive.code: }:
  
  let
    inherit (stdenv.lib)
      optionals;
  
    version = "16.0.0";
  in
  buildPythonPackage rec {
    name = "service_identity-${version}";
  
negative.code:   src = fetchPyPi {
      package = "service_identity";
      inherit version;
      sha256 = "4001fbb3da19e0df22c47a06d29681a398473af4aa9d745eca525b3b2c2302ab";
    };
  
    propagatedBuildInputs = [
  