anchor.diff:  { stdenv
   , buildPythonPackage
   , fetchPyPi
  +, lib
   
   , attrs
   , pyasn1
  
positive.code:   src = fetchPyPi {
      package = "service_identity";
      inherit version;
      sha256 = "0630e222f59f91f3db498be46b1d879ff220955d7bbad719a5cb9ad14e3c3036";
    };
  
    propagatedBuildInputs = [
  
negative.code: }:
  
  let
    inherit (lib)
      optionals;
  
    version = "17.0.0";
  in
  buildPythonPackage rec {
    name = "service_identity-${version}";
  