anchor.diff:    inherit (lib)
       optionals;
   
  -  version = "17.0.0";
  +  version = "18.1.0";
   in
   buildPythonPackage rec {
     name = "service_identity-${version}";
  
positive.code:   src = fetchPyPi {
      package = "service_identity";
      inherit version;
      sha256 = "4001fbb3da19e0df22c47a06d29681a398473af4aa9d745eca525b3b2c2302ab";
    };
  
    propagatedBuildInputs = [
      attrs
      pyasn1
      pyasn1-modules
      pyopenssl
    ];
  
    buildInputs = optionals doCheck [
      pytest
    ];
  
    doCheck = true;
  
    meta = with lib; {
      description = "Service identity verification for pyOpenSSL";
  
negative.code: , lib
  
  , attrs
  , ipaddress
  , pyasn1
  , pyasn1-modules
  , pyopenssl
  