anchor.diff: -{ lib, buildPythonPackage, fetchFromGitHub, pyyaml, jsonschema, six, pytest, mock }:
  +{ lib, buildPythonPackage, fetchFromGitHub, pyyaml, jsonschema, six, pytestCheckHook, mock }:
   
   buildPythonPackage rec {
     pname = "swagger-spec-validator";
  
positive.code:     maintainers = with maintainers; [ vanschelven ];
    };
  }
  
  
  
negative.code:   src = fetchFromGitHub {
      owner = "Yelp";
      repo = "swagger_spec_validator";
      rev = "v${version}";
      sha256 = "sha256-7+kFmtzeze0QlGf6z/M4J4F7z771a5NWewB1S3+bxn4=";
    };
  
    propagatedBuildInputs = [
      pyyaml
      jsonschema
      six
    ];
  
    checkInputs = [
      pytestCheckHook
      mock
    ];
  
    pythonImportsCheck = [ "swagger_spec_validator" ];
  
    meta = with lib; {
      homepage = "https://github.com/Yelp/swagger_spec_validator";
  