anchor.diff:      owner = "23andMe";
       repo = pname;
       rev = version;
  -    sha256 = "0bn0himn5fwndaxn205s55bdc4np7lhd940i0lkv0m7ybhbw7dap";
  +    sha256 = "sha256-hFBU3o3HpL0Schgzcx3oYq0IAUVGKThIfEteYcFbLnk=";
     };
   
     propagatedBuildInputs = [
  
positive.code:     pytestCheckHook
    ];
  
    pythonImportsCheck = [ "yamale" ];
  
    meta = with lib; {
      description = "A schema and validator for YAML";
  
negative.code: 
  buildPythonPackage rec {
    pname = "yamale";
    version = "4.0.2";
    format = "setuptools";
  
    disabled = pythonOlder "3.6";
  
  