anchor.diff:  
   buildPythonPackage rec {
     pname = "yamale";
  -  version = "3.0.4";
  +  version = "3.0.8";
   
     disabled = !isPy3k;
   
  
positive.code:   checkInputs = [
      pytest
    ];
  
    meta = with lib; {
      description = "A schema and validator for YAML";
  
negative.code:     owner = "23andMe";
      repo = pname;
      rev = version;
      sha256 = "0bn0himn5fwndaxn205s55bdc4np7lhd940i0lkv0m7ybhbw7dap";
    };
  
    propagatedBuildInputs = [
  