anchor.diff:  
     pythonImportsCheck = [ "hy" ];
   
  +  passthru.tests.version =  testers.testVersion {
  +    package = hy;
  +    command = "hy -v";
  +  };
  +
     meta = with lib; {
       description = "Python to/from Lisp layer";
       homepage = "https://github.com/hylang/hy";
  
positive.code: , colorama
  , fetchFromGitHub
  , funcparserlib
  , pytestCheckHook
  , python
  , pythonOlder
  , rply
  , hyDefinedPythonPackages ? python-packages: [] /* Packages like with python.withPackages */
  }:
  
  
negative.code:     rev = version;
      sha256 = "sha256-MBzp3jqBg/kH233wcgYYHc+Yg9GuOaBsXIfjFDihD1E=";
    };
  
    # https://github.com/hylang/hy/blob/1.0a4/get_version.py#L9-L10
    HY_VERSION = version;
  
    propagatedBuildInputs = [
      colorama
  