AmbiguousEnvVar when setting default runner.env with both lower and uppercase about invoke HOT 1 OPEN

def patch_invoke_env():
    def _to_env_var(self, key_path):
        if len(key_path) > 2 and key_path[0].lower() == 'run' and key_path[1].lower() == 'env':
            return '_'.join(('_'.join(key_path[:2]).upper(), '_'.join(key_path[2:])))
        return "_".join(key_path).upper()

    import invoke.env
    invoke.env.Environment._to_env_var = _to_env_var


patch_invoke_env()