docs: def _render_config(cls, dest, template_name, template_args):
          """
          Renders and writes a template_name to a dest given some template_args.
  
          This is for platform-specific configurations
          """
          template_args = template_args.copy()
  
          # Substitute values here
          pyversion = template_args['pyversion']
          template_args['pyversion'] = cls.PYVERSIONS[pyversion]
  
          template = template_env.get_template(template_name)
          contents = template.render(**template_args)
          _write_file(dest, contents)