docs: def get_bin_version_str(bin_path, version_flag='-v', kw={}):
      """
      Get the version string through the binary.
      """
  
      try:
          prog = _get_exec_binary(bin_path, kw)
          version_str = version_expr.search(
              check_output([prog, version_flag], **kw).decode(locale)
          ).groups()[0]
      except OSError:
          logger.warning("failed to execute '%s'", bin_path)
          return None
      except Exception:
          logger.exception(
              "encountered unexpected error while trying to find version of "
              "'%s':", bin_path
          )
          return None
      logger.info("'%s' is version '%s'", bin_path, version_str)
      return version_str