docs: def _get_config_dirs():
      """Return a list of directories where config files may be located.
  
      The following directories are returned::
  
        $XDG_CONFIG_HOME/rapport/ ($XDG_CONFIG_HOME defaults to ~/.config)
        /etc/rapport/
      """
      config_dirs = [
          USER_CONFIG_DIR,
          os.path.join("/", "etc", "rapport"),
          os.path.abspath(os.path.join("rapport", "config"))
      ]
      return config_dirs