docs: def stringify(pkgs):
      '''
      Takes a dict of package name/version information and joins each list of
      installed versions into a string.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' pkg_resource.stringify 'vim: 7.127'
      '''
      try:
          for key in pkgs:
              pkgs[key] = ','.join(pkgs[key])
      except AttributeError as exc:
          log.exception(exc)