code: async def install_update(filename, loop):
      
      log.info("Installing update server into system environment")
      log.debug('File {} exists? {}'.format(filename, os.path.exists(filename)))
      out, err, returncode = await _install(sys.executable, filename, loop)
      if returncode == 0:
          msg = out
      else:
          msg = err
      res = {'message': msg, 'filename': filename}
      return res, returncode
docs: Install the update into the system environment.