def gather_plugins(self):
        """Return all plugins that are found in the plugin paths

        Looks in the envvar ``JUKEBOX_PLUGIN_PATH``.

        :returns:
        :rtype:
        :raises:
        """
        plugins = []
        cfg = get_core_config()
        pathenv = cfg['jukebox']['pluginpaths']
        pathenv = os.pathsep.join((pathenv, os.environ.get("JUKEBOX_PLUGIN_PATH", "")))
        paths = pathenv.split(os.pathsep)
        # first find built-ins then the ones in the config, then the one from the environment
        # so user plugins can override built-ins
        for p in reversed(paths):
            if p and os.path.exists(p):  # in case of an empty string, we do not search!
                plugins.extend(self.find_plugins(p))
        return plugins
Return all plugins that are found in the plugin paths

        Looks in the envvar ``JUKEBOX_PLUGIN_PATH``.

        :returns:
        :rtype:
        :raises: