def chroot(self, new_workdir):
        """
        Change the workir of the :class:`Flow`. Mainly used for
        allowing the user to open the GUI on the local host
        and access the flow from remote via sshfs.

        .. note::
            Calling this method will make the flow go in read-only mode.
        """
        self._chrooted_from = self.workdir
        self.set_workdir(new_workdir, chroot=True)

        for i, work in enumerate(self):
            new_wdir = os.path.join(self.workdir, "w" + str(i))
            work.chroot(new_wdir)