def config_changed(self, update_parent=True):
        super(Driver, self).config_changed(update_parent)
        self._required_compnames = None
        self._depgraph = None
        self._iter_set = None
        self._full_iter_set = None
        if self.workflow is not None:
            self.workflow.config_changed()
Setup a fresh virtualenv, install everything we need, and fire up the database.
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/driver.py/Driver.config_changed--crossover with--dataset/ETHPy150Open ireapps/census/censusweb/fabfile.py/setup