def get_installed_pypackages():
    return {p.project_name.lower(): p for p in pkg_resources.working_set}
def get_primary_domain(self):
        """
        Returns the primary domain of the tenant
        """
        try:
            domain = self.domains.get(is_primary=True)
            return domain
        except get_tenant_domain_model().DoesNotExist:
            return None