Hooks not recognized when freezing with cx_Freeze

This might be a pytest core issue as well, but I'm not sure - all my other plugins work fine, and I can't imagine pytest-bdd is the only one with custom hooks.

When running the tests frozen with cx_Freeze, after working around #158, I get:

____________________________________________ test_going_backforward ____________________________________________

request = <FixtureRequest for <Function 'test_going_backforward'>>

>   ???

tests/integration/features/test_features.py:41: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

feature = <pytest_bdd.feature.Feature object at 0x7f40b4716da0>
scenario = <pytest_bdd.feature.Scenario object at 0x7f40b4716e80>
request = <FixtureRequest for <Function 'test_going_backforward'>>, encoding = 'utf-8'

    def _execute_scenario(feature, scenario, request, encoding):
        """Execute the scenario.

        :param feature: Feature.
        :param scenario: Scenario.
        :param request: request.
        :param encoding: Encoding.
        """
>       request.config.hook.pytest_bdd_before_scenario(
            request=request,
            feature=feature,
            scenario=scenario,
        )
E       AttributeError: 'HookRelay' object has no attribute 'pytest_bdd_before_scenario'

.tox/unittests-frozen/lib/python3.4/site-packages/pytest_bdd/scenario.py:148: AttributeError

After commenting out all the hook calls, it works fine... I also tried the branch from #149 but that didn't help.

Any idea why this is happening?

Start by reproducing the frozen test run with cx_Freeze and inspect tests/integration/features/test_features.py:41. Then trace _execute_scenario in pytest_bdd/scenario.py, especially the pytest_bdd_before_scenario hook call, and compare it with how hooks are registered in the frozen environment. Done means the frozen tests recognize the pytest-bdd hooks without commenting out hook calls.