pytest_ckan interferes with standard pytest procedures

[ChristianF88]

Sorry for writing this issue here, but pytest-ckan doesn't take issues.

CKAN version: 2.97

Describe the bug

I am writing an extension. For some base functionalities I can write ckan-independant tests. I skip a few tests, as they're not as "robust". In order to be able to choose running them anyways I implemented a cli hook. When I only had pytest installed everything worked fine. Now I ran the installation of pytest-ckan. Since I did that:

1. my implemented command for the cli dont work
2. I need to provide a ckan test.ini, otherwise pytest doesnt run at all

How can I run tests, that are marked to be skipped?

Steps to reproduce
an example test:

import pytest
@pytest.mark.skip(reason="Hardcoded Eawag user name!")
def test_generate_staff_profile_url(request_code):
    assert 200== 200

confest.py

import pytest
import _pytest.skipping

def pytest_addoption(parser):
    parser.addoption(
        "--no-skips",
        action="store_true",
        default=False, help="disable skip marks")


@pytest.hookimpl(tryfirst=True)
def pytest_cmdline_preparse(config, args):
    if "--no-skips" not in args:
        return

    def no_skip(*args, **kwargs):
        return

    _pytest.skipping.skip = no_skip

Expected behavior
What I expect is that I am not forced to pass a ckan.ini if my tests don't require it and that if I do my added cli commands work.

Additional details

pytest --version
This is pytest version 4.6.5, imported from /usr/lib/ckan/default/lib/python3.9/site-packages/pytest.py
setuptools registered plugins:
  pyfakefs-3.2 at /usr/lib/ckan/default/lib/python3.9/site-packages/pyfakefs/pytest_plugin.py
  Faker-15.3.3 at /usr/lib/ckan/default/lib/python3.9/site-packages/faker/contrib/pytest/plugin.py
  pytest-split-tests-1.0.9 at /usr/lib/ckan/default/lib/python3.9/site-packages/pytest_split_tests/__init__.py
  pytest-cov-2.7.1 at /usr/lib/ckan/default/lib/python3.9/site-packages/pytest_cov/plugin.py
  pytest-freezegun-0.4.1 at /usr/lib/ckan/default/lib/python3.9/site-packages/pytest_freezegun.py
  pytest-ckan-0.0.12 at /usr/lib/ckan/default/lib/python3.9/site-packages/pytest_ckan/__init__.py
  pytest-rerunfailures-8.0 at /usr/lib/ckan/default/lib/python3.9/site-packages/pytest_rerunfailures.py