pytest fails

[f-hafner]

pytest fails for me after installing via conda 23.1.0 on linux.

====================================== short test summary info ======================================
FAILED test/test_dask.py::flake-8::FLAKE8 - AttributeError: 'Application' object has no attribute 'parse_preliminary_options'
FAILED test/test_environment.py::flake-8::FLAKE8 - AttributeError: 'Application' object has no attribute 'parse_preliminary_options'
FAILED test/test_pi.py::flake-8::FLAKE8 - AttributeError: 'Application' object has no attribute 'parse_preliminary_options'
FAILED test/test_snakemake.py::flake-8::FLAKE8 - AttributeError: 'Application' object has no attribute 'parse_preliminary_options'
FAILED test/test_threading.py::flake-8::FLAKE8 - AttributeError: 'Application' object has no attribute 'parse_preliminary_options'

to reproduce:

conda env create -f environment.yml --prefix ./env
conda activate ./env
pytest