pytest-tornasync appears to be a *run-time* dependency?

[dhirschfeld]

Adding voila as a dependency to a conda meta-package I'm building breaks our CI with the below error:

C:\agent\_work\1\s>exit /B 0 

Traceback (most recent call last):

  File "C:\Miniconda\envs\test-1512\lib\site-packages\_pytest\config\__init__.py", line 689, in import_plugin

    __import__(importspec)

ModuleNotFoundError: No module named 'pytest_tornasync'

Specifying pytest_tornasync as a direct dependency then fixes the CI.

[maartenbreddels]

I'm wondering if this is jupyter_server:
https://github.com/jupyter/jupyter_server/blob/23b0a84ffb6599db97b37f66f80dba5c43f3a0c9/setup.py#L63

How can we reproduce this?

[adriendelsalle]

Hi!
I just faced the same issue.

Please find hereafter the reproducing steps @maartenbreddels

Installing jupyter_server instead of Voilà gives the same outputs due to the entrypoint you mentioned.
This issue should be transfered to the jupyter-server project.

I'm not sure that an entrypoint can be conditionally generated for an extras_require entry.

I hope this help!

---

1. Use pytest

Using a simple_test.py file only containing a trivial assertion:

cat simple_test.py
def test_assert_true():
    assert True

conda create -n bug_pytest -c conda-forge pytest
conda activate bug_pytest 
pytest simple_test.py  # <-- runs fine

2. Then install Voilà (or jupyter-server)

conda install -c conda-forge voila  # or jupyter_server
pytest simple_test.py  # <-- now throws an error
...
ImportError: Error importing plugin "pytest_tornasync": No module named 'pytest_tornasync'

3. Finally install pytest_tornasync

pip install pytest_tornasync  # Not packaged with conda
pytest simple_test.py  # <-- ImportError fixed

[vidartf]

I think this should be fixed in jupyter_server now ?