Regression - Newer version fails to run tests on Github Actions

[lucasavila00]

The problem started when this line was added: https://github.com/fastai/nbdev/commit/0ce70e6a9998603e0b35d7035e433341e755e741#r41343538

Here I just cloned the template and it shows the error: https://github.com/lucasavila00/nbdev_bug/runs/967587111?check_suite_focus=true

  File ".../nbdev/cli.py", line 159, in _test_one
    if 0<idx<n and n>1: time.sleep(idx/2)
TypeError: '<' not supported between instances of 'int' and 'NoneType'

This can be fixed by pinning the nbdev version on the ci file, as in this commit: https://github.com/lucasavila00/nbdev_bug/commit/d9ff527c2e861efacfc167adee3387d0745ee25b

    - name: Install the library
      run: |
        pip install jupyter
        pip install -Iv nbdev==0.2.23
        pip install -e .

[github-actions[bot]]

👋 @lucasavila00! Thank you for opening your first issue in this repo. We are so happy that you have decided to contribute and value your contribution. Please read these materials before proceeding: Contributing Guide and Code of Conduct.

[igorbrigadir]

I've also run into this error - it seems to work fine if i use nbdev<=0.2.26 but 0.2.27 and 0.2.28 fail when running nbdev_test_nbs with TypeError: '<' not supported between instances of 'int' and 'NoneType' as above

[johnkabler]

I also ran into this issue, and solved it the same way @lucasavila00 did.

[jph00]

Should be fixed now