Dependencies issue on CI with pytest and codecov

[vfdev-5]

All CI jobs are failing due to dependencies issue:

Requirement already satisfied: numpy in /opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages (from -r requirements-dev.txt (line 2)) (1.24.2)
Collecting pytest
  Using cached pytest-7.3.0-py3-none-any.whl (320 kB)
ERROR: Could not find a version that satisfies the requirement codecov (from versions: none)
ERROR: No matching distribution found for codecov

• https://github.com/pytorch/ignite/actions/runs/4685041039/jobs/8303411754?pr=2907

Hypothesis: pytest has released a new version that is incompatible with pytest-cov plug-in.
This a wrong hypothesis. Another one: Issue is related to codecov/python-standard#31

TODO:

• figure out (and confirm above hypothesis) why there is this issue and report the conclusion here
• Send a PR with a fix

[AlexanderChaptykov]

Why to not use Poetry?

[vfdev-5]

I'm not very familiar with poetry. What would be benefits of using it vs requirements list for pip ?

[AlexanderChaptykov]

Poetry automatically find compatible version, and should solve this type of issue. I hope

[vfdev-5]

From what I remember from poetry is that they may be fixing deps versions, so yes then their resolver can find compatible versions. In our case in https://github.com/pytorch/ignite/blob/master/requirements-dev.txt we left everything unfixed to take the latest versions and such issues can happen from time to time when one version is temporarily is incompatible with another one.

[AlexanderChaptykov]

codecov - is it correct name of the package? pytest-codecov maybe this right name?

[vfdev-5]

Seems like they just removed recently codecov package from pypy: codecov/python-standard#31
We have to follow their migration guidelines...