PackageInfo: Invalid constraint (PyYAML (>=5.1.*)) found in omegaconf-2.1.0 dependencies, skipping

[gygabyte017]

Describe the bug
When installing omegaconf with poetry command poetry add omegaconf, the follogin warning is issued:

PackageInfo: Invalid constraint (PyYAML (>=5.1.*)) found in omegaconf-2.1.0 dependencies, skipping

To Reproduce
Just install the package in an empty environment.

Expected behavior
To correctly get and install the pyyaml dependency.

Additional context

• OmegaConf version: 2.1.0
• Python version: 3.8
• Operating system: Windows
• Please provide a minimal repro

[omry]

Why is this an invalid constraint? pip likes it just fine.

[gygabyte017]

I'm not sure it is invalid, if with pip is ok I'll open an issue in poetry repo about it and let you know.

[omry]

I didn't hear or see any reports about it causing issues for anyone else.
This seems in line with https://www.python.org/dev/peps/pep-0440/

e.g: https://www.python.org/dev/peps/pep-0440/#version-matching

[gygabyte017]

They say >=5.1.* is not a valid PEP440. (Issue: python-poetry/poetry#4206 and linked issues)

In fact reading PEP440 I see that the * is accepted only with == or with != and not with >=; moreover ==5.1.* is equivalent to >=5.1.0 but >=5.1.* is invalid.

What do you think?

[omry]

Thanks. Sounds fine.
Go ahead and send a PR fixing it to >=5.1 or >=5.1.0.
(Alternatively, you can wait for us to get to it).

[gygabyte017]

Opened PR #761

[ZetiMente]

@omry Hi, I just started using OmegaConf and ran into this error. It appears to be fixed now. PR #761. Is there any chance of a new release soon? I'm very excited to be using OmegaConf because it's making my newest ML project awesome. However, this error prevents it from working in Google Colab.

[omry]

@Jasha10, do you want to try to release 2.1.1 with this fix?

[Jasha10]

Sure, I'll give it a try!