CI broken

[d-chambers]

Avoid duplicates

• I searched existing issues

Bug Summary

It appears the current CI installation is not sufficient to resolve all of the deps for testing. See here.

I can reproduce this issue locally by using the appropriate env file in the .github folder and installing obspy with

pip install . --no-deps

However, if I replace the no deps with an editable installation everything works fine

pip install  -e .

I think this was mentioned in #3176 but I didn't follow that thread completely. Any ideas why this is setup this way @trichter or @megies ?

Installation Method?

developer installation / from source / git checkout

[trichter]

I think this error is due to an issue in pytest-metadata, see pytest-dev/pytest-metadata#54. The new version of this package fixing the issue is available on pypi, but not yet in conda-forge. I expect the pip install without --no-deps downloads the latest version from pypi and overwrites the version installed by conda.

[d-chambers]

Ah, great thanks @trichter you are on the ball.

I opened an issue with the conda-forge feedstock to see if the maintainers would be willing to push out a new version. Hopefully when that happens the issue will be resolved.

[d-chambers]

The conda-forge maintainers of pytest-metadata released a new version and CI appears to work again. For reference, here is the relevant pytest PR which explains that parts of the py library are now vendor-ed and other parts not, hence why an attribute error is raised rather than an import error in older versions of pytest-metadata.