Jython compatibility

[frenzymadness]

Hello.

I've tried to use pytest with Jython but it fails. I have an empty docker container based on Fedora 27 and Jython 2.7.1 (latest stable) installed from Fedora repository and pytest installed from PyPI. The problem I have doesn't come from pytest but it is caused by some incompatibility in the attrs module.

The question is whether Jython can be still considered as a supported platform and the issue is only a bug in pytest dependencies.

I've filled issue for the attrs module as well: python-attrs/attrs#321

Thank you for all your work and have a nice day.

[pytestbot]

GitMate.io thinks the contributors most likely able to help are @RonnyPfannschmidt, and @nicoddemus.

[nicoddemus]

Hi @frenzymadness,

Jython currently is not part of our CI process so I don't consider it completely supported, but pytest does have some code to deal with Jython specifics.

Not sure what's the opinion of other maintainers: should we strive to make Jython a first-class platform to be supported by including it in CI or should we remove its support officially at some point in the future?

[fabioz]

As a note, the current version (3.7.0) is no longer installing with pip on Jython because of scandir (I think it's a new dependency as it was certainly working until last week -- pip install pytest==3.6 still works though).

Report on scandir: benhoyt/scandir#105

[nicoddemus]

@fabioz thanks for the info.

scandir is a dependency of pathlib2, which we now use on Python<3.4.

Thanks for the upstream report. 👍

[RonnyPfannschmidt]

as far as i understood scandir cannot be supported on jython unless jython adds support in some way

[RonnyPfannschmidt]

wondering how hard it would be o add automatic wheels for it with manylinux/appveyor

[RonnyPfannschmidt]

benhoyt/scandir#106 should fix it

[nicoddemus]

Now that benhoyt/scandir#106 has been merged we can close this. Thanks again @frenzymadness for the report.