Add poetry support

[LenkaSeg]

It would be nice to have poetry support.

[centos-ci]

Can one of the admins verify this patch?

[centos-ci]

Can one of the admins verify this patch?

[centos-ci]

Can one of the admins verify this patch?

[frenzymadness]

Hello. Thanks for the PR! Have you tried micropipenv? We already support it and it can install dependencies from various sources including poetry.lock files.

A few notes:

• Poetry will soon stop supporting Python 2 so we should implement it for Python 3 only.
• It has to be implemented also in src/s2i/bin/assemble where the installation of the tools actually happens.
• It would be nice to have two commits here: One with changes made to the src and examples folders and a second one with generated content from distgen.

I can take the PR and improve it but first of all, I'd like to know whether micropipenv works for you or not and how/why.

[abompard]

Hey! I didn't know about micropipenv, it seems to be a good candidate to replace our Poetry-based hack in assemble. However, we have Twisted as one of our indirect dependencies and we're hit by thoth-station/micropipenv#186, since Twisted marks some dependencies as Windows-only and micropipenv tries to install them.

[frenzymadness]

There is a new release of micropipenv with improved support for poetry. Could you please test it?

[abompard]

Yes, that specific issue is fixed, thanks! Unfortunately we now hit another one: thoth-station/micropipenv#192 :-/

[frenzymadness]

We have managed to fix all the known bugs related to poetry support in micropipenv. Do you think that it's enough to support micropipenv here and not poetry directly?

[abompard]

Yeah I think it's sufficient, one of my poetry-based projects can now use micropipenv, so thanks!

[LenkaSeg]

Ok! Closing pull request.