Set Python version to 3.7 in Netlify

[revolter]

No description provided.

[revolter]

Still doesn't work 😡

[janbrasna]

@revolter I understand that’s attempting to fix the netlify builds missing weakref? It seems getting rid of the backports might help, however I have clearly no idea where the env (docker config maybe?) lives, as there’s no reference to weakref in this repo.

Context: pypa/pipenv#4834

[revolter]

@janbrasna, I think that it's a Netlify issue, and they're the one that should fix it. It broke when they updated the docker image that they're using.

[janbrasna]

@revolter Gotcha. That's why I couldn't find any of that in the tooling/pipeline;D Good thing is it "fixed itself" (pypa/pipenv#4829) at some point later in December, so one can rely on previews again. 🚀

[janbrasna]

@revolter So I guess it's time to try this again, as the currently used 3.5 in the image does pretty much nothing aside from throwing a jillion of EOL warnings;D — according to https://github.com/netlify/build-image/blob/xenial/included_software.md#languages this value should work. (Can't understand why they default to EOLed version as a the right choice for python3 instead of the highest they support, beyond me:/…)

Otherwise I think it means either specifying exact minor 3.7 in Pipfile (which makes things unnecessarily specific for local work?) or providing runtime.txt with 3.7 (pretty much tidying up these 044d27f + 4240507)?

[janbrasna]

Yea I can only confirm that the .toml file had no impact during my experimenting in #1164 … no idea why:/