Drop older Python support / increase min required Python version

[albertz]

I just want to open this issue to discuss this, and also on what version we want to increase to.

On RETURNN, currently we require Python 3.7 Python 3.8. See rwth-i6/returnn#487, rwth-i6/returnn#1326 for some discussion and also what features are available since Python 3.8 (or closeby versions).

Python >=3.8 is required for i6_core: rwth-i6/i6_core#409, rwth-i6/i6_core#408

Python >=3.8 is also required for i6_models: rwth-i6/i6_models#11.

[albertz]

Ping? @curufinwe @michelwi @dthulke ?

[michelwi]

Bumping would be fine with me, as all our recipes already require Python >=3.8 as you said.

@dthulke, @patrick-wilken @RaphaelLilt you are using different recipe collections, would bumping the minimum required python version break your workflows?

[RaphaelLilt]

I'm currently using Python 3.11 so the bump would be fine with me.

[patrick-wilken]

Same here, we're on 3.10.

[albertz]

Ok, so I guess it is Python 3.8 then. Or even newer?

Where should this be put? CI run with this, so for the GitHub Actions configs. Maybe also README somewhere. What else?

[michelwi]

so I guess it is Python 3.8 then. Or even newer?
I would propose 3.8 for now and we can come back to this once we need newer features.

Where should this be put? CI run with this, so for the GitHub Actions configs.

#245 takes care of this 👍

Maybe also README somewhere.

yes, this is written explicitly in the readme

sisyphus/README.md

Line 10 in fabafb8

Sisyphus requires a Python >=3.6 installation with the following additional libraries:

What else?

Here is what I found with a quick search:

sisyphus/tox.ini

Line 2 in fabafb8

envlist = py35

sisyphus/pyproject.toml

Line 3 in fabafb8

target-version = ["py37"]

sisyphus/.pre-commit-config.yaml

Line 7 in fabafb8

python: python3.6

sisyphus/docs/installation.rst

Line 15 in fabafb8

Independent of the used scheduler engine, Sisyphus requires a Python 3.5 installation with the following additional libraries:

sisyphus/docs/aws_batch_docker/Dockerfile

Line 12 in fabafb8

RUN cp -a /opt/sisyphus/sisyphus /usr/local/lib/python3.6/dist-packages/

[albertz]

I think we also should wait for @curufinwe's feedback on this. He might know about some other setups.