Add support for Python 3.11

[pmeier]

Redo of #6959, because it was pushed to the main branch of the fork and I don't have permissions to push to it

[pmeier]

There are multiple CI failures, but as long as missing dependencies are not fixed, we can't move forward. Both numpy and scipy are currently missing 3.11 support as well. Both latest version in the channel, i.e. numpy==1.23.5 and scipy==1.9.3, have 3.11 wheels on PyPI. So I guess Anaconda needs to just build them with the newly available Python 3.11.

[johnnynunez]

There are multiple CI failures, but as long as missing dependencies are not fixed, we can't move forward. Both numpy and scipy are currently missing 3.11 support as well. Both latest version in the channel, i.e. numpy==1.23.5 and scipy==1.9.3, have 3.11 wheels on PyPI. So I guess Anaconda needs to just build them with the newly available Python 3.11.

yes, 1.24 numpy is necessary. I hope that they updated soon.

[pmeier]

yes, 1.24 numpy is necessary

Why? I think they can just build 1.23.5 with Python 3.11

[johnnynunez]

yes, 1.24 numpy is necessary

Why? I think they can just build 1.23.5 with Python 3.11

yes, but it is the initial support.
But 1.24 is the released supported https://numpy.org/devdocs/release/1.24.0-notes.html

[johnnynunez]

@pmeier What packages does torchvision need? I see that Anaconda doesn't have any for python3.11. From what I've been told the release with python3.11 comes out in March, but I'm trying to press to unlock this merge much earlier

[pmeier]

vision/packaging/torchvision/meta.yaml

Lines 17 to 19 in d2d448c

	host:
	- python
	- setuptools

vision/packaging/torchvision/meta.yaml

Lines 24 to 34 in d2d448c

	run:
	- python
	- defaults::numpy >=1.11
	- requests
	- libpng
	- ffmpeg >=4.2 # [not win]
	- jpeg
	- pillow >=5.3.0, !=8.3.*
	- pytorch-mutex 1.0 {{ build_variant }} # [not osx ]
	{{ environ.get('CONDA_PYTORCH_CONSTRAINT') }}
	{{ environ.get('CONDA_CUDATOOLKIT_CONSTRAINT', '') }}

vision/packaging/torchvision/meta.yaml

Lines 61 to 65 in d2d448c

	requires:
	- pytest
	- scipy
	- jpeg
	- ca-certificates

So the Python dependencies are

• setuptools¹
• numpy
• requests¹
• Pillow
• pytest¹
• scipy

but I'm trying to press to unlock this merge much earlier

Don't do that on our behalf. I agree that we need 3.11, but there is no need to push anyone for that.

Footnotes

1. Pure Python and thus just need to be repackaged. ↩ ↩² ↩³

[johnnynunez]

@pmeier yeah of course, but it’s the next milestone/release about March aprox conda/conda#11170

[pmeier]

If you have a strong need for 3.11, why not build it yourself from source?

about March aprox

We will have the branch cut for the next release in under one month (no concrete dates yet) so likely the next release will also be without 3.11. Of course nightlies will be available as soon as this PR is merged.

[osalpekar]

cc @malfet @atalman

[johnnynunez]

ContinuumIO/anaconda-issues#13125

[johnnynunez]

@pmeier @atalman @osalpekar ContinuumIO/anaconda-issues#13082 (comment)
Conda binaries 3.11 uploading

[pmeier]

torchvision==0.15.1 is available for Python 3.11 from PyPI. Unfortunately, the conda version didn't make it, because the defaults channel only very recently published 3.11 versions of our dependencies. I'll open a separate issue for that. We'll provide 3.11 builds on our nightly channel soon.