Make 0.x compatible with Python 3.13

[simonw]

Python 3.13 came out today: https://docs.python.org/3.13/whatsnew/3.13.html

Datasette does not run under Python 3.13 due to this issue with Pint:

• Python 3.13 error: cannot inherit frozen dataclass from a non-frozen one hgrecco/pint#1969

Options:

• Ship a Datasette 0.x version that marks itself as not working with Python 3.13
• Fork Pint, fix the bug, ship a pint-for-python313 packago to PyPI and ship a Datasette 0.x version that depends on that
• Backport the removal of Pint from 1.0 to 0.x and ship a Datasette 0.x version that no longer has the units feature
• Vendor a fixed version of Pint into the 0.x branch

I like that last option best.

[simonw]

Looks like Python 3.13 release isn't in there yet - see https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json which lists 3.13.0-rc.3.

[simonw]

Got this failure on 3.8:

ERROR: Ignored the following versions that require a different python version: 0.3 Requires-Python >=3.9
ERROR: Could not find a version that satisfies the requirement flexcache>=0.3 (from datasette) (from versions: 0.1, 0.2)
ERROR: No matching distribution found for flexcache>=0.3

I'm going to drop 3.8 from the support matrix and see if I can get the tests to pass.

[simonw]

Don't spell check in vendored.

[simonw]

Also got this error in the Pyodide tests:

I think there are files in vendored that are not being included in the wheel.

[simonw]

Looks like Pint itself dropped support for 3.8 here: hgrecco/pint@1208b3d

Which I think was released in 0.22 in May 2023 https://github.com/hgrecco/pint/releases/tag/0.22

[simonw]

I'm OK with shipping a version that drops support for 3.8 while adding support for 3.13.

[simonw]

New problem - Sphinx 5.3 is incompatible with Python 3.13 as it uses the imghdr module.

Sphinx has been bumped to https://pypi.org/project/Sphinx/ 8.0.2 now!

pipdeptree --reverse --packages Sphinx
Sphinx==5.3.0
├── furo==2022.9.29 [requires: Sphinx>=4.0,<6.0]
├── sphinx-autobuild==2024.10.3 [requires: Sphinx]
├── sphinx-basic-ng==1.0.0b2 [requires: Sphinx>=4.0]
│   └── furo==2022.9.29 [requires: sphinx-basic-ng]
└── sphinx-copybutton==0.5.2 [requires: Sphinx>=1.8]

So Furo is keeping us at Sphinx <6. I should upgrade to https://pypi.org/project/furo/2024.8.6/