How to set metadata version

[rblin081]

https://github.com/pypa/hatch/releases/tag/hatchling-v1.27.0 updated the default version of core metadata to version 2.4

Reading through the hatch documentation I'm not seeing a way to set the version to another value. Unfortunately core metadata version 2.4 is not working with twine and artifacts are unable to be published.
pypa/twine#1178

[ofek]

https://hatch.pypa.io/latest/plugins/builder/wheel/#options

What do you mean by not working, exactly?

[yaroslaff]

I am not a topicstarter, but probably I have same issue. My project is SQL grep and you can see full pyproject.toml in repo. In [project] section I have: license = { file = "LICENSE" }.

When I do: hatch build it makes packages with metadata file version 2.3:

Metadata-Version: 2.3
Name: sqlgrep
Version: 0.0.14
Summary: Find string anywhere in database
Project-URL: Homepage, https://github.com/yaroslaff/sqlgrep
Project-URL: Issues, https://github.com/yaroslaff/sqlgrep/issues
Author-email: Yaroslav Polyakov <[email protected]>
License: MIT License
....
License-File: LICENSE
...

(same Metadata-Version: 2.3 both for .whl and .tar.gz packages)

Publishing such files to pypi do not work:

(.venv) mir ~/repo/sqlgrep $ hatch publish
dist/sqlgrep-0.0.14.tar.gz ... failed
Error uploading to repository: https://upload.pypi.org/legacy/ - Client error '400 license-file introduced in metadata version 2.4, not 2.3. See https://packaging.python.org/specifications/core-metadata for more information.' for url 'https://upload.pypi.org/legacy/'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400

Seems pypi do not like combination of License-File and Metadata-Version: 2.3

My installed hatch* packages are:

$ pip freeze| grep hatch
hatch==1.14.0
hatchling==1.27.0

Hatchling 1.27.0 should support metadata 2.4, but it makes metadata 2.3

[ofek]

Try upgrading the required version of Hatchling in the build system table. It's probably using a cached version.

[yaroslaff]

Cannot tell for topicstarted, but thank you for your advice, it's working for me now! :-)