typing-extensions 4.13.0 has not LICENCE anymore

[Ricardaux]

Hi, since the 4.13.0 was released, the license is no longer indicated in the pypi package.
You can see it with the following command:
docker run -it python:3.10.16-alpine3.21 /bin/sh
pip install typing-extensions
pip show typing-extensions

We can see the result :
/ # pip show typing-extensions Name: typing_extensions Version: 4.13.0 Summary: Backported and Experimental Type Hints for Python 3.8+ Home-page: Author: Author-email: "Guido van Rossum, Jukka Lehtosalo, Łukasz Langa, Michael Lee" <levkivskyi@gmail.com> License: Location: /usr/local/lib/python3.10/site-packages Requires: Required-by:
Le license field is empty.
Do you know why the license is no longer indicated ?

Thanks for your time.

[srittau]

I suspect that the pip version in python:3.10.16-alpine3.21 doesn't support PEP 639 yet. With pip 25.0.1 the output seems correct:

Name: typing_extensions
Version: 4.13.0
Summary: Backported and Experimental Type Hints for Python 3.8+
Home-page: 
Author: 
Author-email: "Guido van Rossum, Jukka Lehtosalo, Łukasz Langa, Michael Lee" <levkivskyi@gmail.com>
License-Expression: PSF-2.0
Location: /home/srittau/zfutura/gold/.venv/lib/python3.12/site-packages
Requires: 
Required-by: 

[srittau]

Just confirmed this. The pip version in that image is pip 23.0.1. When running pip install -U pip before running the pip show command pip install typing-extensions, everything works fine.

Related: #559

[Daraan]

For me only a reinstall of pip fixed it to display the field, while previously I also had 25.0.1.

[srittau]

I just tested it. I should have written "... before running pip install typing-extensions". Running the install using a newer pip seems important.

[Ricardaux]

Oh, thank you very much !