Consider adding Click license text and SPDX identifier to .dist-info metadata

[musicinmybrain]

First Check

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Example Code

print("This is not a software bug.")

Description

Since Typer vendored Click in 0.26.0, the contents of typer/_click are licensed BSD-3-Clause, in contrast to the “main” license of MIT. The applicable license text is included as typer/_click/LICENSE.txt, which is both good and necessary. However, I think that the project.license field in pyproject.toml should be updated from "MIT" to "MIT AND BSD-3-Clause" to reflect the complete set of licenses that apply to the project. Ideally, "typer/_click/LICENSE.txt" could also be added to project.license-files so that both applicable license texts are distributed in the dist-info metadata.

Operating System

Linux

Operating System Details

I maintain the python-typer package in Fedora, but this discussion applies across all operating systems.

Project Version

0.26.5

Python Version

Python 3.14.5

Additional Context

I would be happy to provide a PR implementing these suggestions.

[svlandeg]

Thanks for bringing this up!

As you mentioned we are in fact distributing the original license with Click's code files, which is the main requirement of the BSD-3 license.
We want to be careful not to make any further changes that end up being irreversible, and that could affect or confuse users more downstream.

The current state of things is sort of an intermediate working version. In the future, the intention is to replace the Click's vendored implementation with functionality implemented from scratch to support additional features in Typer's code base directly (see also my reply on #1816). So the current state is not the final state we expect, only a transition to make sure people's Typer apps continue working with the least friction possible.