[clang] [llvm] [libclang/python] Enable packaging libclang bindings (PR #125806)

[Cristian Le via cfe-commits]

LecrisUT wrote:

> - The python bindings aren't placed in the right folder to import them when the package is pip installed 

They are *not*? I tried it and it imported fine, same as you noticed.

> - Installing directly from a git URL or source archives for a release won't work 

Similarly, aren't the subpoints proving that it does work?

> - The version number detected when building a wheel for tagged releases isn't correct

Yes there are multiple version schemas that are controlled by `tool.setuprools_scm.version_scheme = "no-guess-dev"`. See [here](https://setuptools-scm.readthedocs.io/en/latest/extending/#available-implementations) for what's available. The `.post1` or such are intentional in order to evaluate higher than the last release. Personally I go with `guess-next-dev`, since it does a sensible job.

Also, I thought you've already added the fallback-version. We should be fine to add it back just in case.

https://github.com/llvm/llvm-project/pull/125806