subprocess-exited-with-error with requirements.txt install

### Expected Behavior

When following the instructions for installing given on the main github page, with pip install -r requirements.txt, the requirement install fails with Building wheel for sentencepiece (pyproject.toml) ... error
The instructions should be more verbose and the requirements should install

### Actual Behavior

Installation fails when installing python packages

### Steps to Reproduce

following the instructions listed on main page and then the error occurs

### Debug Logs

```powershell
Building wheels for collected packages: sentencepiece
Building wheel for sentencepiece (pyproject.toml) ... error
error: subprocess-exited-with-error

× Building wheel for sentencepiece (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [120 lines of output]
/tmp/pip-build-env-s_54q1m3/overlay/lib/python3.13/site-packages/setuptools/_distutils/dist.py:289: UserWarning: Unknown distribution option: 'test_suite'
warnings.warn(msg)
/tmp/pip-build-env-s_54q1m3/overlay/lib/python3.13/site-packages/setuptools/dist.py:751: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

********************************************************************************
Please consider removing the following classifiers in favor of a SPDX license expression:

License :: OSI Approved :: Apache Software License

See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
********************************************************************************

!!
self._finalize_license_expression()
```

### Other

_No response_