why ？

C:\Users\admin\AppData\Local\Temp\pip-build-env-hx7mabbe\overlay\Lib\site-packages\setuptools\command\build_py.py:207: _Warning: Package 'insightface.thirdparty.face3d.mesh.cython' is absent from the `packages` configuration.
!!

********************************************************************************
############################
# Package would be ignored #
############################
Python recognizes 'insightface.thirdparty.face3d.mesh.cython' as an importable package[^1], but it is absent from setuptools' `packages` configuration.

This leads to an ambiguous overall configuration. If you want to distribute this
package, please make sure that 'insightface.thirdparty.face3d.mesh.cython' is explicitly added
to the `packages` configuration field.

Alternatively, you can also rely on setuptools' discovery methods
(for example by using `find_namespace_packages(...)`/`find_namespace:`
instead of `find_packages(...)`/`find:`).

You can read more about "package discovery" on setuptools documentation page:

- https://setuptools.pypa.io/en/latest/userguide/package_discovery.html

If you don't want 'insightface.thirdparty.face3d.mesh.cython' to be distributed and are
already explicitly excluding 'insightface.thirdparty.face3d.mesh.cython' via
`find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
you can try to use `exclude_package_data`, or `include-package-data=False` in
combination with a more fine grained `package-data` configuration.

You can read more about "package data files" on setuptools documentation page:

- https://setuptools.pypa.io/en/latest/userguide/datafiles.html