Warnings from setuptools.setup()

[Jun Omae]

$ /venv/py310/bin/python setup.py --help
/src/trac/__init__.py:14: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
  from pkg_resources import DistributionNotFound, get_distribution
/venv/py310/lib/python3.10/site-packages/setuptools/dist.py:765: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

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

        License :: OSI Approved :: BSD License

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

!!
  self._finalize_license_expression()
/venv/py310/lib/python3.10/site-packages/setuptools/__init__.py:92: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.

        This deprecation is overdue, please update your project and remove deprecated
        calls to avoid build errors in the future.
        ********************************************************************************

!!
  dist.fetch_build_eggs(dist.setup_requires)
Common commands: (see '--help-commands' for more)
...

Fixing the issues is to remove license in the classifiers and setup_requires in setup.cfg.

setup.cfg

@@ -15 +15 @@
     Environment :: Web Environment
     Framework :: Trac
     Intended Audience :: Developers
-    License :: OSI Approved :: BSD License
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3
@@ -36 +35 @@
 zip_safe = True
 python_requires = >= 3.5
 packages = find:
-setup_requires =
-    jinja2>=2.9.3
 install_requires =
     setuptools>=30.3,<81
     jinja2>=2.9.3