Various package build issues

[yurivict]

Describe the bug
Out of the box there is this breakage:

versioningit could not find a version for the project in /usr/ports/science/py-openff-toolkit/work-py311/openff-toolkit-0.16.7!

You may be installing from a shallow clone, in which case you need to unshallow it first.

Alternatively, you may be installing from a Git archive, which is not supported by default.  Install from a git+https://... URL instead.

On FreeBSD we use tarballs downloaded from GitHub which aren't git repositories.

Once version checking is patched away, the next error shows up:

* Getting build dependencies for wheel...
[01/24/25 18:32:13] WARNING  pyproject.toml does not contain a tool.setuptools_scm section                                                                                                                                                                    setuptools.py:119
/usr/local/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py:104: _BetaConfiguration: Support for `[tool.setuptools]` in `pyproject.toml` is still *beta*.
  warnings.warn(msg, _BetaConfiguration)
configuration error: `project.classifiers[2]` must be trove-classifier
DESCRIPTION:
    `PyPI classifier <https://pypi.org/classifiers/>`_.

GIVEN VALUE:
    "License :: OSI Approved :: MIT"

OFFENDING RULE: 'format'

DEFINITION:
    {
        "type": "string",
        "format": "trove-classifier"
    }
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    main()
  File "/usr/local/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
    json_out["return_val"] = hook(**hook_input["kwargs"])
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
    return hook(config_settings)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/setuptools/build_meta.py", line 177, in get_requires_for_build_wheel
    return self._get_build_requires(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/setuptools/build_meta.py", line 159, in _get_build_requires
    self.run_setup()
  File "/usr/local/lib/python3.11/site-packages/setuptools/build_meta.py", line 174, in run_setup
    exec(compile(code, __file__, 'exec'), locals())
  File "setup.py", line 1, in <module>
  File "/usr/local/lib/python3.11/site-packages/setuptools/__init__.py", line 87, in setup
    return distutils.core.setup(**attrs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 151, in setup
    dist.parse_config_files()
  File "/usr/local/lib/python3.11/site-packages/setuptools/dist.py", line 868, in parse_config_files
    pyprojecttoml.apply_configuration(self, filename, ignore_option_errors)
  File "/usr/local/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 58, in apply_configuration
    config = read_configuration(filepath, True, ignore_option_errors, dist)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 122, in read_configuration
    validate(subset, filepath)
  File "/usr/local/lib/python3.11/site-packages/setuptools/config/pyprojecttoml.py", line 47, in validate
    raise error from None
ValueError: invalid pyproject.toml config: `project.classifiers[2]`

ERROR Backend subprocess exited when trying to invoke get_requires_for_build_wheel
*** Error code 1

To Reproduce
build using Python's 'build' module.

Computing environment (please complete the following information):

• Operating system: FreeBSD 14.2
• Output of running conda list: n/a: conda isn't used.

Additional context
I am unable to create the FreeBSD port due to the above issues.