+ /usr/bin/python3 -sBm build -w --no-isolation
* Getting build dependencies for wheel...
/usr/lib/python3.9/site-packages/setuptools/config/_apply_pyprojecttoml.py:76: _MissingDynamic: `license` defined outside of `pyproject.toml` is ignored.
!!

        ********************************************************************************
        The following seems to be defined outside of `pyproject.toml`:

        `license = 'LGPLv3'`

        According to the spec (see the link below), however, setuptools CANNOT
        consider this value unless `license` is listed as `dynamic`.

        https://packaging.python.org/en/latest/specifications/pyproject-toml/#declaring-project-metadata-the-project-table

        To prevent this problem, you can list `license` under `dynamic` or alternatively
        remove the `[project]` table from your file and rely entirely on other means of
        configuration.
        ********************************************************************************

!!
  _handle_missing_dynamic(dist, project_table)
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
    main()
  File "/usr/lib/python3.9/site-packages/pyproject_hooks/_in_process/_in_process.py", line 335, in main
    json_out['return_val'] = hook(**hook_input['kwargs'])
  File "/usr/lib/python3.9/site-packages/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
    return hook(config_settings)
  File "/usr/lib/python3.9/site-packages/setuptools/build_meta.py", line 325, in get_requires_for_build_wheel
    return self._get_build_requires(config_settings, requirements=['wheel'])
  File "/usr/lib/python3.9/site-packages/setuptools/build_meta.py", line 295, in _get_build_requires
    self.run_setup()
  File "/usr/lib/python3.9/site-packages/setuptools/build_meta.py", line 487, in run_setup
    super().run_setup(setup_script=setup_script)
  File "/usr/lib/python3.9/site-packages/setuptools/build_meta.py", line 311, in run_setup
    exec(code, locals())
  File "<string>", line 8, in <module>
  File "/usr/lib/python3.9/site-packages/setuptools/__init__.py", line 103, in setup
    return distutils.core.setup(**attrs)
  File "/usr/lib/python3.9/site-packages/setuptools/_distutils/core.py", line 159, in setup
    dist.parse_config_files()
  File "/usr/lib/python3.9/site-packages/setuptools/dist.py", line 627, in parse_config_files
    pyprojecttoml.apply_configuration(self, filename, ignore_option_errors)
  File "/usr/lib/python3.9/site-packages/setuptools/config/pyprojecttoml.py", line 68, in apply_configuration
    return _apply(dist, config, filepath)
  File "/usr/lib/python3.9/site-packages/setuptools/config/_apply_pyprojecttoml.py", line 57, in apply
    _apply_project_table(dist, config, root_dir)
  File "/usr/lib/python3.9/site-packages/setuptools/config/_apply_pyprojecttoml.py", line 83, in _apply_project_table
    corresp(dist, value, root_dir)
  File "/usr/lib/python3.9/site-packages/setuptools/config/_apply_pyprojecttoml.py", line 184, in _license
    _set_config(dist, "license", val["text"])
KeyError: 'text'

ERROR Backend subprocess exited when trying to invoke get_requires_for_build_wheel