poetry add prospector
Using version ^1.15.3 for prospector

Updating dependencies
Resolving dependencies... (0.2s)

Package operations: 10 installs, 0 updates, 0 removals

  - Installing pylint-flask (0.6): Failed

PEP517 build of a dependency failed

Backend subprocess exited when trying to invoke get_requires_for_build_wheel

    | Command '['/tmp/tmpdy2cjji8/.venv/bin/python', '/home/retep/repos/jsonschema2md/.venv/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py', 'get_requires_for_build_wheel', '/tmp/tmp5uwtcvqh']' returned non-zero exit status 1.
    |
    | Warning: 'classifiers' should be a list, got type 'tuple'
    | Traceback (most recent call last):
    |   File "/home/retep/repos/jsonschema2md/.venv/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    |     main()
    |   File "/home/retep/repos/jsonschema2md/.venv/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 "/home/retep/repos/jsonschema2md/.venv/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 "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 334, in get_requires_for_build_wheel
    |     return self._get_build_requires(config_settings, requirements=[])
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 304, in _get_build_requires
    |     self.run_setup()
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 522, in run_setup
    |     super().run_setup(setup_script=setup_script)
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/build_meta.py", line 320, in run_setup
    |     exec(code, locals())
    |   File "<string>", line 43, in <module>
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 160, in setup
    |     dist.parse_config_files()
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/_virtualenv.py", line 22, in parse_config_files
    |     result = old_parse_config_files(self, *args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/dist.py", line 730, in parse_config_files
    |     self._parse_config_files(filenames=inifiles)
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/dist.py", line 599, in _parse_config_files
    |     opt = self._enforce_underscore(opt, section)
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/tmp/tmpdy2cjji8/.venv/lib/python3.11/site-packages/setuptools/dist.py", line 629, in _enforce_underscore
    |     raise InvalidConfigError(
    | setuptools.errors.InvalidConfigError: Invalid dash-separated key 'description-file' in 'metadata' (setup.cfg), please use the underscore name 'description_file' instead.

Note: This error originates from the build backend, and is likely not a problem with poetry but one of the following issues with pylint-flask (0.6)

  - not supporting PEP 517 builds
  - not specifying PEP 517 build requirements correctly
  - the build requirements are incompatible with your operating system or Python version
  - the build requirements are missing system dependencies (eg: compilers, libraries, headers).

You can verify this by running pip wheel --no-cache-dir --use-pep517 "pylint-flask (==0.6)"

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.04.2 LTS
Release:        24.04
Codename:       noble
python3 --version
Python 3.11.11
poetry --version