setuptools <82 needed as depending on pkg_resources

[Barry1]

• For pytest pkg_resources is needed. From setuptools beginning with version 82 pkg_resources is not longer available.

[Barry1]

Unfortunately Changelog entry and pre-commit.ci fail - but I do not understand, why. That is strange.

[RonnyPfannschmidt]

the support for pkg_resources is dealing with legacy messes - if we have a code path outside of tests that actually needs it thats a bug

i did a preliminary check and the only code paths i found where sys.modules check guarded sections for handling legacy details in monkeypatch pythonpath handling and assertion rewrite handling

we should have a conditional skip for related tests and eventually phase it out alltogether

additionally build requires and requries don't match - please provide a a example of the errors you see

[Barry1]

the support for pkg_resources is dealing with legacy messes - if we have a code path outside of tests that actually needs it thats a bug

i did a preliminary check and the only code paths i found where sys.modules check guarded sections for handling legacy details in monkeypatch pythonpath handling and assertion rewrite handling

we should have a conditional skip for related tests and eventually phase it out alltogether

additionally build requires and requries don't match - please provide a a example of the errors you see

Hi @RonnyPfannschmidt ,
thx for the quick reply.
I use pytest with some plugins
plugins: typeguard-4.5.1, cov-7.0.0, pyright-0.0.6, black-0.6.0, anyio-4.12.1, colordots-1.1, mypy-1.0.1, sugar-1.1.1, monkeytype-1.1.0, bandit-0.6.1, pylama-8.4.1, beartype-0.2.0

When using setuptools 81.0.0 it runs smooth, when switching to setuptools 82.0.1 I got the following error

File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/bin/pytest", line 8, in <module>
    sys.exit(console_main())
             ^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/config/__init__.py", line 223, in console_main
    code = main()
           ^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/config/__init__.py", line 193, in main
    config = _prepareconfig(new_args, plugins)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/config/__init__.py", line 361, in _prepareconfig
    config: Config = pluginmanager.hook.pytest_cmdline_parse(
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_hooks.py", line 512, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_callers.py", line 167, in _multicall
    raise exception
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_callers.py", line 139, in _multicall
    teardown.throw(exception)
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/helpconfig.py", line 124, in pytest_cmdline_parse
    config = yield
             ^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_callers.py", line 121, in _multicall
    res = hook_impl.function(*args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/config/__init__.py", line 1186, in pytest_cmdline_parse
    self.parse(args)
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/config/__init__.py", line 1539, in parse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pluggy/_manager.py", line 416, in load_setuptools_entrypoints
    plugin = ep.load()
             ^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/python/3.12.10-5b8d2cca60be0ecc84e000adc8b4947e/lib/python3.12/importlib/metadata/__init__.py", line 205, in load
    module = import_module(match.group('module'))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ebeling/.cache/trunk/tools/python/3.12.10-5b8d2cca60be0ecc84e000adc8b4947e/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/assertion/rewrite.py", line 197, in exec_module
    exec(co, module.__dict__)
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pylama/pytest.py", line 9, in <module>
    from pylama.config import CURDIR
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/assertion/rewrite.py", line 197, in exec_module
    exec(co, module.__dict__)
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pylama/config.py", line 13, in <module>
    from pylama.lint import LINTERS
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/_pytest/assertion/rewrite.py", line 197, in exec_module
    exec(co, module.__dict__)
  File "/home/ebeling/.cache/trunk/tools/poetry/2.3.2-3ff4de47fb042985c5aed30280248ddd/lib/python3.12/site-packages/pylama/lint/__init__.py", line 10, in <module>
    from pkg_resources import iter_entry_points
ModuleNotFoundError: No module named 'pkg_resources'

It also happened with python3.13 (in my poetry env).
I just recognized, that by removing pylama it runs fine. So it might be a problem between pytest and pylama?

Thanks again

Bastian

[RonnyPfannschmidt]

as per traceback the offending code is solely in the other library - pytest is not involved, only the messenger

[RonnyPfannschmidt]

further context - that package ships a pytest plugin which does the ill advised job of integrating linters in a testruner/framework