DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('pydevd_plugins.extensions')`

[int19h]

Causes test_run_relative_path fails, and the failure is consistent across all platforms, e.g. https://dev.azure.com/debugpy/debugpy/_build/results?buildId=3594&view=logs&j=4b649afe-af30-5b13-56ee-823ad097620f&t=1628023b-a9e3-551b-728a-f87538244b57&l=2498

Seems to be due to:

File "D:\a\1\s\.tox\py39\lib\site-packages\debugpy\_vendored\pydevd\_pydevd_bundle\pydevd_extension_utils.py", line 5, in <module>
E               import pydevd_plugins.extensions as extensions
E             File "D:\a\1\s\.tox\py39\lib\site-packages\debugpy\_vendored\pydevd\pydevd_plugins\extensions\__init__.py", line 4, in <module>
E               __import__('pkg_resources').declare_namespace(__name__)
E             File "D:\a\1\s\.tox\py39\lib\site-packages\pkg_resources\__init__.py", line 2298, in declare_namespace
E               warnings.warn(msg, DeprecationWarning, stacklevel=2)
E           DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('pydevd_plugins.extensions')`.
E           Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages

[int19h]

Caused by an update to setuptools v67.3.0

[int19h]

The test itself can be fixed by looking for a more specific string, but the issue here is bigger - anything that depends on debugpy will trigger this warning. Apps are generally not affected as DeprecationWarning is filtered by default. But it's usually enabled in test runs, so libraries and apps that specifically import debugpy will see those failures in the run logs (and possibly failed tests, if set up to fail on warning).