PYTHON-3760 brakes installing pymongo within a tox environment where gcc is not available. Reported here: https://github.com/mongodb/mongo-python-driver/pull/1255#issuecomment-1728378040

Unfortunately PYTHON-3760 brakes installing pymongo within a tox environment where gcc is not available. I guess, I need to set the NO_EXT environment then?

EDIT:
Setting NO_EXT leads to different version, last working version is 4.4.1

$ export NO_EXT=1
$ pip install pymongo

Collecting pymongo
  Downloading https://pypi.sozvers.at/root/pypi/%2Bf/681/f252e43b3ef05/pymongo-4.5.0.tar.gz (848 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 848.7/848.7 kB 13.9 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [18 lines of output]
      Traceback (most recent call last):
        File "/usr/local/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/usr/local/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/local/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
          return hook(config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-53sxbup9/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 355, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=['wheel'])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-53sxbup9/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 325, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-53sxbup9/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 341, in run_setup
          exec(code, locals())
        File "<string>", line 119, in <module>
      ValueError: list.remove(x): x not in list
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.