Build error with incremental installed

[dschepler]

On my system (Linux x86_64), when I try to build python-dbusmock (version 0.32.1) from source, I get errors:

python3 -m pip wheel /home/unfrobbed-dev/pkgs/python-dbusmock/python-dbusmock-0.32.1 -w /home/unfrobbed-dev/pkgs/python-dbusmock/python-dbusmock-0.32.1/debian/obj-amd64 --no-build-isolation --no-index --no-deps
Processing /home/unfrobbed-dev/pkgs/python-dbusmock/python-dbusmock-0.32.1
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [35 lines of output]
      Traceback (most recent call last):
        File "/usr/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/usr/lib/python3.12/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/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 149, in prepare_metadata_for_build_wheel
          return hook(metadata_directory, config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/lib/python3.12/site-packages/setuptools/build_meta.py", line 368, in prepare_metadata_for_build_wheel
          self.run_setup()
        File "/usr/lib/python3.12/site-packages/setuptools/build_meta.py", line 313, in run_setup
          exec(code, locals())
        File "<string>", line 7, in <module>
        File "/usr/lib/python3.12/site-packages/setuptools/__init__.py", line 108, in setup
          return distutils.core.setup(**attrs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/lib/python3.12/site-packages/setuptools/_distutils/core.py", line 146, in setup
          _setup_distribution = dist = klass(attrs)
                                       ^^^^^^^^^^^^
        File "/usr/lib/python3.12/site-packages/setuptools/dist.py", line 278, in __init__
          _Distribution.__init__(self, dist_attrs)
        File "/usr/lib/python3.12/site-packages/setuptools/_distutils/dist.py", line 286, in __init__
          self.finalize_options()
        File "/usr/lib/python3.12/site-packages/setuptools/dist.py", line 630, in finalize_options
          ep(self)
        File "/usr/lib/python3.12/site-packages/incremental/__init__.py", line 402, in _get_setuptools_version
          config = _load_pyproject_toml("./pyproject.toml")
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/lib/python3.12/site-packages/incremental/__init__.py", line 518, in _load_pyproject_toml
          path=_findPath(os.path.dirname(toml_path), package),
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/lib/python3.12/site-packages/incremental/__init__.py", line 370, in _findPath
          raise ValueError(
      ValueError: Can't find the directory of package python-dbusmock: I looked in ./src/python-dbusmock and ./python-dbusmock
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

If I temporarily remove the incremental package, or if I create a symbolic link from python-dbusmock to dbusmock, either one seems to work around the issue. My guess (which could very well be wrong) is that if incremental is installed, then the dynamic = ["version"] line in pyproject.toml activates it.