/tmp/build-env-4g46qohc/lib/python3.11/site-packages/setuptools/command/build_py.py:212: _Warning: Package 'adafruit_imageload.pnm.pgm' is absent from the `packages` configuration. !! ******************************************************************************** ############################ # Package would be ignored # ############################ Python recognizes 'adafruit_imageload.pnm.pgm' as an importable package[^1], but it is absent from setuptools' `packages` configuration. This leads to an ambiguous overall configuration. If you want to distribute this package, please make sure that 'adafruit_imageload.pnm.pgm' is explicitly added to the `packages` configuration field. Alternatively, you can also rely on setuptools' discovery methods (for example by using `find_namespace_packages(...)`/`find_namespace:` instead of `find_packages(...)`/`find:`). You can read more about "package discovery" on setuptools documentation page: - https://setuptools.pypa.io/en/latest/userguide/package_discovery.html If you don't want 'adafruit_imageload.pnm.pgm' to be distributed and are already explicitly excluding 'adafruit_imageload.pnm.pgm' via `find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`, you can try to use `exclude_package_data`, or `include-package-data=False` in combination with a more fine grained `package-data` configuration. You can read more about "package data files" on setuptools documentation page: - https://setuptools.pypa.io/en/latest/userguide/datafiles.html [^1]: For Python, any directory (with suitable naming) can be imported, even if it does not contain any `.py` files. On the other hand, currently there is no concept of package data directory, all directories are treated like packages. ********************************************************************************