This mainly applies to the `oe` python package, but potentially also the other extensible python packages like those in scripts, depending on their particular plugin load method. See https://packaging.python.org/guides/packaging-namespace-packages/#creating-a-namespace-package. pkgutil style have limitations that we need to work around one way or the other, either we do this migration, or the oe_import logic needs to reimport all the packages to be imported to ensure new path additions are picked up.