missing submodules in install #1334
Description
While trying to insall sgkit in Guix I had an error with the three submodules not being found.
This can be fixed by specifying the submodules in the pyproject.toml here
https://github.com/sgkit-dev/sgkit/blob/af2b62378548b4b25a2937c21bbe95d95948cfea/pyproject.toml#L60C1-L60C21
packages = ["sgkit", "sgkit.stats", "sgkit.distance", "sgkit.io"]
Not sure if it's packaging tooling specific, but other install systems might have issues with that too.