Package with Git submodule doesn't build correctly

[SDGGiesbrecht (Jeremy David Giesbrecht)]

@SDGGiesbrecht

If your package is intended for import by others, you can still use the above strategy during development, but whatever commits you want to be importable (often just semantic versioned releases) will need the source moved out of the submodule and directly into the package repository.

You can certainly pitch submodule support under the evolution category, but I am not sure of all the peripheral implications.

I was wrong about this part. I was later corrected here. That thread has more information.