I have packages that contain only non public code, but these packages are still listed in the index.html of the documentation. Any idea how to exclude those packages?

Is this with 0.10.0, or 0.10.1? This was apparently fixed in 0.10.1. If you're on 0.10.1, I do know of a workaround.

I thought I was on 0.10.1, but I was targeting 0.10.0. Will update. What is your workaround?

Simply by updating to 0.10.1, it solved my problem. 🙂