Will installing robotpy 'block out' other languages?

I remember browsing the robotpy docs and seeing that installing robotpy would not prevent deployment of java/c++ code to the RoboRio. I wanted to install robotpy onto our team’s rio to do some sandboxing.

I assume that the installation of another package wouldn’t stop the RoboRio from running a java or c++ program. Am I correct?

Correct, installation of RobotPy would not stop you from deploying a project that uses C++/Java.