What is the name of this process?

Question

Programming

Let's say I have 4 projects

1) Completely written in python, makes a Dotnet dll out of the second project (well, it's easy to do)
2) A project that is written in python and yaml and just a little bit of c #, in fact, the rules of the game are described here
3) The winforms project , reads the output files of the first project
4) The asp.net project, reads the output files of the first

project a full-fledged csproj project. I understand that this idea is not new, that's why I ask what it's called.

Answer 1

Is the first project a direct project-project or is it essentially a build script for the second project?
So far, it looks like these three projects (2-4) are the modules of some system. And the first one is part of the buildscript of this system.
At least that would be the case in my JVM and Gradle world.