Hm, not really. It has build scripts which you do whatever you want to build your package and put somewhere and then it adjusts PYTHONPATH dynamically at runtim

Hm, not really. It has build scripts which you do whatever you want to build your package and put somewhere and then it adjusts PYTHONPATH dynamically at runtime. You don't need Pip if you're using rez. You also don't use a setup.py, you use a package.py instead.