> - There's only one global repository. If you want to build some libraries and reuse them the same way you'd use a normal library dependency, you have to publish them to the global PyPi. I think there might be an expensive service that works around this, but there's no repository program that you can just spin up on your own servers.

You can setup proxy such as Nexus, which allows hosting your own librarires: https://help.sonatype.com/repomanager3/formats/pypi-reposito...