How To Setup Application To Personalize It?

I'm working on simple opensource project. Github link. Application is written with tkinter. It is kind of calculator. I want to allow user to configure it during installation (but

Solution 1:

I believe pip is not designed to allow configuration at install-time. It is somewhat possible (under specific conditions) to do such a thing via custom setuptools commands like shown in the question for example, but there are many scenarios in which this will not work (in short: built distributions such as wheel do not contain the setup.py file, so it can't run at install-time) and many reasons why we don't want something like this to work.

A common recommendation (best practice?) is to run such customization during the first run of the application instead.