There is a lib foo, it use entry_points to discover plugin. There is a lib bar, it provides plugin for lib foo. As entry_points is working with distribution tools like setuptools, I don't know how to use this mechanism to discover plugin in development, which means I don't want to pip install lib bar. My build tool is bazel, so I want to define a py_lib foo and py_lib bar, and foo can use entry_point to find bar's plugin.
I tried to look into entrypoint's doc, and there is nothing about development, it seems it is only designed to use with distribution.