Plugins case study: Pluggy

Recently I came upon Pluggy, a Python library for developing plugin systems. It was originally developed as part of the pytest project - known for its rich plugin ecosystem - and later extracted into a standalone library. You're supposed to reach out for Pluggy if you want to add a plugin system to your tool or library and want to use something proven rather than rolling your own. In this post I will share some notes on how Pluggy works, and will then review how it aligns with the fundamental…