[suprezg]

I am currently working on a fork of Calibre and want to separate all code and files related solely to the ebook viewer into a dedicated directory. My goal is to make the viewer runnable as a standalone application by executing main.py from src/calibre/gui2/viewer.

If this separation is not feasible, I would like to know how I can write my own viewer that leverages Calibre’s ebook viewer features, such as read aloud, search, highlights, and bookmarks. Which classes or modules should I study so I can invoke these functionalities from my own code?

Additionally, I have noticed that running python -m src.calibre.gui2.viewer.main results in errors like "polyglot module not found," and even after fixing that, other errors appear. However, running calibre-debug -c "from calibre.gui2.viewer.main import main; main()" works fine and launches the viewer. What does calibre-debug do in the backend to make this work, and how can I replicate this behavior in my own setup?

Are there any tips or sources available for organizing the Calibre source code?

Any guidance or insights would be helpful!!!