Ok I've got a very early stage

jupyter-book

plug-in. See the discussion here https://github.com/pantsbuild/pants/discussions/17789#discussioncomment-4700026 Where I also link to my repo where the plug-in is setup. Hoping for testers if anyone wants to fork the repo and try

/.pants jupyter-book ::

If you don't have time to test, comments on the discussion are helpful. Or follow up here