Backend + frontend when it can’t be done together in something like Next.js but I’m not likely to use the backend anywhere else. Here’s a recent example https://github.com/gskril/ens-adoption
Would you use a monorepo that uses different languages in its packages? Example a python flask project and a nextjs project that uses a common design system built on react.
for this repo, how is your release management be like? compile a sub repo, copy artifacts, deploy?