Ask HN: Interest in a pgvector-based RAG system library?

I built a RAG system using pgvector as the backend for local-first vector search. I've already extracted and open-sourced the text extraction component as Kreuzberg (https://github.com/Goldziher/kreuzberg), separate from my main business (https://grantflow.ai).

The core system is fairly generic and could work for many use cases with minimal changes. Before investing time in packaging it as a library, I'm curious:

- Would the HN community find value in a pgvector-based RAG library? - What features would be most important to you? - What belongs in open source vs. commercial offerings? - What common pitfalls should be avoided?

I'd like to gauge if there's actual interest before publishing something nobody will use. So your Feedbacks are most welcome!