I really want a general purpose optimizing query tool that makes it very easy to add backends to the point where I can do it in the fly.<p>For example I want to ask questions like for the accounts listed in this file what ones committed the most lines of code across these three repos where that might involve cloning git repositories and scraping websites to merge accounts and ideally I would be able to specify some sort of cost model so for example it just looks up accounts as needed but would calculate all commit authors at once.<p>These data sources could be HTTP and JSON or regex extraction or shell scripts, and ideally I would be able to reuse the providers that I acrue over time.<p>This project looks nice but seems aimed at SaaS providers whereas I would like to also hook up things on my filesystem, custom services, and whatever other data sources I want.