Thanks a lot although I've actually read those already - search is amazing for me as well I'd love to get some insight into how rootfs is actually built. I am not asking anybody to write long explanations just for me, just point me to the relevant wikis/threads and I will try to figure out the rest. Sorry if search works for that as well, but I find so many different development branches and components here so I am a little bit lost.
What are you looking for? I assume you've seen the repo for the rootfs?