With the death of Booklore and me not really liking Calibre, there is a new eBook manager being created called Grimmory, and another called Bookie. I have managed to manually add Bookie and it is a good start, but Grimmory looks a little more complex to setup. If these could get added to the store that would be awesome!
Yes, I was also interested in this and can’t find it in the Zimmeros repos, nor big bear and others.
I tried to install manually with a compose file with no luck. It looks like just what I’m after.
I’m running Bookie now, and I even built a reader app for Android to go with it, works pretty good.