alt Hacker NewsI have used a version of this called Qvwm, and even had branched it off at some point to fix some bugs... https://ahinea.com/en/tech/qvwm/ (I don't think github existed at the time or maybe I didn't know about it.)
P.S. Oh, there is the official Qvwm page: https://sourceforge.net/projects/qvwm/files/qvwm/
About 5 years ago I got qvwm working on a modern system and put it on github: https://github.com/asveikau/qvwm
I don't recall what was broken, but it was a few random things. I also added xrender image scaling on the window decorations, because they were hardcoded to a size that was tiny on modern DPI.