After years of FVWM I'm trying awesome. Not that I'm not satisfied with FVWM but more a check on other highly configurable VM (and light!)
Install Awesome! ( I also installed dex rlwrap vicious )
Copy the /etc/xdg/awesome/ folder to ~/.config/awesome/
mkdir -p ~/.config/awesome/ cp -r /etc/xdg/awesome/* ~/.config/awesome/.
Change your xinitrc/*dm config to boot on awesome
Can/Should be done on Xephyr
Xephyr :1 -ac -br -noreset -screen 1152x720 & DISPLAY=:1.0 awesome -c ~/.config/awesome/rc.lua
Follow the basic wiki My First Awesome adapting it to your needs