I just use emacs-live (https://github.com/overtone/emacs-live https://github.com/overtone/emacs-live) with a few tweaks (https://github.com/jamii/emacs-live-pac

I just use emacs-live (https://github.com/overtone/emacs-live https://github.com/overtone/emacs-live) with a few tweaks (https://github.com/jamii/emacs-live-packs https://github.com/jamii/emacs-live-packs) so most of the work is done by someone else.