> Clone the GitHub repo, … build from source, update manually
I’d be ok to do that once per extension, but then I’ve got multiple PCs (m), multiple browser profiles (p), OS-reimages (r), and each extension (e) locally installed doesn’t sync — manually re-installing local extensions m x p x r x e times is too much for me. :-( (And that’s even if I’m only running Chrome, as opposed to multiple browser or Chromium derivatives.)