The module is using the old compton and not compton-git by default?
I guess it will be hard to maintain a common module if they start using distinct options...

IMHO we should keep only the maintained fork from yshui repo and call it compton
It's already the source for compton pkg in Arch / Mageia / Void for example.

Yes, that seems reasonable.
I checked that the new derivation is exactly the same as the previous compton-git - only pname is different. With that at its old value it doesn't rebuild.

Add an alias compton-git = compton to avoid breaking existing users' configs

Ah nice to have a feedback from an actual compton user, thanks @Ma27

On a related note, I'm excited for yshui/picom#32

Effectively breaks some configs since compton doesn't seem to take well of duplicate settings (wintypes).

Oh you mean if you have wintypes in your extraConfig?
What do you have there?
It would be fixed if we add extraWintypesConfig?

The idea in NixOS/rfcs#42 would solve this rather well

Yes, for example in compton.sample.conf from the repository. extraWintypesConfig would fix it.

wintypes:
{
  tooltip = { fade = true; shadow = true; opacity = 0.75; focus = true; full-shadow = false; };
  dock = { shadow = false; }
  dnd = { shadow = false; }
  popup_menu = { opacity = 0.8; }
  dropdown_menu = { opacity = 0.8; }
};