[Nix-dev] Is a small branch the right way to go?

[Marc Weber]

> Personally, I can live with the current scheme.
  That's because we have not that much services right now.
  But this will change in the future because I hope that some more people
  start using nixos in the future :)

May I create a services and sytem.nix branch to start working on this?
Then you can give me feedback without fearing errors ?

Thanks
Marc