So MacOSX builds can be done through gitian.
It's good to know that, because this could be a road to follow.
@backpacker, can you imagine supporting the setup of such a build system?
That might be "a little bit" more costly than what you are currently offering, but I think it's required, if Nu wants to produce high quality builds.
As both Nu and Blocks&Chains Exchange profit from that, the might share the costs.