Currently travis supports linux (ubuntu?) and mac.
I'm currently exploring nix. I think it's a powerful way to declare the global state of your system. It's available at various level:
With the current state, I could install nix the package manager on a linux vm and get all the packages I need, great!
In my ideal world, I could do the same at the machine or at the deployment level (machine[s]).
So my question is: When will travis-ci will support NixOS? When will travis-ci will support multiple machine setup (let's say with NixOps) ?