configuration.nix

{ config, lib, pkgs, ... }:

with lib;

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      # Machine specific configuration (eg. networking.hostName = "foo");
      <machine-config>
    ];

  config = {

    nix.distributedBuilds = true;
    nix.buildMachines = mkIf (config.networking.hostName != "foo")
      [ { hostName = "foo"; sshUser = "foo"; sshKey = "/var/run/keys/foo_rsa"; system = "x86_64-linux,i686-linux"; maxJobs = 8; }
      ];

  };
}