simple-hydra with hydra-master

configuration.nix

{ config, pkgs, lib, ...}:
{
  services.hydra.package = pkgs.hydra.overrideAttrs (o: { src = (pkgs.fetchFromGitHub {
         owner = "nixos";
         repo = "hydra";
         rev = "e0f204f3da6245fbaf5cb9ef59568b775ddcb929";
         sha256 = "66002da8d68027b8a5edaf03bd81dd8b6327397311d71398776e1d3ef1ec96e1";
         });
       });
  imports = [
          /root/simple-hydra
          <nixpkgs/nixos/modules/virtualisation/amazon-image.nix>
          ];
  ec2.hvm = true;
  simple-hydra.enable = true;
  simple-hydra.hostName = "hydra.example.org";
  simple-hydra.useNginx = false;

  networking.firewall.allowedTCPPorts = [ 3000 ];

 }