profiles/remote-builder.nix


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{ ... }:
{
  nix.buildMachines = [
    {
      hostName = "vm-synology";
      sshUser = "builder";

      # 'ssh-ng' is faster if both machines are NixOS but falls flat if the
      # machine Nix will attempt a connection to is not NixOS. In such a case
      # you must use 'ssh' instead.
      protocol = "ssh-ng";

      # Systems for which builds will be offloaded.
      systems = [
        "x86_64-linux"
      ];

      # Default is 1 but may keep the builder idle in between builds
      maxJobs = 1;

      supportedFeatures = [
        "nixos-test"
      ];
    }
  ];

  nix.distributedBuilds = true;

  programs.ssh.extraConfig = ''
    Host builder
      User builder
      HostName vm-synology
  '';
}