os/shared/core/nix.nix

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

let cfg = config.custom.nix;

in with lib; {

  options.custom.nix = {
    distributedBuilds.enable = mkEnableOption "distributed builds on strawberry";
  };

  # TODO: Add strawberry as a build machine here
  config = {
    nixpkgs.config.allowUnfree = true;
  	nix = {
  		distributedBuilds = true;
  		buildMachines = [{
        hostName = "strawberry";
        sshUser  = "nix-build";
        sshKey   = "/etc/ssh/ssh_host_ed25519_key";

        systems = [
          "x86_64-linux"
          "aarch64-linux"
        ];

        supportedFeatures = [
          "nixos-test"
          "benchmark"
          "big-parallel"
          "kvm"
        ];
  		}];
      extraOptions = ''
        experimental-features = nix-command flakes
      '';
      registry.nixpkgs.flake = nixpkgs;
      registry.pwnix.flake = pwnix;
      settings.trusted-users = [
        "@wheel"
        "root"
      ];
  	};
  };

}