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

let
  nixPool = "nixos-zfs-nix";
in
{
  imports = [
    "${modulesPath}/virtualisation/amazon-image.nix"
  ];

  networking.hostName = "nixos-zfs-ec2";
  networking.hostId = "6e69787a";

  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  environment.systemPackages = [
    pkgs.amazon-ssm-agent
    pkgs.git
    pkgs.zfs
  ];

  services.amazon-ssm-agent.enable = true;
  services.openssh.enable = lib.mkForce false;

  boot.supportedFilesystems = [ "zfs" ];
  boot.zfs.extraPools = [ nixPool ];
  boot.zfs.forceImportRoot = false;

  fileSystems."/nix" = {
    device = "${nixPool}/nix";
    fsType = "zfs";
    neededForBoot = true;
    options = [
      "nofail"
      "x-systemd.device-timeout=30s"
    ];
  };

  systemd.sockets.nix-daemon = {
    after = [ "nix.mount" ];
    requires = [ "nix.mount" ];
  };

  systemd.services.nix-daemon = {
    after = [ "nix.mount" ];
    requires = [ "nix.mount" ];
  };

  system.stateVersion = "25.05";
}