{ inputs, outputs, config, pkgs, ... }:

{
  nixpkgs.hostPlatform = "x86_64-linux";

  imports = [
    ./hardware-configuration.nix
    ./file-systems.nix
    ./home-manager.nix
    outputs.nixosModules.common
    outputs.nixosModules.desktop
  ];

  programs.steam.enable = true;

  environment.etc = {
    ssh-pub-key = {
      target = "ssh/ssh_host_ed25519_key.pub";
      source = ./ssh_host_ed25519_key.pub;
    };
    ssh-pub-key-cert = {
      target = "ssh/ssh_host_ed25519_key-cert.pub";
      source = ./ssh_host_ed25519_key-cert.pub;
    };
  };

  # todo: target and/or archive
  services.btrbk = {
    sshAccess = [{
      roles = [ "info" "source" "target" "delete" "snapshot" "send" "receive" ];
      key =
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAJy2lSOeG4iCUlk+W0TK9DnJyHe/0XUU0PD0kokbWKF btrbk";
    }];
    instances.btrbk = {
      onCalendar = "*:0/30"; # every 30 minutes
      settings = {
        snapshot_preserve = "2d";
        snapshot_preserve_min = "latest";
        snapshot_create = "onchange";
        volume."/mnt/btr_user" = {
          snapshot_dir = "btrbk_snapshots";
          subvolume = {
            data = { };
            persist = { };
          };
        };
      };
    };
  };

  networking = {
    hostName = "trantor";
    interfaces = {
      enp3s0f1.useDHCP = true;
      wlp4s0.useDHCP = true;
    };
    networkmanager.wifi.macAddress = "80:FA:5B:41:12:0F";
  };

  services.xserver = { videoDrivers = [ "nvidia" ]; };
  hardware.nvidia = {
    nvidiaPersistenced = true;
    modesetting.enable = true;
    prime = {
      sync.enable = true;
      nvidiaBusId = "PCI:1:0:0";
      intelBusId = "PCI:0:2:0";
    };
  };

  system.stateVersion = "23.05";
}