{ config, pkgs, ... }:

{
  imports = [
    ./hardware-configuration.nix
  ];

  boot = {
    loader = {
      systemd-boot.enable = true;
      efi.efiSysMountPoint = "/boot";
    };

    tmpOnTmpfs = true;
    cleanTmpDir = true;

    kernelModules = [ "kvm-intel" ];
    binfmt.emulatedSystems = [ "armv6l-linux" "armv7l-linux" "aarch64-linux" ];
  };

  nix = {
    buildCores = 40;
    maxJobs = 4;
    package = pkgs.nixUnstable;
    trustedUsers = [ "client" ];
    extraOptions = ''
      builders-use-substitutes = true
    '';
  };

  networking.hostName = "nix-build"; # Define your hostname.

  # time.timeZone = "Europe/Amsterdam";

  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
  # Per-interface useDHCP will be mandatory in the future, so this generated config
  # replicates the default behaviour.
  networking.useDHCP = false;
  networking.interfaces.enp6s18.useDHCP = true;

  environment.systemPackages = with pkgs; [
    wget
    vim
    git
  ];

  services.openssh.enable = true;
  services.openssh.permitRootLogin = "yes";

  networking.firewall.allowedTCPPorts = [ 22 ];

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "20.09"; # Did you read the comment?
}