{ pkgs, ... }:
{
  imports = [
    ./impermanence.nix
  ];

  boot.initrd.kernelModules = [ "usb_storage" ];
  boot.initrd.luks.devices."luksroot" = {
      allowDiscards = true;
      bypassWorkqueues = true;
      keyFileSize = 4096;
      keyFile = "/dev/sda";
  };

  security.sudo = {
    extraConfig = ''
      # rollback results in sudo lectures after each reboot
      Defaults lecture = never
    '';
    wheelNeedsPassword = false;
  };

  # Use the systemd-boot EFI boot loader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.networkmanager.enable = true;

  time.timeZone = "Europe/Lisbon";

  users.mutableUsers = false;
  users.users.ppetru = {
    isNormalUser = true;
    extraGroups = [ "wheel" ];

    openssh.authorizedKeys.keys = [ "ssh-rsa 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 petru@paler.net" ];
  };

  environment.systemPackages = with pkgs; [
    vim
  ];

  services.openssh = {
    enable = true;
    allowSFTP = false;
    settings = {
      PasswordAuthentication = false;
      KbdInteractiveAuthentication = false;
    };
    extraConfig = ''
      AllowTcpForwarding yes
      X11Forwarding no
      AllowAgentForwarding no
      AllowStreamLocalForwarding no
      AuthenticationMethods publickey
    '';
  };

  networking.firewall = {
    enable = true;
    allowedTCPPorts = [ 22 ];
    allowedUDPPorts = [ ];
  };

  system.copySystemConfiguration = false; # not supported with flakes

  # 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 = "23.05"; # Did you read the comment?
}