# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports = [ # Include the results of the hardware scan.
    ./hardware-configuration.nix
  ];

  users.users.alice = {
    isNormalUser = true;
    shell = pkgs.bash;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    # My SSH keys.
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPAZhFDzl1lbhWJ7MiTV3+Z1EY8M5b4cH/+ju4uo1d91 admin"
    ];
    packages = with pkgs; [ emacs vim ];
  };

  # Use my SSH keys for logging in as root.
  users.users.root.openssh.authorizedKeys.keys =
    config.users.users.alice.openssh.authorizedKeys.keys;  

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

  networking.hostName = "demiurge"; # Define your hostname.
  # Pick only one of the below networking options.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
  networking.networkmanager.enable =
    true; # Easiest to use and most distros use this by default.

  # Set your time zone.
  time.timeZone = "US/Central";

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Select internationalisation properties.
  # i18n.defaultLocale = "en_US.UTF-8";
  # console = {
  #   font = "Lat2-Terminus16";
  #   keyMap = "us";
  #   useXkbConfig = true; # use xkbOptions in tty.
  # };

  # Enable the X11 windowing system.
  # services.xserver.enable = true;

  nix.settings.require-sigs = true;

  # Configure keymap in X11
  services.xserver.layout = "us";

  # Enable CUPS to print documents.
  # services.printing.enable = true;

  # Enable sound.
  # sound.enable = true;
  # hardware.pulseaudio.enable = true;

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  # environment.systemPackages = with pkgs; [
  #   vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
  #   wget
  # ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services = {
    tailscale.enable = true;
    openssh.enable = true;
  };

  # Configure ssh auth for sudo/pam
  security.sudo.enable = true;
  security.pam.enableSSHAgentAuth = true;
  security.pam.services.sudo.sshAgentAuth = true;
  security.sudo.wheelNeedsPassword = false;
    
  # Open ports in the firewall.
  networking.firewall.allowedTCPPorts = [ 22 80 443 ];
  networking.firewall.checkReversePath = "loose";
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # 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 = "22.11"; # Did you read the comment?

}