system/system/configuration.nix

# 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, ... }:

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

  boot = {
    # Use the GRUB 2 boot loader.
    loader.grub = {
      enable = true;
      version = 2;
      device = "/dev/sda";
    };

    kernelPackages = pkgs.linuxPackages_latest;
    extraModulePackages = with config.boot.kernelPackages; [
      rtl88x2bu
    ];
  };

  networking = {
    hostName = "home"; # Define your hostname.
    inherit (secrets.networking) extraHosts;

    networkmanager.enable = true;

    # 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.
    useDHCP = false;

    interfaces = {
      enp3s0.useDHCP = true;
      wlp11s0f3u2.useDHCP = true;
    };
  };

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  # Set your time zone.
  time.timeZone = "Europe/Moscow";

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

  # console = {
  #   font = "Lat2-Terminus16";
  #   keyMap = "us";
  #   useXkbConfig = true; # use xkbOptions in tty.
  # };

  # Enable the X11 windowing system.
  services = {
    # Enable the OpenSSH daemon.
    openssh.enable = true;

    # Xmonad

    dbus = {
      enable = true;
      packages = [ pkgs.dconf ];
    };    

    xserver = {
      enable = true;

      xkbModel = "pc105";
      layout = "us,us";
      xkbVariant = "dvorak,";
      xkbOptions = "grp:win_space_toggle";

      xrandrHeads = [
        {
          output = "DisplayPort-1";
          primary = true;
        }
        {
          output = "HDMI-A-0";
          monitorConfig = ''
            Option "Rotate" "right"
            Option "LeftOf" "DisplayPort-1"
          '';
        }
      ];

      displayManager = {
        defaultSession = "none+xmonad";
      };

      windowManager.xmonad.enable = true;
    };
  };

  # Enable sound.
  sound = {
    enable = true;
    mediaKeys.enable = true;
  };
  hardware.pulseaudio = {
    enable = true;
    package = pkgs.pulseaudioFull;
  };

  programs.zsh.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.me = with secrets.user; {
    isNormalUser = true;
    inherit name;
    home = dir;
    extraGroups = [
      "wheel" # Enable ‘sudo’ for the user.
      "networkmanager"
      "docker"
    ]; 
    shell = pkgs.zsh;
  };

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim
    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;
  };

  virtualisation = {
    docker = {
      enable = true;
      autoPrune = {
        enable = true;
        dates = "weekly";
      };
    };
  };

  nix = {
    # Automate garbage collection
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 7d";
    };

    # Flakes settings
    package = pkgs.nixFlakes;

    extraOptions = ''
      experimental-features = nix-command flakes
    '';

    settings = {
      auto-optimise-store = true;

      trusted-users = [ "root" "janabhumi" ];
    };
  };

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # 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?

}