{
  config,
  lib,
  pkgs,
  ...
}:
{
  imports = [
    ./hardware-configuration.nix
    ../disk-config.nix
  ];

  environment.shellAliases = {
    rebuild = "sudo nixos-rebuild switch --flake ~/nixos/.#nvidia";
    c = "nix-shell ~/nixos/shells/c.nix";
    js = "nix-shell ~/nixos/shells/js.nix";
    nix = "nix-shell ~/nixos/shells/nix.nix";
    rust = "nix-shell ~/nixos/shells/rust.nix";
    python = "nix-shell ~/nixos/shells/python.nix";
  };

  programs.steam.enable = true;

  nixpkgs.config.allowUnfree = true;

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

  networking.hostName = "iamhome"; # Define your hostname.

  # Configure network connections interactively with nmcli or nmtui.
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "America/New_York";

  nix.settings.experimental-features = [
    "nix-command"
    "flakes"
  ];

  # Enable Desktop Environment.
  services.displayManager.cosmic-greeter.enable = true;
  services.desktopManager.cosmic.enable = true;

  services.flatpak.enable = true;
  hardware.graphics.enable = true;

  # Enable CUPS to print documents.
  services.printing.enable = true;
  services.printing.cups-pdf.enable = true;
  services.printing.webInterface = false;
  services.printing.drivers = with pkgs; [ brlaser ];
  services.avahi = {
    enable = true;
    nssmdns4 = true;
    openFirewall = true;
  };

  # Enable sound.
  services.pipewire = {
    enable = true;
    pulse.enable = true;
  };

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

  programs.bash.enable = true;
  programs.bash.completion.enable = true;

  users.users.ifrahim = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    initialPassword = "Smsia2004";
  };

  environment.systemPackages = with pkgs; [
    home-manager
  ];

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

  networking.firewall.enable = true;
  networking.firewall.allowedTCPPorts = [
    631
    22
  ];

  # /etc/nixos/configuration.nix snippet

  virtualisation.docker.enable = true; # or podman

  # OCI Container configuration
  virtualisation.oci-containers = {
    backend = "docker"; # or "podman"
    containers = {
      my-nginx = {
        image = "nginx:latest";
        autoStart = true;
        ports = [
          "8080:80" # Host:Container port mapping
        ];
      };
    };
  };
  # This option defines the first version of NixOS you have installed on this particular machine,
  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
  #
  # Most users should NEVER change this value after the initial install, for any reason,
  # even if you've upgraded your system to a new NixOS release.
  #
  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
  # to actually do that.
  #
  # This value being lower than the current NixOS release does NOT mean your system is
  # out of date, out of support, or vulnerable.
  #
  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
  # and migrated your data accordingly.
  #
  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
  system.stateVersion = "25.11"; # Did you read the comment?
}