a reminder what a nixos nearly-out-of-the-box config looks like

configuration.nix

{ config, pkgs, ... }:

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

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "laptop"; # Define your hostname.
  networking.networkmanager.enable = true;
  time.timeZone = "Europe/London";

  i18n.defaultLocale = "en_GB.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_GB.UTF-8";
    LC_IDENTIFICATION = "en_GB.UTF-8";
    LC_MEASUREMENT = "en_GB.UTF-8";
    LC_MONETARY = "en_GB.UTF-8";
    LC_NAME = "en_GB.UTF-8";
    LC_NUMERIC = "en_GB.UTF-8";
    LC_PAPER = "en_GB.UTF-8";
    LC_TELEPHONE = "en_GB.UTF-8";
    LC_TIME = "en_GB.UTF-8";
  };

  services.xserver.enable = true;

  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome = {
   enable = true;
   extraGSettingsOverridePackages = [ pkgs.gnome.mutter ];
   extraGSettingsOverrides = ''
     [org.gnome.mutter]
     experimental-features=['scale-monitor-framebuffer']
   '';
  };

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

  services.printing.enable = true;

  sound.enable = false;
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    jack.enable = true;
  };

  users.users.oatman = {
    isNormalUser = true;
    description = "oatman";
    extraGroups = [ "networkmanager" "wheel" ];
  };

  nixpkgs.config.allowUnfree = true;

  environment.systemPackages = with pkgs; [
    vim
  ];

  system.autoUpgrade.enable = true;
  system.stateVersion = "23.11"; # Did you read the comment?

}