nix-starter-configs/nixos/configuration.nix

# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)

{ inputs, lib, config, pkgs, ... }: {

  imports = [
    # If you want to use modules from other flakes (such as nixos-hardware), use something like:
    # inputs.hardware.nixosModules.common-cpu-amd
    # inputs.hardware.nixosModules.common-ssd

    # It's strongly recommended you take a look at
    # https://github.com/nixos/nixos-hardware
    # and import modules relevant to your hardware.

    # Import your generated (nixos-generate-config) hardware configuration
    ./hardware-configuration.nix

    # You can also split up your configuration and import pieces of it here.
  ];

  # This will add your inputs as registries, making operations with them (such
  # as nix shell nixpkgs#name) consistent with your flake inputs.
  nix.registry = lib.mapAttrs' (n: v: lib.nameValuePair n { flake = v; }) inputs;

  # Will activate home-manager profiles for each user upon login
  # This is useful when using ephemeral installations
  environment.loginShellInit = ''
    [ -d "$HOME/.nix-profile" ] || /nix/var/nix/profiles/per-user/$USER/home-manager/activate &> /dev/null
  '';

  nix = {
    # Make sure we have at least nix 2.4
    # TODO: You can remove me if you're using NixOS 22.05+
    package = pkgs.nixFlakes;
    # Enable flakes and new 'nix' command
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
    autoOptimiseStore = true;
  };

  # Remove if you wish to disable unfree packages for your system
  nixpkgs.config.allowUnfree = true;

  # FIXME: Add the rest of your current configuration

  # TODO: Set your hostname
  networking.hostName = "cool-computer";

  # TODO: This is just an example, be sure to use whatever bootloader you prefer
  boot.loader.systemd-boot.enable = true;

  # TODO: Configure your system-wide user settings (groups, etc), add more users as needed.
  users.users = {
    # FIXME: Replace with your username
    you = {
      isNormalUser = true;
      openssh.authorizedKeys.keys = [
        # TODO: Add your SSH public key(s) here, if you plan on using SSH to connect
      ];
      # TODO: Be sure to add any other groups you need (such as networkmanager, audio, docker, etc)
      extraGroups = [ "wheel" ];
    };
  };

  # This setups a SSH server. Very important if you're setting up a headless system.
  # Feel free to remove if you don't need it.
  services.openssh = {
    enable = true;
    # Forbid root login through SSH.
    permitRootLogin = "no";
    # Use keys only. Remove if you want to SSH using password (not recommended)
    passwordAuthentication = false;
  };
}