nix-starter-configs/minimal/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.
  ];

  nix = {
    # This will add each flake input as a registry
    # To make nix3 commands consistent with your flake
    registry = lib.mapAttrs (_: value: { flake = value; }) inputs;

    # This will additionally add your inputs to the system's legacy channels
    # Making legacy nix commands consistent as well, awesome!
    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") config.nix.registry;
  };

  nix = {
    settings = {
      # Enable flakes and new 'nix' command
      experimental-features = "nix-command flakes";
      # Deduplicate and optimize nix store
      auto-optimise-store = true;
    };
  };

  # FIXME: Add the rest of your current configuration

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

  # 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
    your-username = {
      # TODO: You can set an initial password for your user.
      # If you do, you can skip setting a root password by passing '--no-root-passwd' to nixos-install.
      # Be sure to change it (using passwd) after rebooting!
      # initialPassword = "correcthorsebatterystaple";
      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 sets up 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;
  };

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "22.05";
}