nixos-raspi4-configuration.nix

configuration.nix

{ config, libs, pkgs, ... }:

{
#################
## NixOS Version
#################
  system.stateVersion = "20.03";

###########
## Imports
###########
  imports =
    [ 
      ./hardware-configuration.nix
    ];

##############
## Bootloader
##############
  boot = {
    loader.grub.enable = false;
    loader.raspberryPi.enable = true;
    loader.raspberryPi.version = 4;
    kernelPackages = pkgs.linuxPackages_rpi4;
  };

###########
## Network
###########
  networking = {
    hostName = "nixos";
    useDHCP = false;
    interfaces.eth0.useDHCP = true;
  };

##########
## Locale
##########
  i18n.defaultLocale = "en_US.UTF-8";

###########
# TimeZone
###########
  time.timeZone = "America/Los_Angeles";

#########
## Fonts 
#########
  console = {
    font = "Lat2-Terminus16";
    keyMap = "us";
  };

#######
## SSH
#######
  services.openssh = {
    enable = true;
    permitRootLogin = "yes";
    passwordAuthentication = false;
    challengeResponseAuthentication = false;
  };
  
  systemd.services.sshd.wantedBy = pkgs.lib.mkForce [ "multi-user.target" ];
  
#########
## Users  
#########
  users.users.$USERNAME = {
    isNormalUser = true;
    home = "/home/$USERNAME";
    extraGroups = [ "wheel" "networkmanager" ];
    openssh.authorizedKeys.keys = [ "$YOUR_PUBLIC_KEY" ];
  };

###############
## Global Apps
###############
  environment.systemPackages = with pkgs; [
    vim
  ];
  
}

• Full readme here: https://gist.github.com/chrisanthropic/2e6d3645f20da8fd4c1f122113f89c06
• matching hardware-configuration.nix here: https://gist.github.com/chrisanthropic/14e726da7fe39aba038b8488001e6254