Raspberry Pi 3B+ NixOS configuration file

configuration.nix

{ config, pkgs, ... }:

{

  boot.loader.grub.enable = false;
  boot.loader.generic-extlinux-compatible.enable = true;
  boot.loader.raspberryPi = {
    enable = true;
    version = 3;
    uboot.enable = true;
  };
  
  boot.kernelPackages = pkgs.linuxPackages_latest;
  boot.kernelParams = [ "cma=32M" ];
  boot.initrd.kernelModules = [ "vc4" "bcm2835_dma" "i2c_bcm2835" ];

  fileSystems = {
    "/boot" = {
      device = "/dev/disk/by-label/NIXOS_BOOT";
      fsType = "vfat";
    };
    "/" = {
      device = "/dev/disk/by-label/NIXOS_SD";
      fsType = "ext4";
    };
  };
  
  swapDevices = [
    { device = "/swapfile"; size = 1024; }
  ];
  
  hardware.enableRedistributableFirmware = true;
  networking.wireless.enable = false;
  
  services.openssh = {
    enable = true;
    permitRootLogin = "yes";
  };
  
  documentation.nixos.enable = false;

}