rpi3-configurations/hardware-configuration.nix

# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, modulesPath, ... }:

{
  imports = [ ];

  boot = {
    tmp.cleanOnBoot = true;
    kernelModules = [ "cma=256M" ];
    extraModulePackages = [ ];

    loader = {
      grub = {
        device = "nodev";
        enable = false;
      };

      raspberryPi = {
        enable = true;
        version = 3;
        firmwareConfig = ''
          gpu_mem=256
        '';

        uboot = {
          enable = true;
          configurationLimit = 10;
        };
      };
    };
  };

  fileSystems."/nix" = {
    device = "/dev/disk/by-uuid/44444444-4444-4444-8888-888888888888";
    fsType = "ext4";
    options = [
      "discard"
      "noatime"
    ];
  };

  fileSystems."/mnt" = {
    fsType = "ext4";
    device = "/dev/disk/by-uuid/e419e4b8-d51c-4d5f-ad9f-91c4c0c4a52d";
    options = [
      "mode=777"
      "umask=000"
      "nodev"
      "noexec"
      "discard"
      "noatime"
    ];
  };

  swapDevices = [
    {
      device = "/swapfile";
    }
  ];

  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
  # (the default) this is the recommended approach. When using systemd-networkd it's
  # still possible to use this option, but it's recommended to use it in conjunction
  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
  networking.useDHCP = lib.mkDefault true;
  # networking.interfaces.enu1u1u1.useDHCP = lib.mkDefault true;
  # networking.interfaces.wlan0.useDHCP = lib.mkDefault true;

  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  hardware.enableRedistributableFirmware = true;
}