{ lib, pkgs, config, inputs, ... }: let
  inherit (pkgs.checkpointBuildTools) prepareCheckpointBuild mkCheckpointBuild;
  linux-cached = prepareCheckpointBuild pkgs.linux-ptv;
  linux-changed = pkgs.linux-ptv;
  linux-ptv = pkgs.checkpointBuildTools.mkCheckpointBuild linux-changed linux-cached;
in {
#  boot.kernelPackages = pkgs.linuxPackagesFor linux-ptv;
  boot.kernelParams = lib.mkDefault [ "console=tty0" "console=ttyS0" ];

  systemd.services."getty@tty0".enable   = lib.mkDefault true;
  systemd.services."getty@tty0".wantedBy = lib.mkDefault [ "getty.target" ];
  
  system.stateVersion = "24.05";
  nixpkgs.hostPlatform = "riscv64-linux";
  networking.hostName = "ptv";
  nix.registry.nixpkgs.flake = inputs.nixpkgs-stable;
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  nixpkgs.overlays = [
    (final: prev: {
      # https://github.com/starfive-tech/soft_3rdpart/tree/JH7110_VisionFive2_devel
      # Source of different firmware/3rd party sw and fw
      img-rogue-firmware = pkgs.stdenv.mkDerivation {
        pname = "img-gpu-powervr";
        version = "36-working-on-it";

        src = ./rgx-img-gpu-firmware.tar.gz;
        dontBuild = true;
        
        passthru = {
          compressFirmware = false;
        };

        installPhase = ''
          runHook preInstall

          mkdir -p $out/lib/firmware
          cp * $out/lib/firmware

          runHook postInstall
        '';
      };
    })
    (import ./pkgs)
  ];

  imports = [
    "${inputs.nixos-hardware}/pine64/pinetab-v/sd-image.nix"
    # ./ccache.nix
    ./native-bootstrap.nix
  ];

  users.users = {
    pine64 = {
      isNormalUser = true;
      extraGroups = [ "wheel" ];
      initialHashedPassword = "$y$j9T$cuXgVIPt3n1.v7GcoXiql1$4EBlHM7sYO.lL.DTDwQzTBqSYsD01WIDZQXleCeozl8";
    };
    root = {
      initialHashedPassword = "$y$j9T$cuXgVIPt3n1.v7GcoXiql1$4EBlHM7sYO.lL.DTDwQzTBqSYsD01WIDZQXleCeozl8";
    };
  };

  networking.wireless.enable = true;
  networking.wireless.userControlled.enable = true;

  #programs.hyprland = {
    # Install the packages from nixpkgs
  #  enable = true;
    # Whether to enable XWayland
  #  xwayland.enable = true;
  #};

  environment.systemPackages = with pkgs; [
    dropbear
    busybox
    tmux
    git

    weston

    # ffmpeg
    # firefox
  ];

  hardware.firmware = pkgs.lib.mkOrder 1000 [
    pkgs.img-rogue-firmware
  ];

  services.openssh.enable = true;
}