# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)

{ inputs, outputs, lib, config, pkgs, ... }: {
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];
  
  nixpkgs = {
    overlays = [
      outputs.overlays.additions
      outputs.overlays.modifications
      outputs.overlays.unstable-packages
    ];
    config = {
      allowUnfree = true;
    };
  };

  nix = {
    autoOptimiseStore = true;
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 30d";
    };
    # Free up to 1GiB whenever there is less than 100MiB left.
    extraOptions = ''
      min-free = ${toString (100 * 1024 * 1024)}
      max-free = ${toString (1024 * 1024 * 1024)}
    '';
    
    registry = lib.mapAttrs (_: value: { flake = value; }) inputs;
    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") config.nix.registry;
    settings = {
      experimental-features = "nix-command flakes";
      auto-optimise-store = true;
    };
  };

  boot = {
    kernelPackages = pkgs.linuxPackages_rpi4;
    tmpOnTmpfs = true;
    initrd.availableKernelModules = [ "usbhid" "usb_storage" ];
    # ttyAMA0 is the serial consolee broken out to the GPIO
    kernelParams = [
      "8250.nr_uarts=1"
      "console=ttyAMA0,115200"
      "console=tty1"
      # A lot of GUI programs need this, nearly all wayland applications
      "cma=128M"
    ];
  };

  # Required for the Wireless firmware
  hardware.enableRedistributableFirmware = true;
  
  networking = {
    hostName = "lavender";
    networkmanager = {
      enable = true;
    };
  };

  
    
    
  
  # Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
  boot.loader.grub.enable = false;
  # Enables the generation of /boot/extlinux/extlinux.conf
  boot.loader.generic-extlinux-compatible.enable = true;

  # networking.hostName = "nixos"; # Define your hostname.
  # Pick only one of the below networking options.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
  # networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.

  # Set your time zone.
  # time.timeZone = "Europe/Amsterdam";

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Select internationalisation properties.
  # i18n.defaultLocale = "en_US.UTF-8";
  # console = {
  #   font = "Lat2-Terminus16";
  #   keyMap = "us";
  #   useXkbConfig = true; # use xkbOptions in tty.
  # };

  # Enable the X11 windowing system.
  # services.xserver.enable = true;


  

  # Configure keymap in X11
  # services.xserver.layout = "us";
  # services.xserver.xkbOptions = {
  #   "eurosign:e";
  #   "caps:escape" # map caps to escape.
  # };

  # Enable CUPS to print documents.
  # services.printing.enable = true;

  # Enable sound.
  # sound.enable = true;
  # hardware.pulseaudio.enable = true;

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.admin = {
     isNormalUser = true;
     extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
   };

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
    wget
    git
    home-manager
  ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  programs.gnupg.agent = {
    enable = true;
    enableSSHSupport = true;
  };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    permitRootLogin = "no";
  };

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "22.11"; # Did you read the comment?

}