nix-flake/system/chromebook/configuration.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, lib, unstable, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];

  # legacy boot
  #boot.loader.grub.enable = true;
  #boot.loader.grub.device = "/dev/vda";
  #boot.loader.grub.useOSProber = true;

  # UEFI boot
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  #boot.loader.efi.efiSysMountPoint = "/boot/efi";

  boot.binfmt.registrations.appimage = {
    interpreter = "${pkgs.appimage-run}/bin/appimage-run";
    recognitionType = "magic";
    offset = 0;
    mask = ''\xff\xff\xff\xff\x00\x00\x00\x00\xff\xff\xff'';
    magicOrExtension = ''\x7fELF....AI\x02'';
  };

  # boot logo
  boot.plymouth.enable = true;

  # ZRAM
  zramSwap.enable = true;
  zramSwap.memoryPercent = 50;
  boot.kernel.sysctl = {
    "vm.swappiness" = 10;
    "vm.vsf_cache_pressure" = 50;
  };

  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];

  boot.kernelPackages = pkgs.linuxPackages_xanmod_stable;
  #boot.extraModulePackages = with config.boot.kernelPackages; [ v4l2loopback ];

  networking.hostName = "vincents-chonky-hp"; # Define your hostname.
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "America/New_York";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";
  console = {
    font = "Lat2-Terminus16";
    useXkbConfig = true;
  };
  #fonts.packages = [ pkgs.corefonts ];

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

  # displaylink
  #services.xserver.videoDrivers = [ "displaylink" "modesetting" ];

  # waydroid
  #virtualisation.waydroid.enable = true;

  # Enable the Cinnamon Desktop Environment.
  services.xserver.displayManager.lightdm.enable = true;
  services.xserver.desktopManager.xfce.enable = true;
  #programs.kdeconnect.enable = true;

  # Configure keymap in X11
  services.xserver = {
    xkb.layout = "us";
    #xkb.variant = "colemak";
    xkb.model = "chromebook";
  };
  services.xserver.xkb.options = "grp:win_space_toggle";

  # Enable CUPS to print documents.
  #services.printing.enable = true;
  #services.printing.openFirewall = true;
  #services.avahi.enable = true;
  #services.avahi.nssmdns4 = true;
  #services.avahi.openFirewall = true;
  #services.printing.drivers = [ pkgs.hplip ];

  # Enable sound with pipewire.
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    jack.enable = true;

    # use the example session manager (no others are packaged yet so this is en>
    # no need to redefine it in your config for now)
    wireplumber.enable = true;
  };
  #programs.noisetorch.enable = true;

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

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.vincent = {
    isNormalUser = true;
    shell = pkgs.fish;
    initialHashedPassword = "$y$j9T$0PPbSXGEwyGq6ZFvJMhmE/$D5ZlKOwR/4NCDD8eaxWiQiG1TTRSK4PfbQe/Tm60Id/";
    extraGroups = [ "wheel" "networkmanager" "uniput" "lp" "audio" "video" "cdrom" "input" "libvirtd" "dialout" ];
  };
  programs.fish.enable = true;

  nix.extraOptions = ''experimental-features = nix-command flakes'';

  nixpkgs.config.permittedInsecurePackages = [
    "electron-12.2.3"
    "electron-27.3.11"
  ];

  nixpkgs.config.allowUnfree = true;

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment = {
    systemPackages = with pkgs; [
      bleachbit
      btop
      git
      clamtk
      topgrade
      appimage-run
      nano
      # 3d pirint
      freecad
      orca-slicer
      # package manager
      wget
      # web browser
      librewolf
    ];
  };


  # bluetooth
  hardware.bluetooth.enable = true;

  # dconf
  programs.dconf.enable = true;

  # enable the tailscale service
  services.tailscale.enable = true;

  # 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:

  # preload
  services.preload.enable = true;

  # schedualer
  services.system76-scheduler.enable = true;

  # Enable the OpenSSH daemon.
  services.openssh.enable = false;

  # auto clean
  nix.optimise.automatic = true;

  # enable fwupd
  services.fwupd.enable = true;

  # auto update
  system.autoUpgrade.enable = true;
  system.autoUpgrade.allowReboot = true;
  system.autoUpgrade.rebootWindow = {
    lower = "01:00";
    upper = "05:00";
  };

  #clamav
  services.clamav.updater.enable = true;
  services.clamav.daemon.enable = true;


  # audit
   security.auditd.enable = true;
   security.audit.enable = true;
   security.audit.rules = [
     "-a exit,always -F arch=b64 -S execve"
   ];


  # Open ports in the firewall.
  networking.firewall.allowedTCPPorts = [
     22
  ];
#  networking.firewall.allowedUDPPorts = [
#    48002
#  ];
  networking.firewall.allowedTCPPortRanges = [
     {
       from = 1714;
       to = 1764;
     }
  ];
  networking.firewall.allowedUDPPortRanges = [
     {
       from = 1714;
       to = 1764;
     }
  ];
  networking.firewall.rejectPackets = true;
  # networking.firewall.allowedUDPPorts = [ 21116 ];
  # Or disable the firewall altogether.
  networking.firewall.trustedInterfaces = [ "tailscale0" ];

  services.fail2ban.enable = true;
  networking.firewall.enable = 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 = "24.11"; # Did you read the comment?

}