let
  sources = import ../nix/sources.nix;
  pkgs = import sources.nixpkgs { };
  lib = pkgs.lib;
in

{
  imports = [ ./hardware-configuration.nix ];

  # Make unfree software explicit
  nixpkgs.config.allowUnfreePredicate = pkg:
    builtins.elem (lib.getName pkg) [
      "broadcom-sta"
      "facetimehd-firmware"
    ];
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.supportedFilesystems = [ "zfs" ];
  boot.zfs.requestEncryptionCredentials = true;

  time.timeZone = "America/Chicago";

  networking.hostId = "e6ff0de6";
  networking.hostName = "siraben-nixos";
  services.zfs.autoSnapshot.enable = true;
  services.zfs.autoScrub.enable = true;

  networking.networkmanager.enable = true;
  networking.nameservers = [ "1.0.0.1" "1.1.1.1" ];

  fonts = {
    fontDir.enable = true;
    enableGhostscriptFonts = true;

    fonts = with pkgs; [
      emojione
      noto-fonts
      noto-fonts-cjk
      noto-fonts-extra
      inconsolata
      material-icons
      liberation_ttf
      dejavu_fonts
      terminus_font
      siji
      unifont
    ];
    fontconfig.defaultFonts = {
      monospace = [
        "DejaVu Sans Mono"
      ];
      sansSerif = [
        "DejaVu Sans"
        "Noto Sans"
      ];
      serif = [
        "DejaVu Serif"
        "Noto Serif"
      ];
    };
  };
  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # KDE
  services.xserver.desktopManager.plasma5.enable = true;

  services.printing.enable = true;

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

  nix = {
    trustedUsers = [ "root" "siraben" ];
    package = pkgs.nixFlakes;
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
  };

  services.xserver.libinput.enable = true;
  services.tailscale.enable = true;
  services.openssh.enable = true;
  programs.mosh.enable = true;
  environment.systemPackages = with pkgs; [ bpftrace ];

  environment.pathsToLink = [ "/share/zsh" ];
  environment.shells = with pkgs; [ bashInteractive zsh ];

  users = {
    users.siraben = {
      shell = pkgs.zsh;
      useDefaultShell = false;
      isNormalUser = true;
      home = "/home/siraben";
      description = "Ben Siraphob";
      extraGroups = [ "wheel" "networkmanager" "dialout" ];
    };
  };

  system.stateVersion = "21.11";

}