{ pkgs, lib, inputs, ... }:

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

  # use flakes
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  # configure bootloader
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  
  # plymouth boot eye candy
  boot.initrd.systemd.enable = true;
  boot.kernelParams = [ "quiet" "loglevel=2" ];
  boot.plymouth.enable = true;
  boot.plymouth.theme = "spinner";
 
  # use latest kernel
  boot.kernelPackages = pkgs.linuxPackages_latest;

  # networking
  networking.hostName = "neon"; 
  networking.networkmanager.enable = true;

  # bluetooth
  hardware.bluetooth.enable = true;

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

  # select internationalisation properties
  i18n.defaultLocale = "en_US.UTF-8";
  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_US.UTF-8";
    LC_IDENTIFICATION = "en_US.UTF-8";
    LC_MEASUREMENT = "en_US.UTF-8";
    LC_MONETARY = "en_US.UTF-8";
    LC_NAME = "en_US.UTF-8";
    LC_NUMERIC = "en_US.UTF-8";
    LC_PAPER = "en_US.UTF-8";
    LC_TELEPHONE = "en_US.UTF-8";
    LC_TIME = "en_US.UTF-8";
  };
  console = {
    font = "Lat2-Terminus16";
    keyMap = "de_CH-latin1";
  };

  # window manager configs
  programs.niri.enable = true;
  programs.xwayland.enable = true;
  services.displayManager.sddm = {
    enable = true;
    wayland = {
      enable = true;
    };
    autoNumlock = true;
    enableHidpi = true;
    theme = "sddm-astronaut-theme";
    settings = {
      Theme = {
        Current = "sddm-astronaut-theme";
      };
    };
    extraPackages = with pkgs; [
      sddm-astronaut
    ];
  };

  services.tuned.enable = true;
  services.upower.enable = true;

  environment.pathsToLink = [ "/libexec" ];
  environment.variables.EDITOR = "vim";

  # enable sound
  services.pipewire = {
     enable = true;
     pulse.enable = true;
  };

  # define a user account
  users.users.aaron = {
    isNormalUser = true;
    group = "users";
    extraGroups = [ "wheel" ];
    shell = pkgs.zsh;
  };

  # browser
  programs.firefox.enable = true;

  # zsh config
  programs.zsh = {
    enable = true;
    enableCompletion = true;
    autosuggestions.enable = true;
    ohMyZsh = {
      enable = true;
      plugins = [ "git" "sudo" ];
      theme = "gentoo";
    };
  };

  # system packages
  environment.systemPackages = with pkgs; [
    alacritty
    btop
    cowsay
    dnsutils
    efibootmgr
    ethtool
    file
    ghostty
    git
    gnupg
    iftop
    imagemagick
    imv
    iotop
    iperf3
    jq
    kdePackages.qtmultimedia
    kitty
    ldns
    lm_sensors
    lsof
    ltrace
    mtr
    neovim
    nh
    nix-output-monitor
    nmap
    nvd
    p7zip
    pciutils
    sddm-astronaut
    socat
    strace
    sysstat
    tree
    unzip
    usbutils
    vim
    wget
    which
    xwayland
    xwayland-satellite
    xz
    zip
    zstd
  ];

  # Some programs need SUID wrappers
  programs.mtr.enable = true;
  programs.gnupg.agent = {
     enable = true;
     enableSSHSupport = true;
  };

  # enable steam on this machine
  nixpkgs.config.allowUnfree = true;
  programs.steam = {
    enable = true;
    remotePlay.openFirewall = true;
    dedicatedServer.openFirewall = true;
    localNetworkGameTransfers.openFirewall = true;
  };

  # fix black screen in steam on intel gpu
  programs.steam.package = pkgs.steam.override {
    extraArgs = "-system-composer";
  };

  # enable the OpenSSH daemon
  services.openssh = {
    enable = true;
    openFirewall = true;
  };

  # firewall configs
  networking.firewall.allowedTCPPorts = [ ];
  networking.firewall.allowedUDPPorts = [ ];

  # enable home-manager globally
  home-manager.useGlobalPkgs = true;
  home-manager.useUserPackages = true;
  home-manager.backupFileExtension = "backup";

  # add flake env variable for nh
  environment.sessionVariables = {
    NH_FLAKE = "/home/aaron/git/nixconfig";
  };

  # install state version
  system.stateVersion = "25.11"; # Don't change
}