{ config, pkgs, ... }:
{

  # [HARDWARE]
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };
  hardware.bluetooth.enable = true;
  services.logind = {
    lidSwitch = "hibernate";
    lidSwitchDocked = "ignore";
    lidSwitchExternalPower = "hibernate";
  };
  services.tlp = {
    enable = true;
    settings = {
      TLP_DEFAULT_MODE = "BAT";
      DISK_IDLE_SECS_ON_AC = 0;
      DISK_IDLE_SECS_ON_BAT = 5;
      MAX_LOST_WORK_SECS_ON_AC = 15;
      MAX_LOST_WORK_SECS_ON_BAT = 120;
      CPU_SCALING_GOVERNOR_ON_AC = "performance";
      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
      CPU_SCALING_MIN_FREQ_ON_AC = 400000;
      CPU_SCALING_MAX_FREQ_ON_AC = 4700000;
      CPU_SCALING_MIN_FREQ_ON_BAT = 400000;
      CPU_SCALING_MAX_FREQ_ON_BAT = 2700000;
      CPU_ENERGY_PERF_POLICY_ON_AC = "balance_performance";
      CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
      CPU_MIN_PERF_ON_AC = 0;
      CPU_MAX_PERF_ON_AC = 100;
      CPU_MIN_PERF_ON_BAT = 0;
      CPU_MAX_PERF_ON_BAT = 30;
      CPU_BOOST_ON_AC = 1;
      CPU_BOOST_ON_BAT = 0;
      SCHED_POWERSAVE_ON_AC = 0;
      SCHED_POWERSAVE_ON_BAT = 1;
      NMI_WATCHDOG = 0;
      DISK_DEVICES = "nvme0n1";
    };
  };
  services.power-profiles-daemon.enable = false;

  # [BOOT / DISK ENCRYPTION]
  boot.loader.efi.canTouchEfiVariables = true;
  boot.loader.grub = {
    enable = true;
    device = "nodev";
    efiSupport = true;
    enableCryptodisk = true;
    theme = "/etc/grub-themes/sayonara";
  };
  environment.etc = {
    "grub-themes/sayonara".source = ../shared/sayonara;
  };

  boot.loader.efi.efiSysMountPoint = "/boot/efi";
  boot.initrd = {
    availableKernelModules = [ "aesni_intel" "cryptd" ];
    secrets = { "/boot/key" = "/boot/key"; };
    luks.mitigateDMAAttacks = true;
    luks.devices = {
      root = {
        device = "/dev/disk/by-uuid/91114176-b6cc-4454-89df-e2bf5c1fac0a";
        keyFile = "/boot/key";
        preLVM = true;
      };
    };
  };

  # [NETWORKING]
  networking.hostName = "lambda";
  networking.networkmanager = {
    enable = true;
    wifi.powersave = true;
    wifi.scanRandMacAddress = true;
    wifi.macAddress = "random";
  };
  # Xenia's router sucks
  networking.resolvconf.enable = true;
  networking.nameservers = [ "8.8.8.8" ];
  networking.resolvconf.dnsExtensionMechanism = false;

  # [NFS]
  fileSystems."/home/rachel/music" = {
    device = "rachel.cafe:/srv/music";
    fsType = "nfs";
    options = [ "x-systemd.automount" "noauto" "x-systemd.idle-timeout=60" ];
  };

  # [LOCALE]
  time.timeZone = "Europe/Stockholm";
  i18n.defaultLocale = "en_GB.UTF-8";
  i18n.supportedLocales = [ "sv_SE.UTF-8/UTF-8" "en_GB.UTF-8/UTF-8" ] ;
  console = {
    font = "LatGrkCyr-12x22";
    keyMap = "us";
  };

  # [NIX]
  nix = {
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      auto-optimise-store = true;
    };
    gc = {
      automatic = true;
      dates = "monthly";
      options = "--delete-older-than 30d";
    };
  };

  nixpkgs.config.allowUnfree = true;

  # [DESKTOP / XORG / WAYLAND]
  services.xserver = {
    enable = true;
    desktopManager.plasma5.enable = true;
    displayManager.startx.enable = true;
    layout = "us,se";
    xkbOptions = "grp:alt_caps_toggle";
    libinput = {
      enable = true;
      touchpad = {
        naturalScrolling = true;
        accelProfile = "flat" ;
        tapping = false;
      };
    };
  };

  # [SOUND]
  sound.enable = false;
  services.pipewire = {
    enable = true;

    alsa = {
      enable = true;
      support32Bit = true;
    };

    pulse.enable = true;

    wireplumber.enable = true;
  };


  # [PACKAGES]
  environment.systemPackages = with pkgs; [
    git
    neovim
  ];

  # [SERVICES]
  services.printing.enable = true;

  # [SECURITY / FIREWALL]
  networking.firewall.enable = true;
  networking.firewall.allowedTCPPorts = [ ];
  networking.firewall.allowedUDPPorts = [ ];
  programs.gnupg.agent = {
    enable = true;
    pinentryFlavor = "qt";
  };
  security.doas = {
    enable = true;
    extraRules = [{
      runAs = "root";
      groups = [ "wheel" ];
      noPass = false;
      keepEnv = true;
    }];
  };

  # [USER / HOME MANAGER]
  users.users.rachel = {
    isNormalUser = true;
    extraGroups = [
      "wheel"
      "networkmanager"
      "video"
      "input"
      "audio"
    ];
  };

  # 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 = "23.05"; # Did you read the comment?

}