nixos/hosts/citadel/default.nix

{ inputs, lib, pkgs, config, ... }:
let
  # Disko setup
  fsType = "btrfs"; # one of ext4 or btrfs. Use btrfs if using impermanence
  dev = "/dev/nvme0n1"; # depends on target hardware
  encrypted = true; # currrently only applies to btrfs
  btrfsMountDevice = if encrypted then "/dev/mapper/crypted" else "/dev/root_vg/root";
  user = "sam";
  impermanence = true;
in
{
  imports =
    [
      # Create users for this host
      ../common/users/${user}

      # Disk configuration
      inputs.disko.nixosModules.disko
      (import ../common/disks { device = dev; impermanence = impermanence; fsType = fsType; encrypted = encrypted; })

      # Impermanence
      (import ../common/disks/btrfs/impermanence.nix { btrfsMountDevice = btrfsMountDevice; lib = lib; })

      # Import core options
      ./hardware-configuration.nix
      ../common/core

      # Import optional options
      ../common/optional/persistence.nix
      ../common/optional/pipewire.nix
      ../common/optional/openssh.nix
      ../common/optional/dwm.nix
      ../common/optional/nfs-mounts/music.nix
      ../common/optional/printing.nix
      ../common/optional/backlight.nix

    ];

  boot = {
    blacklistedKernelModules = [ "snd_hda_intel" "snd_soc_skl" ];
    kernelModules = [ "iwlwifi" ];
    initrd.kernelModules = [ "thinkpad-acpi" "acpi-call" ];
    kernelPackages = pkgs.linuxPackagesFor pkgs.linux_latest;
    extraModulePackages = [
      config.boot.kernelPackages.acpi_call
    ];
    loader = {
      systemd-boot.enable = true;
      efi.canTouchEfiVariables = true;
      timeout = 3;
    };
  };

  services = {
    libinput.touchpad.accelSpeed = "0.5";
    xserver = {
      xkb.options = "caps:swapescape";
      dpi = 196;
      upscaleDefaultCursor = true;
    };
  };

  environment.variables = {
    GDK_SCALE = "2.2";
    GDK_DPI_SCALE = "0.8";
    _JAVA_OPTIONS = "-Dsun.java2d.uiScale=2.2";
    QT_AUTO_SCREEN_SCALE_FACTOR = "1";
    XCURSOR_SIZE = "64";
  };

  services.tlp = {
    enable = true;
    settings = {
      CPU_SCALING_GOVERNOR_ON_AC = "ondemand";
      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

      START_CHARGE_THRESH_BAT0 = 50;
      STOP_CHARGE_THRESH_BAT0 = 95;
    };
  };

  # Remap Alt_L +[hjkl] to left down up right
  services.xserver.displayManager.sessionCommands =
    "${pkgs.xorg.xmodmap}/bin/xmodmap ${pkgs.writeText  "xkb-layout" ''
      keycode 64 = Mode_switch
      keycode 43 = h H Left H
      keycode 44 = j J Down J
      keycode 45 = k K Up K
      keycode 46 = l L Right L
  ''}";

  hardware = {
    bluetooth = {
      enable = true;
      powerOnBoot = true;
    };
    enableRedistributableFirmware = true;
    firmware = [
      pkgs.sof-firmware
    ];
  };

  networking = {
    hostName = "citadel";
    networkmanager.enable = true;
    enableIPv6 = false;
    nameservers = [ "10.0.10.60" "8.8.8.8" ];
  };

  services.libinput.enable = true;
}