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/media.nix
    ../common/optional/nfs-mounts/homeshare.nix
    ../common/optional/nfs-mounts/photos.nix
    ../common/optional/printing.nix
    ../common/optional/backlight.nix
    ../common/optional/xmodmap-arrow-remaps.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;
    };
  };

  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;
}