{ config, lib, pkgs, ... }:


let
  fsOptions = [ "noatime" "ssd" "space_cache" "compress=zstd" ];
in
{
  imports =
    [
      <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
      (
        builtins.fetchGit {
          url = "https://github.com/NixOS/nixos-hardware";
          rev = "d38958a6aa5bdbf3239f26a04689f3d9ae7da0c0";
        } + "/lenovo/thinkpad/t440s"
      )
    ];

  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
  boot.kernelModules = [ "kvm-intel" ];
  boot.extraModulePackages = [];

  # encrypted partitions
  boot.initrd.luks =
    {
      devices =
        # allow discards on all devices
        builtins.mapAttrs (name: val: val // {allowDiscards = true;})
        {
          "system".device = "/dev/disk/by-uuid/85154131-b2a8-4ef5-9d74-47429cb267ef";
          "cryptswap".device = "/dev/disk/by-uuid/ac586df6-6332-4809-beb1-f51906a2adaa";
          "ssd2".device = "/dev/disk/by-uuid/cadd4e1f-3642-4faa-8d4e-37dd85465df1";
        };
      reusePassphrases = true;
    };

  fileSystems."/" =
    {
      device = "/dev/disk/by-uuid/cb5998ae-cfc9-447f-8756-1ceaec6ca4c4";
      fsType = "btrfs";
      options = fsOptions ++ [ "subvol=nixos_root" ];
    };

  fileSystems."/boot" =
    {
      device = "/dev/disk/by-uuid/DED9-661B";
      fsType = "vfat";
      options = [ "discard" ];
    };

  fileSystems."/home" =
    {
      device = "/dev/disk/by-uuid/cb5998ae-cfc9-447f-8756-1ceaec6ca4c4";
      fsType = "btrfs";
      options = fsOptions ++ [ "subvol=home" ];
    };

    fileSystems."/var/tmp" =
      {
        device = "/dev/disk/by-uuid/cd6b8f25-c029-49a6-b326-656faec3ce15";
        fsType = "btrfs";
        options = fsOptions ++ [ "subvol=vartmp" ];
      };

    fileSystems."/var/log" =
      {
        device = "/dev/disk/by-uuid/cd6b8f25-c029-49a6-b326-656faec3ce15";
        fsType = "btrfs";
        options = fsOptions ++ [ "subvol=varlog" ];
      };

    fileSystems."/var/cache" =
      {
        device = "/dev/disk/by-uuid/cd6b8f25-c029-49a6-b326-656faec3ce15";
        fsType = "btrfs";
        options = fsOptions ++ [ "subvol=varcache" ];
      };

    boot.tmpOnTmpfs = true;
    fileSystems."/tmp".fsType = "tmpfs";

  swapDevices =
    [
      { device = "/dev/disk/by-uuid/bf928178-4e92-4e7e-8df2-18fbd658eecf"; }
    ];

  nix.maxJobs = lib.mkDefault 4;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  hardware.trackpoint = {
    enable = true;
    sensitivity = 180;
    speed = 180;
  };


  # modesetting is always better than intel (legacy)
  services.xserver.videoDrivers = [ "modesetting" ];

}