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

let
  flake-compat = builtins.fetchTarball "https://github.com/edolstra/flake-compat/archive/master.tar.gz";

  hyprland = (import flake-compat {
    src = builtins.fetchTarball "https://github.com/hyprwm/Hyprland/archive/master.tar.gz";
  }).defaultNix;
in {  
  nix.settings = {
    substituters = [ "https://hyprland.cachix.org" ];
    trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
  };

  imports =
    [ hyprland.nixosModules.default ];
  
  nixpkgs.overlays = [
    (self: super: {
      system76-scheduler = pkgs.callPackage ./syspkgs/system76-scheduler.nix {};
      kwin-system76-scheduler-integration = pkgs.libsForQt5.callPackage ./syspkgs/kwin-system76-scheduler-integration.nix {};
    })
  ];


  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
  boot.initrd.kernelModules = [ "dm-snapshot" ];
  boot.kernelModules = [ "kvm-intel" ];
  boot.extraModulePackages = [ ];

  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/1C5C-8FF4";
      fsType = "vfat";
    };

  swapDevices = [ ];

  networking.useDHCP = lib.mkDefault true;
  boot.loader.systemd-boot.configurationLimit = 2;

  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  networking.hostName = "adrift"; # Define your hostname.
  services.xserver.videoDrivers = [ "i915" ];

  services.power-profiles-daemon.enable = false;
  services.tlp.enable = true;

  users.users.plank = {
    isNormalUser = true;
    extraGroups = [ "wheel" ];
  };

  fileSystems."/" = {
    device = "/dev/mapper/nix-os";
    fsType = "ext4";
  };

  fileSystems."/home" = {
    device = "/dev/mapper/nix-home";
    fsType = "ext4";
  };

  environment.systemPackages = with pkgs; 
    [
      wl-clipboard
      wl-clipboard-x11
      xclip
      system76-scheduler
      kwin-system76-scheduler-integration
    ];

  programs.hyprland = {
    enable = true;
    xwayland = {
      enable = true;
      hidpi = false;
    };
    nvidiaPatches = true;
  };
  programs.xwayland.enable = true;

  systemd.services."com.system76.Scheduler" = {
    wantedBy = [ "multi-user.target" ];
    description = "the system76 process scheduler";
    serviceConfig = {
      Type = "dbus";
      ExecStart = ''${pkgs.system76-scheduler}/bin/system76-scheduler daemon'';
      ExecReload = ''${pkgs.system76-scheduler}/bin/system76-scheduler daemon reload'';
      BusName = "com.system76.Scheduler";
    };
  };

  services.dbus.packages = [
    pkgs.kwin-system76-scheduler-integration
    pkgs.system76-scheduler
  ];

  systemd.packages = [
    pkgs.kwin-system76-scheduler-integration
    pkgs.system76-scheduler
  ];

  environment.etc = {
    "system76-scheduler".source = "${pkgs.system76-scheduler}/etc/system76-scheduler";
  };

  xdg.portal = {
    enable = true;
    wlr = {
      enable = true;
    };
    extraPortals = with pkgs; [
      xdg-desktop-portal-kde
      xdg-desktop-portal-gtk
    ];
  };

 }