{
  config,
  inputs,
  lib,
  pkgs,
  ...
}: {
  imports = [
    ./hardware-configuration.nix
  ];

  nixpkgs = {
    config.allowUnfree = true;
    overlays = [
      (self: super: {
        hyprland = inputs.hyprland-git.packages."x86_64-linux".hyprland;
      })
    ];
  };
  nix.settings = {
    experimental-features = [
      "nix-command"
      "flakes"
    ];
    download-buffer-size = 524288000; # 500 MiB
  };

  # Use the systemd-boot EFI boot loader.
  boot.loader = {
    systemd-boot.enable = true;
    efi.canTouchEfiVariables = true;
  };

  # Set your time zone.
  time.timeZone = "America/Chicago";
  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";
  console = {
    font = "Lat2-Terminus16";
    keyMap = "us";
  };

  networking = {
    hostName = "girlCore";
    networkmanager.enable = true;

    firewall = {
      enable = true;
      allowedTCPPorts = [];
      allowedUDPPorts = [];
    };
  };

  users.users.ashley = {
    isNormalUser = true;
    extraGroups = ["wheel"]; # Enable ‘sudo’ for the user.
    packages = with pkgs; [
      tree
    ];
  };
  home-manager = {
    useGlobalPkgs = true;
    useUserPackages = true;
    extraSpecialArgs = {inherit inputs;};

    users.ashley = import ./home.nix;
  };

  services = {
    displayManager = {
      sddm = {
        enable = true;
        wayland.enable = ! config.services.xserver.enable; # experimental
      };
      defaultSession = "hyprland";
    };

    xserver.videoDrivers = lib.mkDefault ["nvidia"];

    # Enable touchpad support (enabled default in most desktopManager).
    libinput.enable = true;

    # Enable audio
    # Multimedia Framework
    # With backwards compatability for alsa/pulseaudio/jack
    pipewire = {
      enable = true;
      wireplumber.enable = true;

      alsa.enable = true;
      alsa.support32Bit = true;

      pulse.enable = true;
      jack.enable = true;
    };
  };
  security.rtkit.enable = true; # simplifies pipewire's life

  programs = {
    hyprland = {
      enable = true;
      withUWSM = true; # Universal Wayland Session Manager
      xwayland.enable = true;
    };

    gamemode.enable = true;
    steam = {
      enable = true;
      gamescopeSession.enable = true; # .desktop entry for gamescope

      remotePlay.openFirewall = true;
      dedicatedServer.openFirewall = true;
      localNetworkGameTransfers.openFirewall = true;

      # extraCompatPackages = with pkgs; [
      #   proton-ge-bin
      # ];
    };

    silentSDDM = {
      enable = true;
      theme = "rei";
      settings = {
        "LoginScreen.LoginArea.Avatar" = {
          shape = "circle";
          active-border-color = "#ffcfce";
        };
        "LoginScreen" = {
          background = "hana.jpg";
        };
        "LockScreen" = {
          background = "kokomi96024.png";
        };
      };
    };
  };

  hardware = {
    bluetooth = {
      enable = true;
      powerOnBoot = true;
    };

    graphics = {
      enable = true;
      enable32Bit = true;
    };

    # nvidia drivers
    nvidia = {
      package = config.boot.kernelPackages.nvidiaPackages.stable;

      # using RTX 2060, so needs to be proprietary
      open = false;

      nvidiaSettings = true;
      modesetting.enable = true;
      # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
      # Enable this if you have graphical corruption issues or application crashes after waking
      # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
      # of just the bare essentials.
      powerManagement = {
        enable = false;
        finegrained = false;
      };
    };
  };

  environment = {
    # NOTE: loaded earlier than `environment.variables`
    sessionVariables = {
      # Hint Electrons apps to use Wayland
      NIXOS_OZONE_WL = "1";
    };

    variables = {
      EDITOR = "nvim";
    };

    # List packages installed in system profile.
    # You can use https://search.nixos.org/ to find more packages (and options).
    systemPackages = with pkgs; [
      git
      neovim
      wget

      steamcmd
    ];
  };

  # This option defines the first version of NixOS you have installed on this particular machine,
  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
  #
  # Most users should NEVER change this value after the initial install, for any reason,
  # even if you've upgraded your system to a new NixOS release.
  #
  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
  # to actually do that.
  #
  # This value being lower than the current NixOS release does NOT mean your system is
  # out of date, out of support, or vulnerable.
  #
  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
  # and migrated your data accordingly.
  #
  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
  system.stateVersion = "25.11"; # Did you read the comment?
}