{ pkgs, ... }@inputs:
{
  imports = [
    ./applications.nix
    ./audio.nix
    ./bluetooth.nix
    ./bsprak.nix
    ./keyd.nix
    ./network.nix
    ./nvidia.nix
    ./power.nix
    ./printing.nix
    ./profiling.nix
    ./security.nix
    ./shell.nix
    ./virtualisation.nix
  ];

  nix = {
    settings = {
      experimental-features = [
        "nix-command"
        "flakes"
      ];
      auto-optimise-store = true;
    };
  };

  nixpkgs = {
    overlays = [
      (self: super: {
        unstable = import inputs.nixpkgs-unstable {
          system = super.system;
          config = {
            allowUnfree = true;
            allowUnfreePredicate = (_: true);
          };
        };
        mfcl3750cdwlpr = (super.callPackage ../../overlays/mfcl3750cdw.nix { }).driver;
        mfcl3750cdwcupswrapper = (super.callPackage ../../overlays/mfcl3750cdw.nix { }).cupswrapper;
        pppdf = (super.python3Packages.callPackage ../../overlays/pppdf { });
        iglesia-light = (super.callPackage ../../overlays/fonts/iglesia-light.nix { });
      })
    ];
    config = {
      allowUnfree = true;
      allowUnfreePredicate = (_: true);
    };
  };

  # provide libraries for non-nix binaries
  # programs.nix-ld = {
  #   enable = true;
  #   libraries = [
  #     # glibc
  #     # libcxx
  #     # libllvm
  #     # ncurses
  #   ];
  # };

  system.stateVersion = "23.05";

  time.timeZone = "Europe/Berlin";

  i18n = {
    defaultLocale = "en_US.UTF-8";
    supportedLocales = [
      "en_US.UTF-8/UTF-8"
      "de_DE.UTF-8/UTF-8"
    ];
  };

  console = {
    font = "Lat2-Terminus16";
    keyMap = "us";
  };

  programs.dconf.enable = true;
  services.dbus = {
    enable = true;
    packages = with pkgs; [
      gcr # gnome crypto services (daemon and tools)
      dconf
    ];
  };

  programs.ccache = {
    enable = true;
  };

  services.openssh = {
    enable = true;
    openFirewall = true;
  };
}