{
  inputs,
  lib,
  config,
  pkgs,
  system,
  host,
  ...
}:
{
  imports = [
    ./1password.nix
    ./audio.nix
    ./bluetooth.nix
    ./displaymanager.nix
    ./keyd.nix
    ./gnupg.nix
    ./nix.nix
    ./sops.nix
  ];

  options.custom = with lib; {
    shell = {
      packages = mkOption {
        type =
          with types;
          attrsOf (oneOf [
            str
            attrs
            package
          ]);
        apply = custom.mkShellPackages;
        default = { };
        description = ''
          Attrset of shell packages to install and add to pkgs.custom overlay (for compatibility across multiple shells).
          Both string and attr values will be passed as arguments to writeShellApplicationCompletions
        '';
        example = ''
          shell.packages = {
            myPackage1 = "echo 'Hello, World!'";
            myPackage2 = {
              runtimeInputs = [ pkgs.hello ];
              text = "hello --greeting 'Hi'";
            };
          }
        '';
      };
    };
    symlinks = mkOption {
      type = types.attrsOf types.str;
      default = { };
      description = "Symlinks to create in the format { dest = src;}";
    };
  };

  config = {
    boot.loader.systemd-boot.configurationLimit = 10;

    # networking
    networking.hostName = host;
    networking.hostId = builtins.substring 0 8 (builtins.hashString "md5" config.networking.hostName);
    networking.networkmanager.enable = true;

    programs.dconf.enable = true;

    services.libinput = {
      enable = true;
      touchpad = {
        disableWhileTyping = true;
        naturalScrolling = true;
      };
    };

    security.rtkit.enable = true;
    security.polkit.enable = true;

    services.openssh = {
      enable = true;
      settings = {
        # Opinionated: forbid root login through SSH.
        PermitRootLogin = "no";
        # Opinionated: use keys only.
        # Remove if you want to SSH using passwords
        PasswordAuthentication = false;
      };
    };

    environment.systemPackages =
      with pkgs;
      [
        vim
        htop
      ]
      ++ (lib.attrValues config.custom.shell.packages);

    system.stateVersion = "25.05";
  };
}