usb-wwan: nixos module

nixos/modules/hardware/usb-wwan.nix

@@ -0,0 +1,26 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  ###### interface
+
+  options = {
+
+    hardware.usbWwan = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Enable this option to support USB WWAN adapters.
+        '';
+      };
+    };
+  };
+
+  ###### implementation
+
+  config = mkIf config.hardware.usbWwan.enable {
+    services.udev.packages = with pkgs; [ usb-modeswitch-data ];
+  };
+}

nixos/modules/module-list.nix

@@ -38,6 +38,7 @@
   ./hardware/network/rtl8192c.nix
   ./hardware/opengl.nix
   ./hardware/pcmcia.nix
+  ./hardware/usb-wwan.nix
   ./hardware/video/amdgpu.nix
   ./hardware/video/amdgpu-pro.nix
   ./hardware/video/ati.nix