nixos/droidcam: init (#109267)

Co-authored-by: Pascal Bach <pascal.bach@nextrem.ch>

nixos/modules/module-list.nix

@@ -126,6 +126,7 @@
   ./programs/dconf.nix
   ./programs/digitalbitbox/default.nix
   ./programs/dmrconfig.nix
+  ./programs/droidcam.nix
   ./programs/environment.nix
   ./programs/evince.nix
   ./programs/file-roller.nix

nixos/modules/programs/droidcam.nix

@@ -0,0 +1,16 @@
+{ lib, pkgs, config, ... }:
+
+with lib;
+
+{
+  options.programs.droidcam = {
+    enable = mkEnableOption "DroidCam client";
+  };
+
+  config = lib.mkIf config.programs.droidcam.enable {
+    environment.systemPackages = [ pkgs.droidcam ];
+
+    boot.extraModulePackages = [ config.boot.kernelPackages.v4l2loopback ];
+    boot.kernelModules = [ "v4l2loopback" "snd-aloop" ];
+  };
+}