progress in multi user config

modules/home/desktop/applications/recording.nix

@@ -0,0 +1,36 @@
+{ options, config, lib, pkgs, user, ... }:
+let
+  inherit (lib.modules) mkIf mkForce mkMerge;
+  inherit (lib.attrsets) attrValues;
+
+  cfg = config.modules.${user}.desktop.applications.recording;
+in
+{
+  options.modules.${user}.desktop.applications.recording = let
+    inherit (lib.options) mkEnableOption;
+  in {
+    enable = mkEnableOption "Enable recording software (OBS Studio)";
+  };
+
+  config = mkIf cfg.enable
+  {
+    boot = {
+      extraModulePackages = with config.boot.kernelPackages; [
+        v4l2loopback
+      ];
+
+      extraModprobeConfig = ''
+        options v4l2loopback devices=1 video_nr=1 card_label="OBS Cam" exclusive_caps=1
+      '';
+    };
+
+    security.polkit.enable = true;
+
+    user.packages = with pkgs; [
+      obs-studio
+      obs-studio-plugins.wlrobs
+      obs-studio-plugins.obs-backgroundremoval
+      obs-studio-plugins.obs-pipewire-audio-capture
+    ];
+  };
+}