add tools for webcam based streaming

roles/desktop.nix

@@ -20,9 +20,23 @@ in {
       swayidle
       swaylock
       xwayland
+      wf-recorder
     ];
   };
 
+  services.pipewire.enable = true;
+  xdg.portal = {
+    enable = true;
+    gtkUsePortal = true;
+    extraPortals = with unstable; [
+      xdg-desktop-portal-gtk
+      xdg-desktop-portal-wlr
+    ];
+  };
+  boot.extraModulePackages = with config.boot.kernelPackages; [
+    v4l2loopback
+  ];
+
   environment = {
     etc = {
       "sway/config".source = ../dotfiles/sway/config;