firefox: add youtube-unhook and enable pipewire

nix/home-manager/programs/firefox.nix

@@ -8,7 +8,7 @@
 let
   # Search extension names with below command:
   # nix flake show --json "gitlab:rycee/nur-expressions?dir=pkgs/firefox-addons" --all-systems | jq -r '.packages."x86_64-linux" | keys[]' | rg QUERY
-  ryceeAddons = with repoFlake.inputs.nur.legacyPackages.${pkgs.system}.repos.rycee.firefox-addons; [
+  ryceeAddons = with pkgs.nur.repos.rycee.firefox-addons; [
     ublock-origin
 
     # bypass-paywalls-clean (can't use, was creating popups)
@@ -27,6 +27,8 @@ let
     vimium
     cookie-autodelete
     auto-tab-discard
+
+    youtube-recommended-videos
   ];
 
   customAddons = [
@@ -163,7 +165,8 @@ let
         "browser.translations.neverTranslateLanguages" = ["en" "de"];
         "browser.translations.automaticallyPopup" = false;
 
-
+        # enable pipewire (and libcamera) sources
+        "media.webrtc.camera.allow-pipewire" = true;
       };
 
       userChrome =
@@ -296,6 +299,14 @@ let
 
 in
 {
+  nixpkgs.overlays = [
+      repoFlake.inputs.nur.overlay
+  ];
+
+  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+    "youtube-recommended-videos"
+  ];
+
   programs.librewolf = {
     enable = false;
   };