yt-dlp: Add deno javascript runtime by default

This is now required for full YouTube extraction support. The upstream
project recommends deno as JavaScript runtime for its complete sandbox
support.
See https://github.com/yt-dlp/yt-dlp/wiki/EJS for more info.

Also disable the new javascript support in yt-dlp-light.

pkgs/by-name/yt/yt-dlp/package.nix

@@ -4,11 +4,13 @@
   fetchFromGitHub,
   ffmpeg-headless,
   rtmpdump,
+  deno,
   atomicparsley,
   pandoc,
   installShellFiles,
   atomicparsleySupport ? true,
   ffmpegSupport ? true,
+  javascriptSupport ? true,
   rtmpSupport ? true,
   withAlias ? false, # Provides bin/youtube-dl for backcompat
   nix-update-script,
@@ -80,14 +82,15 @@ python3Packages.buildPythonApplication rec {
 
   # Ensure these utilities are available in $PATH:
   # - ffmpeg: post-processing & transcoding support
+  # - deno: required for full YouTube support (since 2025.11.12)
   # - rtmpdump: download files over RTMP
   # - atomicparsley: embedding thumbnails
   makeWrapperArgs =
     let
       packagesToBinPath =
-        [ ]
-        ++ lib.optional atomicparsleySupport atomicparsley
+        lib.optional atomicparsleySupport atomicparsley
         ++ lib.optional ffmpegSupport ffmpeg-headless
+        ++ lib.optional javascriptSupport deno
         ++ lib.optional rtmpSupport rtmpdump;
     in
     lib.optionals (packagesToBinPath != [ ]) [

pkgs/top-level/all-packages.nix

@@ -12763,6 +12763,7 @@ with pkgs;
   yt-dlp-light = yt-dlp.override {
     atomicparsleySupport = false;
     ffmpegSupport = false;
+    javascriptSupport = false;
     rtmpSupport = false;
   };