static File installYouTubeDL() {
  File file = prepareProgramFile(#1006747, isWindows() ? "youtube-dl.exe" : "youtube-dl");
  if (!file.exists()) {
    S url = isWindows()
      ? "https://yt-dl.org/latest/youtube-dl.exe"
      : "https://yt-dl.org/downloads/latest/youtube-dl";
    saveBinaryFile(file, loadBinaryPage(url));
  }
  ret file;
}