{ prev, final, sources, ... }: {
  yt-dlp = prev.yt-dlp.overrideAttrs (oldAttrs: {
    inherit (sources.yt-dlp) pname version src;
  });
  python3 = prev.python3.override {
    packageOverrides = python-self: python-super: {
      yt-dlp-ejs = python-super.yt-dlp-ejs.overridePythonAttrs (oldAttrs: {
        inherit (sources.yt-dlp-ejs) pname version src;
      });
    };
  };
  python3Packages = final.python3.pkgs;
}