I packaged the invidious addon: kodi.packages.invidious: init at 0.1.0+matrix.1 by aanderse · Pull Request #180014 · NixOS/nixpkgs · GitHub
If you’re on unstable it should land in the binary caches at some point soon. If you’re on stable it should be fine to backport that leaf package to stable. Let me know if you want me to do that.