At some point there was "the keyboard extension" which was somewhat vim like (kinda). It was too overpowered and you literally could not flag someone who was us

At some point there was "the keyboard extension" which was somewhat vim like (kinda). It was too overpowered and you literally could not flag someone who was using it in ultra or hyperbullet, so lichess finally banned it: https://lichess.org/page/play-extensions https://lichess.org/page/play-extensions. Vim bindings were too overpowered for chess :D