http://gothub.nowhevi57f4lxxd6db43miewcsgtovakbh6v5f52ci7csc2yjzy5rnid.onion/tonsky/FiraCode/wiki/How-to-enable-stylistic-sets
It for example does not support <$ <$> $> from ss04 .
Besides that, it makes the Font version 1.000 and also removes all other metadata like copyright, licence and so on. The best option is the build of this project itself. It needs some setup like installing Python and some
modules, or having a Docker daemon running, or using GitHub Actions for it, and it needs much longer than
the previous options.