Ligaturizer VS Fira

You can add the Fira ligatures to any font with [Ligaturizer][1]. Personally I use CMU Typewriter + the Fira ligatures.

[1]: https://github.com/ToxicFrog/Ligaturizer

If only there was a way to only use some ligatures but not others! cough https://github.com/ToxicFrog/Ligaturizer cough

You can also use Ligaturzier to add ligatures to fonts that don't have them. My goto is consolas + ligatures.

Those are known as ligatures. Ligatuerizer[0], which copies Fira Code’s ligatures into any font, may be of interest.

https://github.com/ToxicFrog/Ligaturizer

One can copy ligatures between fonts: https://github.com/ToxicFrog/Ligaturizer

That would remove my primary objection to Input. Seeing a broken arrow -> is ground glass in my eye; other font subtleties are a sign to me I'm losing focus.

you can get ligatures here for plex mono, my fav https://github.com/ToxicFrog/Ligaturizer

The font is a ligaturized font and its name is Ligalex Mono. You can find it here.

I've been using Fira Sans.

Fira Sans Medium: https://github.com/mozilla/fira

Fira Sans/Code/Mono (F) [OFL]

if you still want to use a font that looks like Fira Code, you can try Fira Mono instead of Fira Code. I think Fira Code is based off of Fira Mono to begin with

An example is Fira Mono.

Have a look at Fira. It has a hairline weight that is really thin.

Fira Sans. I set my entire system font to Fira Sans because I like this font.