Fira VS caskaydia-cove

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.

Cascadia Code with ligatures and nerd fonts.

Over 10 years I've used Inconsolata, moved to FiraCode, and then switched to Cascadia which is the best thing Microsoft has ever made.

It’s a font that supports ligatures. I use cascadia: https://github.com/microsoft/cascadia-code

Cascadia Mono is what you want. Or you can turn off ligatures for Cascadia Code in your terminal/IDE or set them to off in the text style (depending on whether you’re using it for coding or typesetting).

Firstly, if you don't have a Nerd Font, you can install Cascadia Code.

Cascadia Mono/Code, depending if I feel like having ligatures:

https://github.com/microsoft/cascadia-code

It has the option to enable cursive italics, which is disabled by default. Been using it for over a year. No complaints.

I prefer Cascadia Code

The theme relies on the Cascadia Code font. In my case, I just extracted the CascadiaCode.ttf file in my Download directory, I’m not sure if it will work out of the box for people trying to use the theme.