The font is a custom build of Iosevka, which is almost certainly inspired by the commercial font Pragmata Pro (https://fsd.it/shop/fonts/pragmatapro/). When Pragmata Pro was first released a little over 10 years ago, it sold for around $400 (I know this because I and many, many others bought a copy back then). As another commenter points out, you may have some rendering issue. Alternatively, you may just not like... - Source: Hacker News / 3 months ago

In part 1[0] of this series of posts, the author mentions they use Pragmata Pro [1]. [0]: https://arne.me/articles/emacs-from-scratch-part-one-foundations [1]: https://fsd.it/shop/fonts/pragmatapro/. - Source: Hacker News / 6 months ago

My absolute favorite is PragmataPro, it’s a condensed font. This allows you to fit more information horizontally, which super nice for small screen sizes, or vertical splits without making the font size small. Source: 6 months ago

Not OP, but I like PragmataPro [0] by Fabrizio Schiavi and use it in my IDEs. I particularly appreciate his attention to glyphs in languages other than English. [0] https://fsd.it/shop/fonts/pragmatapro/. - Source: Hacker News / 10 months ago

[PragmataPro](https://fsd.it/shop/fonts/pragmatapro/) is a monospaced masterpiece all on its own, but with PragmataPro Fraktur, designer Fabrizio Schiavi is flexing where no one has ever flexed before. - Source: Hacker News / 12 months ago

Prowebtype Https://prowebtype.com/ If you have time and want a more in-depth read, Prowebtype is a great resource that gets into the thorny technical details (with CSS snippets). It also has a chapter on variable fonts. Source: over 2 years ago

Professional Web Typography might be of use. Source: almost 3 years ago