In my case, I only wanted to tweak the OS X settings part of my global. I plan to use the font for a little while to see how I like it so I wanted to tweak the default font setting to use the Hack 2.0 font as the default font. The easiest way I found was to run M-x ns-popup-font-panel to bring up the OS X font picker, select the freshly installed Hack 2.0 font and then run M-x describe-font to pick out the correct name. With the font installed, I needed to find out what Emacs believes the name of the font to be.

Just click “Install Font” and you’re done. This brings up the Font Book application. Installing a new font in OS X is easy - unzip the downloaded file, then double-click on each ttf file that you just unzipped. To install the font on my Mac, I downloaded the TTF version of the font from the link above.

I started with installing it on Mac OS X as that’s the OS I use most for work and work - like activities. So of course I had to try it out in Emacs. The Hack 2.0 font got a lot of attention recently as a font specifically designed for use with source code.