I’ve probably written about this before but this tweet suggests that not all Mac Emacs users are aware of it:
I have been using #emacs on OSX for the last 10yrs, but never stumbled upon exec-path-from-shell before. Wow! https://t.co/CxIOfhR0dh
— Robert Hilbrich (@RobertHilbrich) December 18, 2017
The exec-path-from-shell package is a must-have for the OS X Emacs user. Before I found it, I could never get the search path for Emacs configured correctly. Once I installed it, all those problems disappeared and I haven’t thought about them since. Really; if you’re using Emacs on a Mac, you need this.