Just today my new config for Emacs refused to build libgit. I could see the CMake error, but rather than figuring out how to fix it I just commented out that part of my config (resulting in slightly more overhead in magic). Even with many years of serious software development, I really don't like debugging build problems.

I used to use Fink and MacPorts for MacOS package management, but brew was so easy to use that it won me over.