I do this as well! I have this repo [0] at ~/cfg, then I symlink what I need [1] as an init script. My end goal is to be able to run a single script and get everything [2] set up on a new machine (I change machines somewhat frequently and I got the manual process to under 45 minutes, so there's room for improvement). More on setting up Macs [3].

There is also GNU Stow [4] that does something similar, and probably better.

0: https://github.com/andreis/cfg

1: https://github.com/andreis/cfg/blob/master/init.sh#L64-L69

2: brew and brew cask, dotfiles ofc, and a _lot_ of system settings on mac os can be changed via the CLI, see

3: https://github.com/iCHAIT/awesome-macOS#setup

4: http://brandon.invergo.net/news/2012-05-26-using-gnu-stow-to...