Completely agree. There is a tradeoff between letting user do everything themselves such that they know exactly what's happening in their system vs just doing it for them and making sure they don't make a mistake.

Perhaps a better implementation would be a choice:

    You need too add  `eval "$(/bin/brew shellenv)"` to your dotfiles. Would you like us to do this for you?

    1. Yes
    2. No I will do this myself