What is “proof-general” Package?

Emacs-based generic interface for theorem provers
For more details: https://proofgeneral.github.io

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install proof-general.

  brew install proof-general

Now, use proof-general!