What is “portmidi” Package?

Cross-platform library for real-time MIDI I/O
For more details: https://sourceforge.net/projects/portmedia/

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 portmidi.

  brew install portmidi

Now, use portmidi!