I am pleased to announce that Lilypond has just been added to the Homebrew package manager.
From now on, 64-bit macOS users (Intel or M1 processors) can install the latest stable version of Lilypond with the command:
brew install lilypond
This is a command-line version, similar to what exists in Linux, so it doesn't have the graphical IDE as in the official version which only works on 32 bits (macOS Mojave or lower).
The Homebrew version will probably not be officially supported by the Lilypond team as it uses Guile 2, but it is a simple and elegant new way to install Lilypond.
Best regards