Marnen's application bundle is available on his web site: https://bintray.com/marnen/lilypond-darwin-64
Because Marnen's build is MacOS native, rather than GUB, I assume that his build recipe will build ARM apps as well. But it will likely need to be run on an ARM-based system. Marnen has made his build code available: https://gitlab.com/marnen/lilypond-mac-builder Carl
