Hi Michael,
Mac OS X 10.4–10.14, Intel x86 CPU, 32 bit
I’m currently using a late-2012 27” iMac with macOS Catalina 10.15.7, but this can’t be upgraded to macOS Big Sur, and a recent whiff of overheated circuit-board when I leant over the back of my monitor prompted me to order a replacement which is due to arrive today. I want to make an orderly transition of all my applications and data to the new computer, but would be happy to try a quick installation of lilypond on a virgin machine running MacOS 11 if that would help you.
Only installers for the x86 32-bit MacOS versions 10.4 to 10.14 are produced using GUB. Users of those versions of MacOS can help with a test. It's clear that MacOS 11 is not within that range. Neither MacOS "Catalina" nor "Big Sur" are supported by the linked installation archive. Knut
