For fun I tried to execute
https://bintray.com/marnen/lilypond-darwin-64/lilypond-2.19.83/2.19.83.build20200207173449 on my old MacOS Lion box, with the following error. Traceback (most recent call last): File ".../LilyPond 2.app/Contents/Resources/__boot__.py", line 98, in <module> _run() File ".../LilyPond 2.app/Contents/Resources/__boot__.py", line 82, in _run exec(compile(source, path, 'exec'), globals(), globals()) File ".../LilyPond 2.app/Contents/Resources/LilyPond.py", line 3, in <module> from PyObjCTools import AppHelper File "PyObjCTools/AppHelper.pyc", line 14, in <module> File "AppKit/__init__.pyc", line 8, in <module> File "objc/__init__.pyc", line 18, in <module> File "objc/__init__.pyc", line 15, in _update File "objc/_objc.pyc", line 14, in <module> File "objc/_objc.pyc", line 10, in __load ImportError: dlopen(.../LilyPond 2.app/Contents/Resources/lib/python2.7/lib-dynload/ob jc/_objc.so, 2): Symbol not found: _OBJC_CLASS_$_NSObject Referenced from: .../LilyPond 2.app/Contents/Resources/lib/python2.7/lib-dynload/obj c/_objc.so Expected in: /usr/lib/libobjc.A.dylib in .../LilyPond 2.app/Contents/Resources/lib/python2.7/lib-dynload/objc/_objc.so LilyPond Error Not sure whether this platform is supported at all... If not it would be nice if a sensible error message could be emitted instead of this error. Werner
