Hi Huib,
the Mac aficionados that I know prefer to resort to the homebrew deployments on BaseX.
I would really like to reactivate our app.zip distribution, but I have no clue how to make this happen. You are invited to have a look at our build process [1,2]; maybe you have some idea what needs to be done?
Thanks, Christian
[1] https://github.com/BaseXdb/basex-dist/tree/master/mac [2] https://github.com/BaseXdb/basex-dist/blob/master/release.pl