my-default.cnf is no longer included in or installed by distribution packages

[leymannx]

Note
As of MySQL 5.7.18, my-default.cnf is no longer included in or installed by distribution packages.

Source: https://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html

So cp -v $(brew --prefix mysql)/support-files/my-default.cnf $(brew --prefix)/etc/my.cnf in mysql.sh won't work anymore.

I don't know if it's this or something else. Even with an old restored my.cnf the setup doesn't seem to work anymore on a fresh Sierra MBA.

[leymannx]

More likely it's the outdated Apache 2.2. The following tutorial integrating Apache 2.4 is working:

https://getgrav.org/blog/macos-sierra-apache-multiple-php-versions