net-fs/netatalk-3.1.10 has automagic dependency on dev-db/mysql
Confirmed (though it seems to like mariadb too) - this is from 3.1.10: X86_64;/usr/lib64/libatalk.so.18.0.0;libatalk.so.18;;libldap-2.4.so.2,libtdb.so.1,libmariadb.so.3,libpthread.so.0,libwrap.so.0,libacl.so.1,libattr.so.1,libc.so.6;x86_64
also (from 3.1.11 this time): checking MySQL library and headers... checking for mysql_config... /usr/bin/mysql_config /usr/bin/mysql_config