Comment 4 for bug 587850

Apart from libdbd-mysql-perl, another important thing to check is that libmyodbc works correctly. We had a bug where it did not work with MariaDB client library, as it uses internal stuff (the actual culprit was fastmutexes calls).

A full list of packages that depend on libmysqlclient can be obtained from

    apt-cache rdepends libmysqlclient15off

The mysql-common package contains /etc/mysql/my.cnf. It seems to me that mariadb and mysql has to use the same my.cnf, since they use the same data directory /var/lib/mysql. Otherwise a user switching from mysql to mariadb or vice versa could experience all kinds of problems when the my.cnf suddenly changes server configuration.