We are glad to inform you, that we already have working Valentina Reports engine with datasource from mySQL.
We have use one of BSD clients compatible with mySQL Server. This resolve any issues related with GPL-license of mySQL native drivers.
Please note, that this mySQL datasource for now works only for Valentina Reports ADK, but not in Valentina Studio – Report Editor. To prepare reports in the GUI Editor you need to use Valentina or Postgre or SQLite database with the same tables. But do not worry, in about 1.5-2 months we will introduce 5.x version of Valentina Studio, with full-featured mySQL plugin also.
Right now, you can make dump of schema of mySQL database, and load that dump into local Valentina DB, then use it as test-db to design report(s). Later, from ADK application, just specify mySQL datasource against this report(s). For mySQL you should use connection string of kind
theReport = my_project.MakeNewReport( "report_1", "mysql://host=192.168.2.33, user=admin, passw=admin", "SELECT fldName, fldPhone FROM tblPerson" )