title: Wix: installing and configuring MSI packages from another MSI
body: <p>I'm building a Wix project which install an application which requires MySql server.</p>
  
  <p>Actually I bring the mysql-essential-xxx.msi package inside my Wix project, and I'm planning to execute <em>msiexec</em> using a custom action in order to install the MySql server on the machine. Successive custom action shall configure MySql server using the MySql client tools (mysqladmin to set root user password, mysql-nt to install MySql as service...)., and setup the application database (mysqlimport).</p>
  
  <p>Sadly (and I knew it) there can be only a MSI installation at time, and the <em>msiexec</em> execution fails (gracefully, because it ask me for terminate the current installation!).</p>
  
  <p>How can I workaround this? Is it possible to merge two different MSI packages into a single one?</p>