title: How to choose to install (or not) some feature using Wix Installer?
body: <p>I had ever used NSIS to make installer for my products, but I was informed that Wix is much more clean coded and more flexible.</p>
  
  <p>I am in a problem, though, 'cause during the installation the user may decide to install MySql or do not.</p>
  
  <p>How can I set this?</p>
  
  <p>I am using a bootstrapper, that call the main MSI package (with my product and a dialog to configure, and there the user may set to install or not the MySql). In the same bootstrapper I have the MySql installer call. How can I install only when needed? </p>
  
  <p><strong>Explaining my files structure:</strong>
  I have a MySql.wxs Fragment, and a PackageGroupRef in the Bundle.wxs with the bootstrapper.</p>