title: WIX. How to not reinstall a feature during repair?
body: <p>In WIX I'd like a feature to be installed and uninstalled normally but not to be touched during repair. </p>
  
  <p>I was not able to find a condition which would allow me to do this.
  My attempts has failed: the feature is reinstalled on repair (what I do not need) or is not uninstalled.</p>
  
  <p>This is a sample that I tried last:</p>
  
  <pre><code>&lt;Feature Id="aFeature" Title="A Features" Level="1"&gt;
    &lt;ComponentRef Id="aComponent" /&gt;
    &lt;Condition Level="0"&gt;
      &lt;![CDATA[WixUI_InstallMode="Repair"]]&gt;
    &lt;/Condition&gt;
  &lt;/Feature&gt;
  </code></pre>
  
  <p>What is the right condition to uninstall but not re-install during repair?
  Or what did I do wrong?</p>