title: How to copy files from a path found in env strings?
body: <p>trying this fails NSIS during installer building... in any way I try t put it. </p>
  
  <pre><code>readEnvStr $R0 "QT_PATH"
  File $R0\bin\QtCore4.dll 
  File $R0\bin\QtGui4.dll  
  </code></pre>
  
  <p>During installer building, i'd like to include files from a path encoded in the environment string QT_PATH. how can this be done?</p>