title: Is it possible to copy an xcode derived data cache?
body: <p>We're using Travis CI (travis-ci.com) to build an xcode iOS project and our project compile time is quite lengthy (5 minutes locally and 15 minutes on travis CI).</p>
  
  <p>To alleviate the compile time we have attempted to cache the <code>DerivedData</code> contents using <code>xcodebuild</code> argument <code>-derivedDataPath</code> and then use the travis cache (<a href="https://docs.travis-ci.com/user/caching/" rel="noreferrer">https://docs.travis-ci.com/user/caching/</a>) to copy that data back. </p>
  
  <p>The problem is that xcode seems to ignore this cached data. Does anyone know a way to force xcode to use the cache data inside the <code>-derivedDataPath</code>?</p>