Run Xcode 6.x on macOS Sierra 10.12
<p>I downloaded xCode 6 from <a href="https://developer.apple.com/download/more/" rel="nofollow">https://developer.apple.com/download/more/</a>, but it crashes after start.</p>

<blockquote>
  <p>ASSERTION FAILURE in
  /SourceCache/IDEFrameworks/IDEFrameworks-7718/IDEKit/CommandsAndSelection/IDECommandManager.m:72
  Details:  Error looking up handler class for extension
  'Xcode.IDEKit.CmdHandler.ShowViewFrames' in plug-in
  'com.apple.dt.dbg.DebuggerUI':</p>
</blockquote>

<p>The thing is - I have to run app on iOS 7.x simulator, which is unavailable from Xcode 7 and above. Is there any workaround on this topic? Is there any other way to run iOS 7 simulator from newer versions of Xcode?</p>