title: Xcode 8 Command Line Tools Missing (Git, Clang, etc)
body: <p>Two days ago, I upgraded to OSX Sierra. My development tools seemed to be working fine after that.</p>
  
  <p>However, today I upgraded Xcode 7.3.1 -> 8.1 to make certain features work for React-Native development. To be precise, I deleted the 7.3.1 and installed 8.1 anew. That is where the woes had started.</p>
  
  <p>In particular, it seems that most of the Command Line Tools are gone. I get errors when trying to use <code>git</code> as well as other commands. I was able to get Git back after installing from .dmg file.</p>
  
  <p>I have also tried installing Command Line Tools using <code>xcode-select --install</code> to no avail. Installation proceeds, but none of the tools become available afterwards.</p>
  
  <p>As an example of what is happening, the following are the errors I receive when running: <code>curl -sSL https://get.rvm.io | bash -s stable --ruby</code></p>
  
  <pre><code>xcodebuild: error: SDK "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.3.sdk" cannot be located.
  gcc: error: unable to find utility "gcc", not a developer tool or in PATH
  configure: error: clang version 3.0 or later is required
  </code></pre>
  
  <p>Does someone know what the issue might be and how one goes about getting the development environment set up on Sierra + Xcode 8.1?</p>