title: No Xcode CLT listed by Homebrew in macOS High Sierra
body: <p>Since updating to macOS High Sierra, Homebrew reports <code>CLT: N/A</code>:</p>
  
  <pre><code>macOS: 10.13.1-x86_64
  Xcode: 9.1
  CLT: N/A
  </code></pre>
  
  <p>Previously this entry had reported the version information for the Xcode command line tools. </p>
  
  <p>Do I need to do something to fix this? Is this an expected change with macOS 10.13?</p>