title: Can't embed binary of embedded project in Xcode
body: <p>I have a main project, <code>Project One</code>, which is a macOS Swift app. I've added a subproject, <code>Project Two</code>, which is a Command Line Tool. I'd like the built command line tool to be embedded as a binary into the bundle of <code>Project One.app</code> where it will be called by <code>Process()</code>.</p>
  
  <p>However, I am stuck getting the built binary to embed into the main app. </p>
  
  <p><a href="https://i.stack.imgur.com/wuWr0.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wuWr0.gif" alt="enter image description here"></a></p>
  
  <p>I set things up like so:</p>
  
  <ul>
  <li>created the first main project as usual</li>
  <li>created a new project in Xcode 9.3 (a Command Line Tool, in Swift)</li>
  <li>in the Finder, dragged the <code>Project Two.xcodeproj</code> file into the Xcode sidebar, where you see it in the screencast</li>
  <li>compiled Project Two — it then appeared in Project Two's <code>Products</code> folder</li>
  </ul>
  
  <p>I <em>can</em> drag it into "Linked Frameworks and Libraries" but even after doing that, I can't drag it into Embedded Binaries.</p>