title: (Mac OS) No matching distribution found for ray
body: <p>so I've been trying to pip install ray in a conda environment. Here's the code I use:</p>
  
  <pre><code>pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org -U ray
  </code></pre>
  
  <p>I get this error:</p>
  
  <pre><code>ERROR: Could not find a version that satisfies the requirement ray (from versions: none)
  ERROR: No matching distribution found for ray
  </code></pre>
  
  <p>I tried this on a friend's mac, and it worked perfectly fine. Any help would be appreciated.</p>