title: How to interpret conda package specifications such as "feature:/win-64::__cuda==11.1=0"?
body: <p>I run conda install but it throws the following error:</p>
  <blockquote>
  <p>UnsatisfiableError: The following specifications were found to be
  incompatible with your system:</p>
  <ul>
  <li>feature:/win-64::__cuda==11.1=0</li>
  </ul>
  <p>Your installed version is: 11.1</p>
  </blockquote>
  <p>I'm not asking how to solve this error, but what does the statement mean?</p>
  <p>How do I read <code>feature:/win-64::__cuda==11.1=0</code>?</p>
  <p>what is <code>:/</code>, <code>::</code>, <code>__</code>? What is <code>11.1=0</code>?</p>
  <p>If my installed version is 11.1, does the package require cuda version 0?</p>