title: Pip install pandas: installing dependencies error
body: <p>I am trying to <code>pip install pandas</code> in a virtual environment but I am having an error I really do not understand.</p>
  
  <p><a href="https://i.stack.imgur.com/g2jej.png" rel="noreferrer"><img src="https://i.stack.imgur.com/g2jej.png" alt="pandas error"></a></p>
  
  <p>I am guessing it has something to do with the <code>Double requirement given</code> but I really do not know where to go from here.</p>