title: Auto-activate conda env when changing directory
body: <p>I have few conda environments that I use in different projects, say:</p>
  
  <ul>
  <li>ml37 (for machine learning)</li>
  <li>etl37 (for data pipelines)</li>
  </ul>
  
  <p>I have local projects organized in their own directories:</p>
  
  <ul>
  <li>apps/some_app</li>
  <li>apps/other_app</li>
  <li>...</li>
  </ul>
  
  <p>Each time I <code>cd</code> to a specific project, I already know which env I would like to use. So I end up doing <code>conda activate [some env]</code> each time I change directories. I feel like there must be a better way. </p>
  
  <p>What would be a clean way to automatize this?</p>
  
  <p>Or is my use of conda environments wrong?</p>