title: Create virtual environment with all packages shown in `conda list`
body: <h1>Problem</h1>
  
  <p>I am trying to create a virtual environment for my deep learning project. However, after I created and activated the environment called <code>venv</code> using the following commands</p>
  
  <pre class="lang-sh prettyprint-override"><code>conda create -n venv anaconda
  conda activate venv
  </code></pre>
  
  <p>I found that many of the deep learning packages were <strong>not</strong> shipped with this virtual environment (the left panel is <code>conda list</code> outside the virtual env while the right panel is the one inside).</p>
  
  <p>I noticed that packages not imported has "channel" property called <code>conda-forge</code> or <code>pytorch</code></p>
  
  <p>Therefore, I am wondering how could I create an virtual environment that copies <strong>all</strong> packages rather than that only have native packages. Thank you in advance!
  <a href="https://i.stack.imgur.com/T90nN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/T90nN.png" alt="enter image description here"></a></p>