title: Do all RDEPENDS for python need to be explicitly defined in IMAGE_INSTALL_append in Yocto?
body: <p>As a part of the creating a Recipe for the InfluxDB-python client. I added all the packages in the <code>requirements.txt</code> into the <code>RDEPEND_${PN}</code> for example:</p>
  
  <pre><code>RDEPENDS_${PN} = " python3-requests python3-json python3-dateutil python3-six"
  </code></pre>
  
  <p>However is it a necessity to add the above mentioned dependencies in the <code>local.conf</code> file as follows?:</p>
  
  <pre><code>  IMAGE_INSTALL_append = " python3-six python3-dateutil python3-json"
  </code></pre>
  
  <p>Does <code>RDEPENDS</code> not install it <em>accordingly</em>?</p>