maybe this was covered before, but I&#39;m looking for clarification on how pip upgrades are to work under PEP439.<div><br></div><div>I see 3 relevant bits right now:</div><div><br></div><div><div>1) &quot;attempts to import pip machinery. If it can then the pip command proceeds as normal&quot;</div>
<div><br></div><div>i.e., once it has a pip installed, it doesn&#39;t automatically upgrade on subsequent imports.</div></div><div><br></div><div>2) &quot;A bootstrap is used in the place of a the full pip code so that we don&#39;t have to bundle pip and also the install tool is upgradeable outside of the regular Python upgrade timeframe and processes&quot;</div>
<div><br></div><div>to be clear, what is the &quot;install tool&quot; here?  pip? or the bootstrap?</div><div><br></div><div>3) &quot;Manual installation of the pip implementation will be supported through the manual download of the wheel file and &quot;pip3 install &lt;downloaded wheel file&gt;. This installation will not perform standard pip installation steps of saving the file to a cache directory or updating any local database of installed files.&quot;&quot;</div>
<div><br></div><div>I guess this means &quot;manual upgrades&quot; as well?</div><div>this special logic is to be inside pip itself? or an override of &quot;install&quot; in the bootstrap (that detects when it&#39;s a pip wheel)?</div>
<div><br></div><div>Marcus</div>