title: Included setup.py in bdist generated library
body: <p>I am trying to generate a simple Python library using the following command:</p>
  
  <p>```</p>
  
  <blockquote>
    <p>python setup.py bdist_dumb
    ```</p>
  </blockquote>
  
  <p>So it will generate a tar.gz file with the contents specified in the setup.py script.</p>
  
  <p>Once it is generated, I try to install ot using pip install command, but I am getting an error referrinf to the missing file setup.py.</p>
  
  <p>I have specified to include such file in a MANIFEST.in file. But when I attempt to build the file, it is not included in my package.</p>
  
  <p>As a reference I am checking pyspark package, but I can't find the place where the setup.py file is specified to be included.</p>
  
  <p>Can anyone give me a hint for including this file in order to install the tar.gz library?</p>
  
  <p>Kind regards,</p>