What's a tidy way to save all my workflow python packages for later, such that they all have their own setup.py file?

Question

Python package directories seem overly cumbersome to me, I can't just have 1 self contained folder that is the package, if I want to distribute or locally install a suite of my packages.

If I read the documentation correctly, not only does each package folder need a second wrapper directory in order to be distributable, the official python docs actually recommend a third directory in between your setup.py file and your package directory.

So it looks like this:

my_packages/
  pkg1_wrapper/
    setup.py
    src/
      pkg1/
        main.py
        ...

  pkg2_wrapper/
    setup.py
    src/
      pkg2/
        main.py
        ...
  ...

Which seems really cumbersome compared to what it feels should be possible, something like this:

my_packages/
  pkg1/
    main.py
    ...
  pkg2/
    main.py
    ...
  ...

Do I have this right, or am I missing something?