[Distutils] current preferred way to specify dependencies? future?

[John Gabriele]

Hi,

What is currently the preferred way to specify (in your simple
setup.py file) that your distribution depends upon a couple of other
distributions? (All located at the PyPI)

What is expected to be the standard way to do this in the near future?

Also, is it better to specify that your distribution depends upon some
other *distribution*, or some other *packages/modules*?

Thanks,
---John