Thanks for your interest!
I would love to see django-lean made compatible with easy-install /
packaging mechanisms like pypi.
Unfortunately, we don't use these systems to manage our own site, so
it is non-trivial for us to develop and test this to ensure that it
will work in a variety of scenarios.
That being said, if someone were willing to write the necessary
setup.py file we would be happy to use it to register an 'official'
distribution on pypi.
Otherwise, I'm sure we will get to it some time when we've got an hour
or two to spare.
I created an issue to track this in the meantime:
http://bitbucket.org/akoha/django-lean/issue/9/publish-django-lean-on-pypi
Cheers,
Erik