>
> ** After the package has been installed in-place (using the develop
> command), how does one identify it as an in development project (or in
> development mode)? -- Case 3 and 6 touch on this topic (case 3 is a little
> vague at this time), but doesn't explain what type of action is intended. So
> if we install in-place (aka, develop), how does the python interpreter find
> the package? Are we using PYTHONPATH at this point (which would be
> contradict a requirement in  case 6)?
>

There is an .egg-link file that will be used by pkg_resources to find the
develop-installed packages, so my current implementation of develop command
in packaging module also adds a .distinfo-link file in the site-packages
which will be used to identify a project is installed in development mode or
not.