The same way you are. i.e. just recompile everything. If you are building in place, I *think* you can get away with just running the setup.py script in the directory that has changed files. But don't quote me on that.
Sure, this was the idea, however since it was easierfor me to develop the viewer as a side program, I haven't done it yetbtw I find it hard to develop directly inside scikits.image, because each time I compile the library, it recompiles everything, rather than the things that changed. How do youhandle developpment of new modules.?