So you want to run pathman from source huh? Here's some information that might come in handy.
A note on platform independence
Pathman is currently developed and deployed on windows. It should work on every platform and python version where the dependencies are available. Keep in mind however that it has received little to no testing in those environments. The current release (0.9.1) depends on pywin32. A fix has been added to the subversion trunk to remove that dependency when not running on Windows. In the meantime either get your code from subversion (see the instructions on the main page) or comment out the appropriate lines in pathman.py (import winutils at line 22 and set_icon at line 587 of the 0.9.1 source release).
You will be prompted with the Ogre settings dialog and after that you'll be playing!
python setup.py py2exe
You will need to have both py2exe and Inno Setup installed. The installer executable will appear in the pathman directory.
If you are on another operating system, I'd appreciate it if you could contribute packaging instructions/code for your platform.