Blender provides an engine plugin API for 3rd party engines (such as PySoy) to be run inside Blender. Unfortunetly, Blender doesn't provide a simple method for such addons to be installed.

A Waf tool for Blender extensions first needs to discover Blender's version, the version of Python Blender is using, and the location of Blender's system directory (see DirectoryLayout).

Then, the files need to be installed to the appropriate directory during the install phase.

While working on this task you should join and remain in #CopyleftGames and #Waf on Freenode to get help, feedback, and guidance from mentors and other developers.

When done, create a patch by using git-format and submit an enhancement request to the Waf bug tracker on googlecode and post the resulting URL to this task.