First an introduction:
I joined the yepp devel a couple of months ago. The code is mostly written by Park (and he did a very good job), I restructured a couple of things and converted the sources to use the GNU Autotools.
The latest version (which i named 0.0.4-1) are now in CVS (need to do some configuring though).
Use the module yepp_sources (since full_sources was a bit confusing, I am removing them again)