Hi,
unfortunately its currently not possible to package pydev into an PDE-build thats using the p2 director for generating a p2 repo during the build and creating an RCP app from that. The reason is as far as I can see that com.python.pydev plugin ships 2 jar files which are signed with completely outdated certificates: mail.jar and activiation.jar. I also can't see any references in the source code of pydev that would make these two necessary, so maybe they can just be removed....
Otherwise unpacking them and re-packing without signing would probably be necessary.
The error message that p2.director spits out as soon as I try to add pydev to the product is:
[p2.director] One or more certificates rejected. Cannot proceed with installation.
And the only thing changed from a working product build to getting that error is adding the
pydev feature as an included feature to the product-feature