I have multiple projects/wsp solutions for my different Sharepoint webparts and event receivers. This is fine for development, however I would like to merge the resulting .wsp files into a single one for production deployment. Is there a way to do so? I am using vsewss 1.2 only.
This is going to be painful, but to really do this correctly for production pushes you should drop vsewss 1.2, re-organize your projects inside of Visual Studio and use WSPBuilder.
WSPBuilder is great because it takes a lot of the manual work out of creating manifest, ddf and compiling the CAB.