Does the Plug-in Spy work in RCP?
Yes, but you’ll miss out on the fancy hyperlinking… instead all classes are resolved to their fully qualified name. Outside the normal RCP set of dependencies, the spy depends on org.eclipse.ui.forms which is fairly minimal and is probably in your RCP application already. Here’s a quick screenshot of the famous RCP Mail example from PDE with two extra dependencies added (org.eclipse.ui.forms and org.eclipse.pde.runtime which contains the spy):
Does the Plug-in Spy work in Eclipse 3.3?
It should, it doesn’t depend on anything from the 3.4 code base. I’d just build your own copy of the spy from HEAD and export it using the PDE wizards.
Does the Plug-in Spy work in Eclipse 3.2?
No, it takes advantage of some things found in the Platform Command Framework which made its debut in the 3.3 version of Eclipse. In theory the spy could work in 3.2, but it would require a rewrite and that’s something I’m not interested or have time for right now. There are bigger fish to fry in PDE at the moment to make plug-in development truly a first-class experience.