We've just pushed a major naming change to the IntelliJ codebase. For years, we hadn't set or followed any naming conventions for modules in the IntelliJ IDEA source, and things had gotten into a total mess (for example, we had a variety of names such as hg4idea, jetgroovy, ByteCodeViewer, testng_rt, and lang-impl). As usage of IntelliJ Platform grows, this has been causing more and more problems.