The expectation is that we can build all of annotationprocessor/compiler/gradleplugin out of the box without hacking the build files. That expectation isn't currently met, because they are all part of the same build, and the build of the gradleplugin will then fail to find its compiler dependency.

The fix for that is to take the gradleplugin out of the build, and build it separately, so that developers can build annotationprocessor+compiler first, and then build the gradleplugin. Autotests can then be constructed so that they do local publishing in that same order.