I've recently found that poms I deal with are increasingly complicated, with submodules, multiple steps that can fail due to platform specific (non-java) related bugs, etc...
Since maven's functionality is now more sophisticated, has any tooling arrived that will allow us to debug / step through a maven build, mojo by mojo, or for example, module by module? At the moment, I usually resort to running builds and scanning, by eye, for errors in the rather verbose output of the standard mvn incantations.