I have a multi-project build. Some of the artifacts are maven-plugins. Other artifacts depends on these plugins. For some reason the current Maven2 is not correctly doing the dependency check before building to see whether the artifacts in the multi-project build depend on other maven-plugin artifacts within the same multi-project build.
For now I solved the issue by using a second parent pom to bootstrap the build. This bootstrap parent pom is creating all the plugins. Afterwards, I can use my normal parent pom to build all artifacts.
It would be nice that Maven2 could do the 'bootstrap build' himself.