${project.build.outputDirectory} not available to maven-plugins when running inside m2e?

[tomsontom]

Before fileing a ticket I wanted to make sure that this is really a bug (I haven't written a maven-plugin before). In my Maven-Mojo i have:

@Mojo(name = "generate-scr", defaultPhase = LifecyclePhase.GENERATE_SOURCES, requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME, threadSafe = true)
public class BaesoSCRGenerateMojo extends AbstractMojo {
...
    @Parameter(property="project", required=true)
    protected MavenProject project;

    @Parameter(defaultValue = "${project.build.outputDirectory}", readonly = true)
    File outputDir;

 .....

In my execute I generate additional files into it. This works fine when I run the build on the command line. So far so good.

I then tried to integrate myself into the eclipse lifecycle by providing a lifecycle-mapping-metadata.xml but I run into errors because because it looks like the above value is null when m2e runs the plugin. My work around currently is to use project.getBuild().getOutputDirectory() instead but I wonder if it is expected that this value is null, I discovered a bug or I'm doing something I'm not supposed to do.

[tomsontom]

looks like a temporary problem on my side.