I'm surprised the plugin runs at all for you.  When I tried with Similar
config with the m2e connector,I got an error message that it couldn't run
in anything less than package posse in eclipse in an aggregator project.
referenced Jira MDEP-98 or 89 if memory serves.
On May 20, 2016 6:50 AM, "Christian Dietrich" <christian.dietr...@itemis.de>
wrote:

> Hi,
>
> i have the problem that m2e fails to do an unpack inside eclipse while
> maven on command line is working fine.
>
> what could be the problem for that?
>
> Thanks
> Christian
>
> Error unpacking file:
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product/pom.xml
> to:
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product.tests/target/work
> org.codehaus.plexus.archiver.ArchiverException: Error while expanding
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product/pom.xml
>
> (org.apache.maven.plugins:maven-dependency-plugin:2.8:unpack:unpack-product:compile)
>
> org.apache.maven.plugin.MojoExecutionException: Error unpacking file:
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product/pom.xml
> to:
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product.tests/target/work
> org.codehaus.plexus.archiver.ArchiverException: Error while expanding
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product/pom.xml
>         at
>
> org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:323)
>         at
>
> org.apache.maven.plugin.dependency.fromConfiguration.UnpackMojo.unpackArtifact(UnpackMojo.java:128)
>         at
>
> org.apache.maven.plugin.dependency.fromConfiguration.UnpackMojo.doExecute(UnpackMojo.java:106)
>         at
>
> org.apache.maven.plugin.dependency.AbstractDependencyMojo.execute(AbstractDependencyMojo.java:167)
>         at
>
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:331)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1362)
>         at
> org.eclipse.m2e.core.internal.embedder.MavenImpl$11.call(MavenImpl.java:1)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1360)
>         at
>
> org.eclipse.m2e.core.project.configurator.MojoExecutionBuildParticipant.build(MojoExecutionBuildParticipant.java:52)
>         at
>
> com.ianbrandt.tools.m2e.mdp.core.MdpBuildParticipant.executeMojo(MdpBuildParticipant.java:133)
>         at
>
> com.ianbrandt.tools.m2e.mdp.core.MdpBuildParticipant.build(MdpBuildParticipant.java:67)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:137)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:172)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1$1.call(MavenBuilder.java:115)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:112)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1.call(MavenBuilder.java:105)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:176)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
>         at
>
> org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:86)
>         at
>
> org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:200)
>         at
> org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
>         at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
>         at
>
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
>         at
>
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
>         at
> org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
>         at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
>         at
>
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
>         at
>
> org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
>         at
> org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
>         at
>
> org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
>         at
> org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:235)
>         at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
> Caused by: org.codehaus.plexus.archiver.ArchiverException: Error while
> expanding
>
> /Users/dietrich/work/xtext-maven-example/org.xtext.example.demodsl.product/pom.xml
>         at
>
> org.codehaus.plexus.archiver.zip.AbstractZipUnArchiver.execute(AbstractZipUnArchiver.java:158)
>         at
>
> org.codehaus.plexus.archiver.AbstractUnArchiver.extract(AbstractUnArchiver.java:120)
>         at
>
> org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:315)
>         ... 37 more
> Caused by: java.io.IOException: Negative seek offset
>         at java.io.RandomAccessFile.seek(RandomAccessFile.java:555)
>         at
>
> org.codehaus.plexus.archiver.zip.ZipFile.positionAtCentralDirectory(ZipFile.java:398)
>         at
>
> org.codehaus.plexus.archiver.zip.ZipFile.populateFromCentralDirectory(ZipFile.java:269)
>         at
> org.codehaus.plexus.archiver.zip.ZipFile.<init>(ZipFile.java:152)
>         at
>
> org.codehaus.plexus.archiver.zip.AbstractZipUnArchiver.execute(AbstractZipUnArchiver.java:138)
>         ... 39 more
>
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