[ 
http://jira.codehaus.org/browse/MGROOVY-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_118762
 ] 

Yogi Ray commented on MGROOVY-74:
---------------------------------

Hi Dillon,
I am getting following error message when i try to package the 
maven-apt-plugin. Can you please help me out. It is kind of urgent.

I am having <packaging>maven-plugin</packaging> in the pom.xml.  

-----------------------------------------------------
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager executing goal 
'org.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor': Unable to find 
the mojo 'org.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor' in the 
plugin 'org.apache.maven.plugins:maven-plugin-plugin'
com/thoughtworks/qdox/model/AbstractJavaEntity
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Internal error in the 
plugin manager executing goal 
'org.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor': Unable to find 
the mojo 'org.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor' in the 
plugin 'org.apache.maven.plugins:maven-plugin-plugin'
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:543)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:280)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.PluginManagerException: Unable to find the 
mojo 'org.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor' in the 
plugin 'org.apache.maven.plugins:maven-plugin-plugin'
        at 
org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:571)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:421)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
        ... 16 more
Caused by: 
org.codehaus.plexus.component.repository.exception.ComponentLookupException: 
Unable to lookup component 
'org.apache.maven.plugin.Mojoorg.apache.maven.plugins:maven-plugin-plugin:2.1:descriptor',
 it could not be started
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:339)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:440)
        at 
org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:562)
        ... 18 more
Caused by: 
org.codehaus.plexus.component.repository.exception.ComponentLifecycleException: 
Error starting component
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.startComponentLifecycle(AbstractComponentManager.java:109)
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:95)
        at 
org.codehaus.plexus.component.manager.PerLookupComponentManager.getComponent(PerLookupComponentManager.java:48)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:331)
        ... 20 more
Caused by: 
org.codehaus.plexus.personality.plexus.lifecycle.phase.PhaseExecutionException: 
Error composing component
        at 
org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPhase.execute(CompositionPhase.java:33)
        at 
org.codehaus.plexus.lifecycle.AbstractLifecycleHandler.start(AbstractLifecycleHandler.java:101)
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.startComponentLifecycle(AbstractComponentManager.java:105)
        ... 23 more
Caused by: org.codehaus.plexus.component.composition.CompositionException: 
Composition failed of field mojoScanner in object of type 
org.apache.maven.plugin.plugin.DescriptorGeneratorMojo because the requirement 
ComponentRequirement{role='org.apache.maven.tools.plugin.scanner.MojoScanner', 
roleHint='null', fieldName='mojoScanner'} was missing
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assignRequirementToField(FieldComponentComposer.java:154)
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assembleComponent(FieldComponentComposer.java:73)
        at 
org.codehaus.plexus.component.composition.DefaultComponentComposerManager.assembleComponent(DefaultComponentComposerManager.java:68)
        at 
org.codehaus.plexus.DefaultPlexusContainer.composeComponent(DefaultPlexusContainer.java:1486)
        at 
org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPhase.execute(CompositionPhase.java:29)
        ... 25 more
Caused by: 
org.codehaus.plexus.component.repository.exception.ComponentLookupException: 
Unable to lookup component 'org.apache.maven.tools.plugin.scanner.MojoScanner', 
it could not be started
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:339)
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assignRequirementToField(FieldComponentComposer.java:129)
        ... 29 more
Caused by: 
org.codehaus.plexus.component.repository.exception.ComponentLifecycleException: 
Error starting component
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.startComponentLifecycle(AbstractComponentManager.java:109)
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:95)
        at 
org.codehaus.plexus.component.manager.ClassicSingletonComponentManager.getComponent(ClassicSingletonComponentManager.java:92)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:331)
        ... 30 more
Caused by: 
org.codehaus.plexus.personality.plexus.lifecycle.phase.PhaseExecutionException: 
Error composing component
        at 
org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPhase.execute(CompositionPhase.java:33)
        at 
org.codehaus.plexus.lifecycle.AbstractLifecycleHandler.start(AbstractLifecycleHandler.java:101)
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.startComponentLifecycle(AbstractComponentManager.java:105)
        ... 33 more
Caused by: org.codehaus.plexus.component.composition.CompositionException: 
Composition failed of field mojoDescriptorExtractors in object of type 
org.apache.maven.tools.plugin.scanner.DefaultMojoScanner because the 
requirement 
ComponentRequirement{role='org.apache.maven.tools.plugin.extractor.MojoDescriptorExtractor',
 roleHint='null', fieldName='mojoDescriptorExtractors'} was missing
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assignRequirementToField(FieldComponentComposer.java:154)
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assembleComponent(FieldComponentComposer.java:73)
        at 
org.codehaus.plexus.component.composition.DefaultComponentComposerManager.assembleComponent(DefaultComponentComposerManager.java:68)
        at 
org.codehaus.plexus.DefaultPlexusContainer.composeComponent(DefaultPlexusContainer.java:1486)
        at 
org.codehaus.plexus.personality.plexus.lifecycle.phase.CompositionPhase.execute(CompositionPhase.java:29)
        ... 35 more
Caused by: 
org.codehaus.plexus.component.repository.exception.ComponentLookupException: 
Unable to lookup component 
'org.apache.maven.tools.plugin.extractor.MojoDescriptorExtractorjava', it could 
not be created
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:335)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:440)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookupMap(DefaultPlexusContainer.java:390)
        at 
org.codehaus.plexus.component.composition.FieldComponentComposer.assignRequirementToField(FieldComponentComposer.java:103)
        ... 39 more
Caused by: 
org.codehaus.plexus.component.factory.ComponentInstantiationException: Could 
not instanciate component: role: 
'org.apache.maven.tools.plugin.extractor.MojoDescriptorExtractor', 
implementation: 
'org.apache.maven.tools.plugin.extractor.java.JavaMojoDescriptorExtractor', 
role hint: 'java'
        at 
org.codehaus.plexus.component.factory.java.JavaComponentFactory.makeException(JavaComponentFactory.java:77)
        at 
org.codehaus.plexus.component.factory.java.JavaComponentFactory.newInstance(JavaComponentFactory.java:62)
        at 
org.codehaus.plexus.DefaultPlexusContainer.createComponentInstance(DefaultPlexusContainer.java:1464)
        at 
org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:93)
        at 
org.codehaus.plexus.component.manager.ClassicSingletonComponentManager.getComponent(ClassicSingletonComponentManager.java:92)
        at 
org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:331)
        ... 42 more
Caused by: java.lang.NoClassDefFoundError: 
com/thoughtworks/qdox/model/AbstractJavaEntity
        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:1618)
        at java.lang.Class.getConstructor0(Class.java:1930)
        at java.lang.Class.newInstance0(Class.java:278)
        at java.lang.Class.newInstance(Class.java:261)
        at 
org.codehaus.plexus.component.factory.java.JavaComponentFactory.newInstance(JavaComponentFactory.java:44)
        ... 46 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 10 seconds
[INFO] Finished at: Fri Jan 04 13:20:24 EST 2008
[INFO] Final Memory: 3M/7M
[INFO] ------------------------------------------------------------------------
[EMAIL PROTECTED] maven-apt-plugin]$



> Create 'groovy-mojo' packaging
> ------------------------------
>
>                 Key: MGROOVY-74
>                 URL: http://jira.codehaus.org/browse/MGROOVY-74
>             Project: Maven 2.x Groovy Integration
>          Issue Type: New Feature
>          Components: build
>            Reporter: Jason Dillon
>            Assignee: Jason Dillon
>            Priority: Minor
>             Fix For: 1.0-beta-4
>
>
> Create a new packaging to simplify Mojo development w/Groovy even more.

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