Maven2 antrun plugin and xdoclet issues

I was adding a custom ant task to maven2 pom.xml. It worked just fine when I built from the sub-project. E.g:

       <plugin>
         <artifactId>maven-antrun-plugin</artifactId>
         <executions>
           <execution>
             <phase>package</phase>
             <goals>
               <goal>run</goal>
             </goals>
           </execution>
         </executions>
         <configuration>
           <tasks>
             <echo>Hello</echo>
           </tasks>
         </configuration>
       </plugin>

However, when I stepped back up to the parent project and ran the build, it failed with:

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Internal error in the plugin manager executing goal 'org.apache.maven.plugins:maven-antrun-plugin:1.0:run': Unable to find the mojo 'org.apache.maven.plugins:maven-antrun-plugin:1.0:run' in the plugin 'org.apache.maven.plugins:maven-antrun-plugin'
Component descriptor cannot be found in the component repository: org.apache.maven.plugin.Mojoorg.apache.maven.plugins:maven-antrun-plugin:1.0:run.

It turns out that when building from the parent build, XDOclet is used by certain sub-projects. XDoclet depends on the maven antrun plugin version 1.0. With Maven 2.0.4 the default antrun plugin is 1.1. Thus, a conflict arises.

Found this reference: http://jira.codehaus.org/browse/MANTRUN-37

While there is no fix (XDoclet can't [yet?] be modified to use antrun 1.1, there is a workaround: Simply specify version 1.0 of the antrun plugin. I did this in pluginManagement in my parent pom.xml:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>1.0</version>
</plugin>