How to use latest snapshot of assembly plugin?

[Adam Lally]

I'm new to Maven and have been trying to figure out how to get the 
assembly plugin to do what I want for my multi-module project.  I've seen 
some messages on the list recommending to use version 2.2-SNAPSHOT which 
may have fixed some issues.  But how do I do that?

I put the following in my pom.xml:
        <build>
                <plugins>
                        <plugin>
 <artifactId>maven-assembly-plugin</artifactId>
                                <version>2.2-SNAPSHOT</version>
                                <configuration>
                                        <descriptors>
 <descriptor>src/assembly/bin.xml</descriptor>
                                        </descriptors>
                                </configuration>
                        </plugin>
                </plugins>
        </build>

      <pluginRepositories>
        <pluginRepository>
          <id>apache.org</id>
          <name>Maven Plugin Snapshots</name>
          <url>http://people.apache.org/maven-snapshot-repository</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </pluginRepository>
        <pluginRepository>
          <id>codehaus.org</id>
          <name>Codehaus Maven Plugin Snapshots</name>
          <url>http://snapshots.repository.codehaus.org/</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </pluginRepository>
      </pluginRepositories>


but when I try to build I get:

[INFO] Failed to resolve artifact.

GroupId: org.apache.maven.plugins
ArtifactId: maven-assembly-plugin
Version: 2.2-SNAPSHOT

Reason: Unable to download the artifact from any repository

  org.apache.maven.plugins:maven-assembly-plugin:pom:2.2-SNAPSHOT

from the specified remote repositories:
  codehaus.org (http://snapshots.repository.codehaus.org/),
  central (http://repo1.maven.org/maven2),
  apache.org (http://people.apache.org/maven-snapshot-repository)

 

Any ideas what I am doing wrong?  I also tried putting the 
pluginRepositories in my settings.xml as described here:
http://maven.apache.org/guides/development/guide-plugin-snapshot-repositories.html,
but I still get the same error.

Thanks in advance for any help,
  -Adam