I installed IvyDE within Eclipse marketplace. Eclipse is Juno version. I do not see the Ivy jar file within the following location: Preference>Ant>Runtime> Contributed Entries Global Entries
Therefore, it is also not within the following location: Preference>Ant>Runtime>Types.
Which means when I run a simple build.xml as shown below, it fails with appropriate error:
testbuildivy.xml:3: Problem: failed to create task or type antlib:org.apache.ivy.ant:settings
<project name="test ivy" default="test" xmlns:ivy="antlib:org.apache.ivy.ant">
  <target name="test" description="Test ivy installation">
     <ivy:settings />
  </target>
</project>
How should I install the Ivy Eclipse plugin, or what other configuration steps are necessary to get Ant to recognize Ivy within Eclipse?
Attempts
- Add jar to Contributed Entries not possible.
 - Checked plugins and features directory, Ivy jar is there.
 - Tried eclipse with clean option no effect.
 
                        
I uninstalled Ivy. I reinstalled it through Help>Install New Software rather than through the marketplace. I surmise marketplace was not pulling in all dependencies. It appears additional dependencies were installed this time. clean option was not needed. All worked as expected when MarketPlace not used.