Use maven repository as local ivy cache

To save network, just configure ivy to use local Maven repository

      <property name="local-maven2-dir" value="${user.home}/.m2/repository/" />
      <filesystem name="local-maven-2" m2compatible="true">
        <artifact
           pattern="${local-maven2-dir}/[organisation]/[module]/[revision]/[module]-[revision].[ext]" />
        <ivy
           pattern="${local-maven2-dir}/[organisation]/[module]/[revision]/[module]-[revision].pom" />
      </filesystem>

You can specify the cache and the layout of the cache by using the

  <cache/> Tag

.

I think you will have to alter the patterns for the artifacts/ivy.xml files.
The Tag is described here: http://ant.apache.org/ivy/history/2.0.0/settings/caches.html.
It seems that it should work, but I've never tried :).