I don't think with can deploy two versions of a plugin in the same
package. libmodello-maven-plugin1.4-java does that  and it breaks
with Maven 2 (I haven't checked with Maven 3). Maven complains about the
version in the plugin descriptor not matching the version expected.
Here is the error I observed when updating maven-scm (it depends on
libmodello-maven-plugin-java and breaks if
libmodello-maven-plugin1.4-java is installed):
[INFO] Internal error in the plugin manager getting plugin
'org.codehaus.modello:modello-maven-plugin:1.4.x' has an invalid descriptor:
1) Plugin's descriptor contains the wrong version: 1.4.1
To work around this issue we would have to either install 2 jars in
/usr/share/maven-repo with different plugin descriptors instead of a jar
plus a symlink (this is not supported by the build helpers), or tweak
Maven to disable the version check (but is it safe?).
This is the maintainer address of Debian's Java team
debian-j...@lists.debian.org for discussions and questions.