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': 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?). Emmanuel Bourg  http://packages.debian.org/sid/all/libmodello-maven-plugin1.4-java/filelist __ This is the maintainer address of Debian's Java team <http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-java-maintainers>. Please use debian-j...@lists.debian.org for discussions and questions.