/usr/share/maven-repo/org/sonatype/pmaven/pmaven-groovy/debian/pmaven-groovy-debian.jar is in libpolyglot-maven-java 0.8~tobrien+git20120905-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/sonatype/pmaven/pmaven-groovy/debian/../../../../../../java/pmaven-groovy-0.8-tobrien-SNAPSHOT.jar