https://bugzilla.redhat.com/show_bug.cgi?id=1226926
--- Comment #5 from Sopot Cela scela@redhat.com --- Thank you for the prompt suggestoins.
(In reply to gil cattaneo from comment #3)
(In reply to gil cattaneo from comment #1) Seem you have duplicate tycho-maven-plugin entries in the main pom file ... is not a good idea ...
Fixed: https://sopotc.fedorapeople.org/eclipse-e4-importer/eclipse-e4-importer.spec