After switching to Tycho 0.12:

svn co http://svn.jboss.org/repos/jbosstools/trunk/
cd trunk; mvn clean install

[INFO] org.jboss.tools.hibernate.jpt.core.test ........... FAILURE [2.137s]

[INFO] Cannot complete the request. Generating details.
[INFO]

{org.osgi.framework.executionenvironment=OSGi/Minimum-1.0,OSGi/Minimum-1.1, osgi.ws=cocoa, osgi.arch=x86, osgi.os=macosx, org.eclipse.update.install.features=true, org.osgi.framework.system.packages=}

[INFO] [You requested to install 'org.eclipse.jpt.feature.feature.group 0.0.0' but it could not be found]
[