This is a bug really in clutter-1.0 for not generating tight enough dependencies. See also [1]. I've asked for a binNMU against the fixed clutter version. For the time being, please downgrade to the version in wheezy. I'd like to keep this bug open, so users with apt-listbugs installed have a chance to abort the upgrade.
Sorry for the inconvenience. Michael [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666889#137 -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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