468         self.constraints = {}

   468         self.constraints = {}

   469         # read dependencies

   469         # read dependencies

   470         for cube in self.cubes:

   470         for cube in self.cubes:

   471             if cube == 'cubicweb': continue

   471             if cube == 'cubicweb': continue

   472             self.dependencies[cube] = dict(self.config.cube_dependencies(cube))

   472             self.dependencies[cube] = dict(self.config.cube_dependencies(cube))

   473         # compute reverse dependencies

   474         # compute reverse dependencies

   474         for cube, dependencies in self.dependencies.iteritems():

   475         for cube, dependencies in self.dependencies.iteritems():

   475             for name, constraint in dependencies.iteritems():

   476             for name, constraint in dependencies.iteritems():

   476                 self.reverse_dependencies.setdefault(name,set())

   477                 self.reverse_dependencies.setdefault(name,set())

   477                 if constraint:

   478                 if constraint: