conflicts

# File lib/rubygems/specification.rb, line 1708
  def conflicts
    conflicts = {}
    self.runtime_dependencies.each { |dep|
      spec = Gem.loaded_specs[dep.name]
      if spec and not spec.satisfies_requirement? dep
        (conflicts[spec] ||= []) << dep
      end
    }
    env_req = Gem.env_requirement(name)
    (conflicts[self] ||= []) << env_req unless env_req.satisfied_by? version
    conflicts
  end