rosdep stack dependencies

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I am trying to use rosdep to install the dependencies to a package on ROS fuerte, and I am getting an error. Perhaps someone could help me out.

Suppose I have a stack foo which depends on stack bar, with manifest:

<stack>
  <description brief="foo"> foo </description>
  <depend stack="bar" />
</stack>

Suppose I don't have ros-fuerte-bar installed on my system. Will

$ rosdep install foo

prompt me to install ros-fuerte-bar? Or is it just supposed to produce an error and fail?