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From: Simon Wright <simon@pushface.org>
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Subject: Re: Beginners question: Compound types, how-to?
Date: Mon, 01 Nov 2010 21:31:01 +0000
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"Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr> writes:

> By the way, this make me think about a question : when a child package
> does not formally requires a view on its parent, is it to be
> considered a design error ? This may occurs.

Well, there needs to be _some_ reason! It's not uncommon to have a
top-level package with no functionality other than to provide a separate
namespace. For example,

   --  This is the parent package for a library of useful units provided
   --  with GNAT

   package GNAT is
      pragma Pure;
   end GNAT;