In pacman view, -debug package doesn't depends on its non -debug package

[u34--- via arch-general <arch-general@xxxxxxxxxxxxxxxxxxx>]

Am I right the new -debug packages do not depend, pacman wise, on their 
binary, non -debug packages? By that I mean pacman --upgrade somepkg-debug 
will sucsseed even when somepkg is not installed.
Such dependency looks to me obvoius. Why was it decided not to have it?

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u34