I'm sure there's a right way to do this, and I'm obviously not doing it...

I update my pkgsrc tree via sup.
I find a new package that I want to install.
It requires a newer version of something that I already have installed (tcl/tk in
	the one I just hit)
The install halts.

What's the proper thing to do if I simply want to install this package, and
have all required updates installed too?

-- 
David Maxwell, david@vex.net|david@maxwell.net -->
(About an Amiga rendering landscapes) It's not thinking, it's being artistic!
					      - Jamie Woods