Port/package install preview

[Anselm Strauss]

Hi,

is it possible to do a real preview with portupgrade? I want to see all
ports that would be installed/upgraded when installing a particular port.
The --noexecute option doesn't really show me a lot. How would this be done
with packages? pkg_add would have to download all packges first to be able
to calculate all dependencies, or can it operate on an index file?

Anselm