setup installs packages without displaying it

[Yitzchak Scott-Thoennes]

On Sat, Nov 26, 2005 at 04:43:35AM +0100, Gerrit P. Haase wrote:
> Brian Dessent wrote:
> >3. Create a dummy package with version 99.999 or something so that setup
> >will always think that what you have installed is newer than anything
> >available.  I think this could be as simple as just editing
> >/etc/setup/installed.db to contain a line such as "autoconf
> >autoconf-99.999-1.tar.bz2 0", without actually creating a package.
> 
> This is an intresting hint, thanks.

Where in the source does setup do version comparisons?