On Mon, 29 Oct 2007, Tuomo Valkonen wrote:
> [notifying the user that the package is probably out-dated] can be
> done automatically by e.g. dead man switches embedded in the package.

This is quite a good idea.  Some variables like

	STALE_DATE= 20071128
        STALE_MESSAGE= This version is more than 30 days old.  It's
        STALE_MESSAGE+= possible that a newer version is available.  The
        STALE_MESSAGE+= original author does not support old versions.

could be used to trigger warnings from make (for source packages)
or warnings from pkg_add (for binary packages).

--apb (Alan Barrett)