On Sun, Feb 01, 2009 at 03:24:57AM +0000, Nuno Magalhães
<nunomagalh...@eu.ipp.pt> was heard to say:
> > Would you mind posting the output of 'aptitude why mail-transfer-agent' or
> > 'aptitude why exim', whichever is more enlightening?
>
> $ aptitude why mail-transport-agent
> i lsb Depends lsb-core
> i A lsb-core Depends exim4 | mail-transport-agent
>
> Same results if i why on exim4. I assume lsb includes cron and other
> base-level tools that require mail functionality. Is this "all" that
> is depending on the MTA in my system? What's the equivalent apt
> command btw? show and showpkg don't seem to apply only to installed
> packages.
If you add "-v", you'll get a list of all the packages that depend
on m-t-a -- including packages that aren't installed, although installed
chains should be listed first. You could also do
$ aptitude search '?depends(mail-transport-agent)'
Daniel
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