Any way to know what the package has been obsoleted by?

shirish shirishag75 at
Mon Jun 16 16:52:06 UTC 2008

Hi all,
 I had an interesting mail thread with Daniel who is a developer of
aptitude. Here's the synopsis of the same.

I can find obsolete packages using
aptitude such as

shirish at Mugglewille:~$ aptitude search "~o" |more

Now my query is, is there a way to know by what has a package been
obsoleted. From what little I have understood of obsolete packages in
Ubuntu/debian obsolete packages mean either those packages which have
nobody to maintain or something or whose functionality has been
superseded by some other packageAny way to know what the package has
been obsoleted by?.

 This information is not stored in any way that aptitude can get at it,
so no, you can't find this out.  In fact, I don't believe there's any
tool that can do this, because the information isn't published in a
machine-readable form anywhere (please correct me if I'm wrong).

 You could maybe search for packages that replace or conflict with your
obsolete package, but that's a scattershoot approach, at best.

Now this I find very saddening if one cannot do this. Does anybody
know any tool which does something what I have outlined above. In
aptitude ver. one comes to know of obsolete packages
but doesn't tell anything more as to what its superseded with. Looking
forward to comments, additions and suggestions to the same.

 Shirish Agarwal
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