Aptitude search and virtual packages

[Andrew Parker <andrew@laparker.net>]

Hi,

Running aptitude searches from the command line is returning some
strange virtual packages.  Here's an example search for kernel-source
packages.

[debian ~]$ aptitude search ~v~nkernel-source
v   kernel-source                                   -
v   kernel-source-2.2                               -
v   kernel-source-2.2.19                            -
v   kernel-source-2.2.20                            -
v   kernel-source-2.4                               -
v   kernel-source-2.4-17                            -
v   kernel-source-2.4.10                            -
v   kernel-source-2.4.17                            -
v   kernel-source-2.4.18                            -
v   kernel-source-2.4.23                            -
v   kernel-source-2.6.1                             -
v   kernel-source-2.6.2.040206                      -
v   kernel-source-2.6.4.040324                      -

Note that "aptitude search kernel-source" will return the same virtual
packages plus other non-virtual packages.  

Most interesting are the last two packages (kernel-source-2.6.2.040206
and kernel-source-2.6.4.040324) which I don't think have ever existed
anywhere.  I built and installed kernel-image debs with these version
numbers from non-Debian sources, but I didn't create kernel-source
packages.

>From the aptitude curses interface I only see:
v   kernel-source                                   <none>    <none>
v   kernel-source-2.2                               <none>    <none>
v   kernel-source-2.4                               <none>    <none>

Anyone know where these mystery virtual packages are coming from?

-- 
Andrew