Breezy -> Dapper - adept wants to remove 295 packages

[Art Alexion]

On Thursday 04 May 2006 11:00, John L Fjellstad wrote:
> "Michel D'HOOGE" <michel.dhooge at gmail.com> writes:
> > IIRC all packages installed outside of aptitude are flagged as
> > "manually installed". aptitude isn't confused but it won't remove them
> > automagically if they are no longer needed. Another solution, within
> > aptitude, is to mark the really important packages as "manually
> > installed" ('m' and 'M' shortcuts). You can mark a bunch of packages
> > at once by applying the shortcut to the upper folder.
>
> There is more too it than that, isn't it?  Otherwise, we wouldn't see
> the massive uninstallations that happen when you mix apt-get and
> aptitude.
>
> >From what I can gather, something like this happens.
>
> You install program A that depends on library libA with aptitude.
> aptitude marks libA as automatically installed, and will remove it
> if A gets removed.
> You then install program B that depends on library libA with apt-get.
> At this point, doesn't know that program B is depended on libA (in the
> automatic sense, dpkg seems to know the dependency graph).
>
> You then try to remove (or upgrade) program A with aptitude.  aptitude
> sees that libA got installed with program A, and sends the request to
> remove A and libA while-you-are-at-it to dpkg.  dpkg notices that B was
> dependent on libA, so removes that too.
>
> So, if you set libA to 'manually installed', aptitude won't request to
> remove libA if A is removed.

Sounds like a pain in the a??; I'll stick with apt-get.
-- 

_______________________________________
Art Alexion
Arthur S. Alexion LLC

PGP fingerprint: 52A4 B10C AA73 096F A661  92D2 3B65 8EAC ACC5 BA7A
The attachment -- signature.asc -- is my electronic signature; no need for 
alarm.
Info @ 
http://mysite.verizon.net/art.alexion/encryption/signature.asc.what.html

Key for signed PDFs available at
http://mysite.verizon.net/art.alexion/encryption/ArthurSAlexion.p7c
The validation string is TTJY-ZILJ-BJJG.
________________________________________
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 307 bytes
Desc: not available
URL: <https://lists.ubuntu.com/archives/kubuntu-users/attachments/20060505/d86ac95a/attachment.sig>