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Re: downgrading libc6 ?

On Tue, Nov 19, 2002 at 10:21:28PM +0000, Pigeon wrote:
> On Mon, 18 Nov 2002 15:58:18 -0800 (PST), "nate"
> <debian-user@aphroland.org> wrote:
> >Frisurf said:
> >> A question for a friend of mine: is it possible to downgrade libc6. he
> >> upgraded libc6 on his stable machine using the unstable's version. He
> >> encountered some problems trying to downgrade (installing the former
> >> .deb). A conflict with libdb1-compat  .
> >>
> >> I read in an old forum (August 2001) that downgrading libc6 is not
> >> supported. Is that true?
> >
> >if libc6 is the ONLY thing he installed it may be possible to force
> >downgrade. one of my friends installed the unstable of libc6 version
> >on a potato system about 8 months ago because he thought he could do
> >this to run the new mailman. of course many things broke. 
> Yeah. This is a PITA. Want a new package? Sure, but you need a new C
> library. But what about all my other packages? They'll all break,
> you'll have to get new versions. I don't want new versions, the
> current versions work just fine and I've got better things to do than
> download and reinstall half the system. Well, tough shit.
> C'mon. This is Linux, not Windoze. There must be some way to install
> BOTH libraries and tell the dynamic linker which one goes with which
> package. This isn't the OS which tells you "no, you can't do that and
> we're not going to tell you what's wrong or what to do about it". This
> is the "you can do anything short of solving the halting problem by
> editing some file with a text editor" OS.
> Isn't it?

Probably the easiest way would be a chroot environment for each libc
library, or if it's only a few packages/binaries you might be able to use a
ld-preload trick or something...

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