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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Different versions of a package in the same profile?
Date: Fri, 31 Oct 2014 00:07:14 +0100
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In-Reply-To: <20141030123832.GA6721@debian.eduroam.u-bordeaux.fr> (Andreas
	Enge's message of "Thu, 30 Oct 2014 13:38:32 +0100")
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To: Andreas Enge <andreas@enge.fr>
Cc: guix-devel@gnu.org, Alex Kost <alezost@gmail.com>

Andreas Enge <andreas@enge.fr> skribis:

> On Thu, Oct 30, 2014 at 03:31:15PM +0300, Alex Kost wrote:
>> I think the latter is a bug.  IMHO it shouldn't be possible to install
>> several packages with the same name in one profile.
>
> Well, having python 2 and 3 is reasonable, and from what I saw in their
> naming scheme, it is entirely possible (the python binary being renamed
> to python 3). Qt 4 and 5 are, I think, another case. How about GTK+ 2 and=
 3?

Actually, Qt 4 and 5 use non-versioned file names under bin/.

Technically it would be easy to allow the installation of different
versions of a package in the same profile, but I wonder about the
implications.

For instance, =E2=80=98-u foo=E2=80=99 would upgrade all the installed vers=
ions of
=E2=80=98foo=E2=80=99, so you would end up with exactly the same version tw=
ice.

Ludo=E2=80=99.