[Python-modules-team] [Pyro] parallel installation of pyro 3.x and 4.x (was Pyro 4 in Debian)

[Irmen]

On 12-8-2010 11:23, Alexandre Fayolle wrote:
> I'm forwarding the message below (with some slight editing) to the pyro-core
> mailing list for feedback.
>
> Irmen, in order to ease parallel installation of pyro3 and pyro4, would you
> mind changing the package name of pyro4 from 'pyro' to 'pyro4'? I think this
> would be beneficial for many users and that it would ease migration to pyro 4
> (by easing the detection of which version is installed, and allowing legacy
> application to run side by side with new apps). Being able to have both
> versions installed is a must have from a system administration point of view
> (both installed on the same machine, and both running on the same LAN).


Alexandre, are you referring to the debian software package name?
I'm not making those packages myself. That is taken care of by the package maintainer 
which is now Carl Chenet, I believe.
I added him explicitly to the cc-list.

Carl, can you comment on this? I think Alexandre has a valid concern.

>
> Logilab is a pyro 3 heavy user (with the Cubiweb [1] framework), and we cannot
> afford to migrate to pyro 4 right now.
>
> Thanks for your feedback.
>
> [1] http://www.cubicweb.org/

Regards

Irmen de Jong




>
> ----------  Forwarded Message  ----------
>
> Subject: [Python-modules-team] please provide 2 packages: pyro and pyro4
> Date: Thursday 12 August 2010, 10:55:56
> From: Alexandre Fayolle<afayolle at debian.org>
> To: 589172 at bugs.debian.org
> CC: python-modules-team at lists.alioth.debian.org
>
> As Sylvain said, pyro4 changes the ABI and therefore this update breaks any
> application deployed on the system depending on pyro 3.x.
>
> The best move imo would be to keep pyro4 in Debian experimental, since most
> users are using the official stable release (3.x branch), and to revert to pyro3
> in sid/testing.
>
> I suggest providing 2 packages pyro and pyro4, which could at first conflict
> with each other. I think upstream should be contacted, and asked to change the
> namespace of pyro 4.x to pyro4 in order to ease parallel installation of both
> versions.
>
> In any case, please do not release squeeze with pyro 4.x as "pyro". This will
> be very painful. We really want pyro 3.9 in squeeze, as 4.x will break
> external applications.
>
> I'll be happy to help on this matter once