From: Rupert Swarbrick <rswarbrick@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: Emacs Package Management
Date: Thu, 17 Sep 2009 12:50:04 +0100 [thread overview]
Message-ID: <h8t7pg$vu7$1@ger.gmane.org> (raw)
In-Reply-To: 87d45p29zr.fsf@thinkpad.tsdh.de
[-- Attachment #1: Type: text/plain, Size: 1347 bytes --]
Tassilo Horn <tassilo@member.fsf.org> writes:
> Another issue is updating. There the question is: Can I update package
> A without breaking any other package that needs it?
The package management system in Debian has two things to deal with this
1) Packages can explicitly depend on versions of their
dependencies. This is mostly used to make libfoo-dev version 1.2.3
only get installed with libfoo version 1.2.3
2) Sonames. When there is an ABI change in a library, there's supposed
to be a "soname bump", which in Debian means actually changing the
name of the package. It seems to me that one could simplify this
slightly by having a "soname-version" field to perform the same
function.
One thing to bear in mind is that shared libraries on unix are probably
a simpler problem than emacs libraries: I can install multiple versions
of libfoo and the dynamic linker will select the correct one for an
application. Trying to install multiple versions of an emacs package
would result in a godawful mess, because it's not just a list of
functions that can be called.
I don't know how one could solve that, so I suspect that the only
solution is to only allow one version of a package at once. I notice
that (for debian, at least) transitions between these incompatible
packages are non-trivial to organise at best.
Rupert
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next prev parent reply other threads:[~2009-09-17 11:50 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-01 21:27 Emacs Package Management Stephen Eilert
2008-08-01 22:58 ` Tom Tromey
2008-08-01 23:14 ` Phil Hagelberg
2008-08-01 23:25 ` Lennart Borgman (gmail)
2008-08-02 0:13 ` Tom Tromey
2008-08-03 1:33 ` Richard M. Stallman
2008-08-03 18:03 ` Stefan Monnier
2008-08-04 15:33 ` Richard M. Stallman
2008-08-04 19:07 ` Stefan Monnier
2008-08-05 8:04 ` Richard M. Stallman
2008-08-05 13:09 ` Stephen Eilert
2008-08-05 14:39 ` Paul R
2008-08-06 3:35 ` Richard M. Stallman
2009-09-16 22:36 ` Stephen Eilert
2009-09-17 1:44 ` Tom Tromey
2009-09-17 13:43 ` Stefan Monnier
2009-09-17 14:26 ` Tom Tromey
2009-09-17 14:58 ` Eric M. Ludlam
2009-09-28 21:13 ` Phil Hagelberg
2009-09-28 21:48 ` Lennart Borgman
2009-09-28 21:54 ` Chong Yidong
2009-09-28 22:30 ` Phil Hagelberg
2009-09-29 11:31 ` Richard Stallman
2009-09-29 19:18 ` Stefan Monnier
2009-09-29 19:41 ` Tom Tromey
2009-09-30 1:20 ` Stefan Monnier
2009-09-30 2:07 ` Tom Tromey
2009-09-30 4:39 ` Stefan Monnier
2009-09-30 20:18 ` Tom Tromey
2009-10-01 5:01 ` Stefan Monnier
2008-08-02 1:58 ` Stephen Eilert
2008-08-02 3:36 ` Tom Tromey
2008-08-02 17:30 ` Richard M Stallman
2008-08-12 4:10 ` Thomas Lord
2009-09-12 22:38 ` Phil Hagelberg
2009-09-12 23:30 ` Eric M. Ludlam
2009-09-13 16:40 ` Richard Stallman
2009-09-14 9:07 ` joakim
2009-09-14 9:26 ` David Kastrup
2009-09-15 7:16 ` Richard Stallman
2009-09-15 8:30 ` Miles Bader
2009-09-15 18:15 ` Richard Stallman
2009-09-15 18:58 ` Tom Tromey
2009-09-15 22:08 ` Miles Bader
2009-09-16 15:16 ` Richard Stallman
2009-09-16 18:41 ` Stefan Monnier
2009-09-17 1:05 ` Geoff Gole
2009-09-17 19:50 ` Richard Stallman
2009-09-15 18:55 ` Tom Tromey
2009-09-17 6:37 ` Richard Stallman
2009-09-17 8:28 ` Tassilo Horn
2009-09-17 8:37 ` joakim
2009-09-17 8:48 ` Lennart Borgman
2009-09-17 9:31 ` Tassilo Horn
2009-09-17 10:43 ` Lennart Borgman
2009-09-17 11:50 ` Rupert Swarbrick [this message]
2009-09-19 2:40 ` Bob Rogers
2009-09-19 12:10 ` Rupert Swarbrick
2009-09-17 14:24 ` Tom Tromey
2009-09-17 19:22 ` Tassilo Horn
2009-09-17 15:04 ` Eric M. Ludlam
2009-09-17 13:46 ` Stefan Monnier
2009-09-17 14:21 ` Tom Tromey
2009-09-13 17:00 ` Eric Schulte
2008-08-02 14:46 ` Paul R
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