On Mon, Mar 07, 2011 at 01:53:22AM -0500, Anders Kaseorg wrote: > On Sat, 5 Mar 2011, Steve Langasek wrote: > > For packages in wheezy/sid, it's redundant because the versioned dependency > > is already satisfied by the version of dpkg in squeeze, i.e., it's met even > > before upgrading to wheezy or sid. > I note that it’s potentially still relevant for the future Ubuntu 10.04 > LTS to 12.04 LTS upgrade, since dpkg-maintscript-helper isn’t in 10.04 LTS > (dpkg 1.15.5.6ubuntu4.5). Obviously, Debian is under no obligation to > make Ubuntu upgrades easier, although it would perhaps be nice if > packagers had the option of doing so. Right, that's a good point too. I agree that, if keeping a Pre-Depends around longer can help derivatives support clean upgrades from their stable releases, it's at least worth considering. Please read my previous comments as meaning: you shouldn't keep around a Pre-Depends on a version of dpkg found in the stable release *just* for Debian's sake. On Mon, Mar 07, 2011 at 08:16:47AM +0100, Michael Biebl wrote: > I might be mistaken here, but afaik in Ubuntu the only supported upgrade > option is using update-manager and update-manager should be able to do > such tricks like upgrading dpkg before other packages. Sure, and such tricks are not very scalable. :) Upgrade ordering requirements that *can* be expressed as package dependencies *should* be expressed as package dependencies, with update-manager quirks used as a last resort... -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ slangasek@ubuntu.com vorlon@debian.org
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