Re: Package versioning and upgrades
On Fri, Mar 27, 2015 at 05:25:51PM -0400, Lennart Sorensen wrote:
> On Fri, Mar 27, 2015 at 09:46:06PM +0100, Turbo Fredriksson wrote:
> > Since ZoL (ZFS On Linux) isn't yet in Debian GNU/Linux, I've been
> > doing my own packages for ZoL in that package repo.
> >
> > This include changes to the installer (debian-installer, base-installer,
> > grub-installer, partman-target and partman-zfs). But because the Debian
> > GNU/Linux git repo refuses force pushes, they latest versions is now
> > in the ZoL GIT repo (https://github.com/zfsonlinux/debian-installers).
> >
> >
> > But I think I've painted myself into a corner regarding the upgrade
> > path.
> >
> > I have four repos:
> >
> > wheezy => The released ZoL version for Wheezy
> > wheezy-daily => The GIT master releases of ZoL for Wheezy
> > jessie => The released ZoL version for Jessie
> > jessie-daily => The GIT master releases of ZoL for Jessie
> >
> > So basically, the packages in 'wheezy' and 'jessie' are identical,
> > except they're compiled on the different versions of Debian GNU/Linux.
> >
> > Same for 'wheezy-daily' vs. 'jessie-daily'.
> >
> > Identical, in the meaning that it uses the exact same codebase/version
> > and patch set of ZoL, just compiled for different libraries
> > on two different platform version.
> >
> >
> > But certain upgrade paths isn't working (which isn't much of a
> > surprise actually - didn't quite think this through I guess):
> >
> > UPGRADE PATH STATUS VERSION COMPARE
> > wheezy => wheezy-daily = YES 0.6.3-1.3-1~wheezy lt 0.6.3-38-7d90f5-wheezy
> > wheezy => jessie = NO 0.6.3-1.3-1~wheezy lt 0.6.3-1.3-1~jessie
> > wheezy => jessie-daily = YES 0.6.3-1.3-1~wheezy lt 0.6.3-35-7d90f5-jessie
> > wheezy-daily => jessie = NO 0.6.3-38-7d90f5-wheezy lt 0.6.3-1.3-1~jessie
> > wheezy-daily => jessie-daily = NO 0.6.3-38-7d90f5-wheezy lt 0.6.3-35-7d90f5-jessie
> > jessie => jessie-daily = YES 0.6.3-1.3-1~jessie lt 0.6.3-35-7d90f5-jessie
> >
> > The versions here is the actually versions currently in the repository,
> > and the result (YES/NO) is the status of "dpkg --compare-versions".
>
> I suppose the big problem you have is that jessie is alphabetically lower than wheezy.
>
> > My question now is: How do I setup/change the versioning so that all
> > of these upgrade paths work?
>
> Well you can solve the wheezy to jessue upgradesm but I don't think you
> can solve wheezy-daily => jessie, since that really is a downgrade.
>
> > Doing this in intermediate steps isn't a problem, but I prefer not
> > to use epochs if possible (even if that would be the simplest
> > solution :)...
>
> If you were to do this:
>
> Change 0.6.3-1.3-1~wheezy to 0.6.3-1.3-2~wheezy
> Change 0.6.3-1.3-1~jessie to 0.6.3-1.3-2
> Change 0.6.3-38-7d90f5-wheezy to 0.6.3-39-7d90f5~wheezy
> Change 0.6.3-35-7d90f5-jessie to 0.6.3-39-7d90f5
>
> So always use ~wheezy suffix when building for wheezy and use no suffix
> when building for jessie, and bump the main packaging version up to make
> the new versions higher than they were before.
Alternatively, you could use release version numbers rather than code names:
0.6.3-1.3-1~Debian7 (rather than wheezy), and
0.6.3-1.3-1~Debian8 (rather than jessie)
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