Charms: Proposed workflow for multi-distro development.

[James Page]

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+1

On 07/12/11 07:18, Clint Byrum wrote:
> So, with precise releasing alpha1 last week, we have a bootable dev
> release that has begun to diverge from 11.10. Adam encountered a 
> difference in the way rabbitmqctl works, and in fact, the new
> RabbitMQ has all kinds of cool new capabilities that the old one
> does not. Likewise, Precise has MySQL 5.5 allowing for some new
> functionality.
> 
> So we need to start thinking on how we want to manage the charm
> collection across multiple releases of Ubuntu.
> 
> Some of us have discussed this in private conversations, but I
> don't think we've ever publicly discussed how we think this should
> work. So here's the sequence of events I'd like to propose:
> 
> [11.10 release] - dev work continues only on oneiric charms > 
> [precise alpha 1 ] - open "precise" series of charms by copying all
> oneiric charms to precise. - Direct "dev focus" of lp:charm to
> precise. This means pushing to lp:charm/foo will now silently go to
> lp:charm/precise/foo. - Changes which are appropriate for oneiric
> are manually merged back to the oneiric charm using bzr merge.
> (perhaps we can automate this to one command similar to the
> 'backportpackage' command in Ubuntu)
> 
> I'd like to repeat this workflow with similar timing for 12.04 ->
> 12.10 as well.
> 
> One can see 1 year from now where there would be
> 
> 11.10 12.04 12.10 R-alpha1
> 
> This means a lot of changes will be happening 2 releases beyond the
> LTS, while most users will likely be using the LTS. I'm ok with
> this, but its worth noting. We will maintain charms the same way we
> do packages, where we'll require that charms be fixed in the dev
> release before any fixes are made in older releases. It will be a
> little different, as features will work the same way and be quite
> welcome in the older series releases (as long as they don't change
> the interfaces).
> 
> If everyone is ok with that, I will open a ticket to have a
> launchpad admin run the script to open precise development (its in
> lp:launchpad under scripts/branch-distro.py). Its kind of an
> irreversible thing, so I'd like to get people's +1's, not just any
> -1's.
> 


- -- 
James Page
Ubuntu Core Developer
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