[qbzr] Re: Upgrading PyQt/Qt (was Updated Bazaar 2.1.0 release plan)

[Martin Pool]

On 5 February 2010 08:00, Gary van der Merwe <garyvdm at gmail.com> wrote:
> On 04/02/2010 11:52, Ian Clatworthy wrote:
>>
>> I'd also like to suggest we ship PyQt 4.7.1 and Qt 4.6 in the Windows
>> installer for 2.1.0rc3. Those are the versions we'll have in Lucid (and
>> in the OS X installer IIUIC) so that will give us a common "platform"
>> wrt support issues.
>
> I have some real reservations about this. I'm all for upgrading the PyQt/Qt
> version in the windows version, and the minimum supported version. This will
> allow us to use new features, like the ability to use super, and not having
> to wrap every thing in a QVarent. But I am strongly against doing this now.
>
> Reasons:
>
> 1. Lack of testing.
> -------------------
> Due to a weak test suit, and the nature of the software, qbzr (and I suspect
> BE to) relies alot on user testing. I don't believe that we have many
> users/dog fooders that are using PyQt 4.7 / Qt 4.6. I know of 3 people that
> I have evidence for: Ian Clatworthy, INADA Naoki, Gordon Tyler. This is not
> alot.
>
> 2. In the past, PyQt/Qt upgrades late in the cycle caused pain
> --------------------------------------------------------------
> When PyQt was upgraded in karmic to 4.6, it caused bugs in qbzr. I found
> this situation very stressful, because I did not have the means to fix the
> bugs.
>
> 3. Not really a problem using different versions on different platforms
> -----------------------------------------------------------------------
> While the windows installers have had PyQt/Qt 4.4 for a while, jaunty users
> have had PyQt/Qt 4.5 and karmic users PyQt 4.6 Qt 4.5. This has not been a
> problem.
>
> Please, lets wait till early in the 2.2 cycle to upgrade.

That makes sense to me.  Release freeze is not the time to take
unnecessary risks.

-- 
Martin