[Qgis-developer] Qt5 and Python 3

[Larry Shaffer]

Hi,

Matthias, awesome amount of effort you and Jürgen have done here. Thank you
very much.

I have started in on a complete rewrite of the CMake bundling for Mac
(leveraging BundleUtilities) that can utilize a Homebrew backend of
dependencies and generate a completely bundled app directly from a Homebrew
formula. When would be a good timeframe to start releasing a Mac Qt5/Py3
nightly?

Also, what would be the best nightly configurations for Mac to offer?
Qt4/Py2, of course, but what other combinations make sense, i.e. Qt?/Py?,
for testing? Or, should we focus only on offering two: Qt4/Py2, Qt5/Py3?

More below...

On Wed, May 4, 2016 at 8:49 AM, Bas Couwenberg <sebastic at xs4all.nl> wrote:

> On 2016-05-04 15:08, Matthias Kuhn wrote:
>
>> For the upstream QGIS packages this may be an option, for the official
>>> packages in the Debian archive it is not.
>>>
>>
>> Understandable.
>>
>> I had a look at past Debian releases, extrapolating the release cycle we
>> can expect the next release to happen in about a year.
>>
>> I don't expect a first QGIS release based on Qt5 to happen considerably
>> earlier. The first LTR based on Qt5 will certainly not happen earlier.
>>
>> Just to make sure we talk about the same order of delays. (Note: this
>> timeline has not been officially approved)
>>
>
> Debian will switch to Qt5 with QGIS 2.16, otherwise there will be no QGIS
> in the next stable release.
>
> The Qt4 builds currently still work because the Qt maintainers didn't want
> to break QGIS before Qt5 support is available, but the Qt4WebKit removal
> changes have already been committed and will be included in the next
> upload. The upload may happen sooner than we'd like if important bugfixes
> need to be uploaded in the near future.
>
> The changes affecting QGIS is the next stable release will arrive earlier
> than a year from now. The freeze was planned for 5 November 2016, but has
> been moved two months to align with the expected 4.10 kernel release. [0]
>
> With the full freeze in February 2016, I expect the release to happen in
> Q3 2016, may be even Q4. The Qt4WebKit removal will happen before the
> transition freeze on 5 November 2016.
>

Thanks for the clear and concise summary of this dependency issue. Do you
mean "February 2017" and "Q3 2017" here?

Regards,

Larry Shaffer
Dakota Cartography
Black Hills, South Dakota


> Based on the QGIS release schedule as it stands now, the plans for QGIS in
> Debian are discussed in the "QGIS 2.14 & Qt5" thread on the debian-gis
> list. [1] That is switching to Qt5 with the 2.16 non-LTR, and switch back
> to the 3.x LTRs for unstable/testing & backports.
>
> The choices for the upstream QGIS packages are not really relevant for
> Debian, it just makes the packaging changes in Debian less relevant to
> forward upstream.
>
> [0] https://lists.debian.org/debian-devel-announce/2016/03/msg00000.html
> [1] https://lists.debian.org/debian-gis/2016/02/msg00037.html
>
> Kind Regards,
>
> Bas
>
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