[OSGeoLive] QGis LTS and Python 2.7 in the OSGeoLive

Nicolas Roelandt roelandtn.pro at gmail.com
Sat Nov 11 14:39:42 PST 2017

Yes, thanks Brian.

I red your comments on IRC, they were very informative.

One observation though, the QGIS team is working on QGIS3 which is
scheduled [1] for 2017-12-08 (less than  a month now) and it is
So python2.7 won't be provided anymore (at least by QGIS). We have some
time left until next release :

Current LTR :
*LTR* 2.18.8 2.14.15   2017-05-19

Next LTR:
*LTR* 3.4.0 2.18.24   2018-07-27

But I think we should be able to include QGIS3 in one or 2 releases (so
2018 or 2019).
There is plenty of time to discuss it, but including QGIS3 will be
challenging for us ! And we might loose some libraries too.

Great to see that OTB and ossim went well, I know by experience that OTB
can be tricky to install.

Best regards,

Nicolas Roelandt


2017-11-11 12:46 GMT+01:00 Angelos Tzotsos <gcpp.kalxas at gmail.com>:

> Thanks Brian for testing and providing feedback!
> Best,
> Angelos
> On 11/10/2017 06:19 PM, Brian M Hamlin wrote:
>> hi Angelos, all
>>  Yesterday I went through the gdal 2.2.2 transition experimental PPA, and
>> used a basic strategy to install parts.. from foundation upwards.. and
>> across related groups.  I did not detect any conflicts .. Particularly with
>> the otb set, and ossim, which are challenging to package well,
>> and therefore may be more likely to contain bugs in packaging.
>>   This summary is for two purposes..   one is to signal to Angelos  that
>> someone looked at the set
>> The second is.. I am quite excited about a new strategy for our python
>> analytics here that occurred to me
>> while doing the QGis testing.
>> QGis LTS, based in python2 and qt4, in practice pulls in almost the
>> whole  matplotlib python set that we use. pandas is the next CORE component
>> that would be needed.. with that, and a little charting support.. the whole
>> analytics chain is there (python-grass is there, too.. not clear on those
>> details)
>> I believe that the Python2 conversation with the Numpy core team is now
>> over.. they are high-achievers, and also have limited resources, so they
>> have to have a single goal .. the new single goal for Numpy core is Python3
>> by 2020.  (to be in synch between say.. Pandas 0.18 and Numpy, we may need
>> to bump Numpy up a version or two.. TBD)
>> Yet I believe, thinking about all the parts, that a solid analytics for
>> geospatial, using the existing Python2 stack,
>> is great value for users, and should be actively maintained for years to
>> come. Managing that in a respectful way, that allows all the parties to do
>> what they do best.. is the art here..
>>   I look forward to the gdal 2.2.2 transition packaging to become widely
>> available, in Debian and UbuntuGIS. And, I look forward to a new approach
>> to the maintenance of the very valuable Python 2.7 stack with Matplotlib,
>> Cartopy, Pandas and others ..
>>   best regards from Berkeley
>>   -Brian M Hamlin
>> _______________________________________________
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> --
> Angelos Tzotsos, PhD
> Charter Member
> Open Source Geospatial Foundation
> http://users.ntua.gr/tzotsos
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Bien cordialement,

Nicolas Roelandt
mail: roelandtn.pro at gmail.com
mobile: +33 (0)6 42 40 42 55
twitter: @*RoelandtN42* <https://twitter.com/RoelandtN42>
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