[Qgis-developer] QGIS 3 - breaking user projects?

[Paolo Cavallini]

Il 08/08/2016 03:00, Nyall Dawson ha scritto:
> On 8 August 2016 at 10:36, Chris Crook <ccrook at linz.govt.nz> wrote:
>> As an alternative to building and maintaining a bunch of translation code, how feasible would it be to build something like a python project migration tool?
>>
>> I'm not very familiar with the project XML structure but I'm wondering if it could be done using a python xml library which could update the appropriate bits of the project file without needing to handle the full structure (eg using libxml or something like that).   That would provide some support to users if their projects were broken by the updates without adding to the core code base.  (Similar idea to python 2to3 tool, but a lot simpler of course).  It needn't be perfect - if it handled 95% of cases then that would still be a great improvement.
> 
> That's a good alternative. The conversion wouldn't actually be that
> complex - it's just a matter of time really.
> 
>>
>> Note that while 2.6 may seem ancient history from a developer point of view, for users in secured corporate environments it can be difficult to get newer versions of software approved and installed.  I suspect that running older versions is more widespread than you might think!
> 
> Sounds like a perfect opportunity for one of these companies to step
> up and sponsor this work...

Hi all,
agreed:
* let's drop compatibility
* make this very clear in release notes
* offer the opportunity to sponsor an external utility (a plugin?) to
convert old project.
Thanks.
-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html