[Qgis-user] Fw: QGIS in Conda env

[Micha Silver]

Thanks for your help, but the qca version does not seem to be the problem. I tried to create new environments using the version of qca you suggested, and also several older versions (all seem to be using qt5), but the crash is still happening.

In a Mint 22 VM I was able to setup the conda env, and qgis starts up fine. And on another laptop running Debian 12 no prob. So it must be something different with Debian 13.

Best, Micha

--
Micha Silvercell: +972-523-665918

On Sunday, June 21st, 2026 at 7:16 PM, Roland Berger via QGIS-User <qgis-user at lists.osgeo.org> wrote:

> Hi
>
> I just installed similar on linux mint. The default qca dependency is wired to QT6. But QGIS 3.4 is still on QT5. So you need a specific version of qca which has dependencies to QT5. Well, that is what claude told me. For me the following works:
>
> - conda create -n qgis-344_py313 -c conda-forge qgis=3.44.9 python=3.13.14 "qca=2.3.10=h71e8f01_0" -y
> - conda activate qgis-344_py313
> - conda run qgis
> Hope this helps
> Roland
>
> On 6/20/26 20:40, Micha Silver via QGIS-User wrote:
>
>> Sorry for the double posting. :-(
>> My registration on the list didn't go thru at first, so I re-registered and posted again. I guess the earlier posts eventually got thru after the first registration was confirmed.
>>
>> --
>> Micha Silver
>> tel: +972-523665918
>>
>> On Friday, June 19th, 2026 at 4:20 PM, Micha Silver via QGIS-User [<qgis-user at lists.osgeo.org>](mailto:qgis-user at lists.osgeo.org) wrote:
>>
>>>> I'm stuck trying to get QGIS working in a conda environment. My system is Debian 13. I setup environments with python 3.11, 3.12 and 3.13. I then installed QGIS 3.40, 3.44.7 and 3.44.9 in those environments. The installation goes OK, but in all cases, starting QGIS ends in a crash with:
>>>>
>>>> QGIS died on signal 11[New LWP 17048]
>>>> ...many lines of debug info...
>>>> Aborted (core dumped)
>>>>
>>>> I try to run QGIS with:
>>>> qgis -n -P --profile new
>>>>
>>>> I should add that the native QGIS.org *.deb installed on this computer works fine (outside of conda).
>>>> And furthermore, in a separate Debian 12 laptop, the conda installed QGIS 3.44.7 works OK.
>>>>
>>>> I'd like to have the conda installation working since the EnMAPbox plugin requires certain python packages that are not available in Debian. So the EnMAPbox devs recommend to setup the conda environment.
>>>>
>>>> Any suggestions are welcome.
>>>>
>>>> Thanks, and kind regards,
>>>> Micha
>>>>
>>>> --
>>>> Micha Silver
>>>> tel: +972-523665918
>>
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