[Qgis-user] QGIS through conda on Linux

Mon Feb 26 08:21:03 PST 2024

I haven't tested OpenCL in a conda QGIS myself but assumed that the 
instructions would work (have working OpenCL on the host, then install 
the ocl-icd-system in the conda environment where you want to use it).

A quick test on a AMD Ryzen laptop just failed but even non-conda QGIS 
did not pick up OpenCL support on it. :\

I hope this isn't a dead end. Sorry for not keeping your goal with 
OpenCL support in mind when suggesting this initially!

On 26.02.24 15:32, Bernd Vogelgesang wrote:
> Soooo,
>
> I thought to share my steps so far, so I will not have to ask again in 
> some weeks ;)
>
> terminal:
> $ curl -L -O 
> "https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname 
> -m).sh"
> bash Miniforge3-$(uname)-$(uname -m).sh
>
> was asked to deactivate the base environment and confirmed, but 
> somehow this did not happen, so:
>
> $ conda config --set auto_activate_base false
>
> $ conda create --name qgis_3.34
>
> then I got warned that there is a newer version of conda (strange, why 
> isn't the new version installed right away?).
> So done as told:
>
> $ conda update -n base -c conda-forge conda
>
> $ conda activate qgis_3.34
>
> conda install qgis=3.34
>
> stuff is installed, but again the warning to update
>
> finally:
> WARNING: No ICDs were found. Either,
> - Install a conda package providing a OpenCL implementation (pocl, 
> oclgrind, intel-compute-runtime, beignet) or
> - Make your system-wide implementation visible by installing 
> ocl-icd-system conda package.
>
> That stuff is exactly what I was messing around with for the past week 
> to get the graphics card support in QGIS. Gnrrr...!
>
> So, what to do now? I feel like panicking ... ;)
>
>
>
>
>
> Am 26.02.24 um 14:21 schrieb Johannes Kröger (WhereGroup):
>> Don't feel dumb, it is all written and spread out in super 
>> complicated ways but once running, it's alright-ish.
>>
>> Normal Miniforge3 should be fine unless you know you want pypy.
>> Unless you know differently, try the "Miniforge3-Linux-x86_64" version.
>> Mamba is something hidden in the background, for you it will pretend 
>> to be Conda. Conda is the original project, mamba is a faster, 
>> compatible alternative.
>> Miniforge is something that comes with mamba "as conda" and 
>> automatically uses the big "conda-forge" repository where lots of 
>> software and libraries are available, packaged by the community.
>>
>> You can use the command lines from 
>> https://github.com/conda-forge/miniforge?tab=readme-ov-file#install
>>
>> After installation I recommend: $ conda config --set 
>> auto_activate_base false
>> Otherwise every terminal/shell session will run using a conda 
>> environment instead of your standard system environment.
>>
>> Once installed, you can use the "create" line from other previous 
>> mail to install a QGIS environment. Then "conda activate qgis_3.34" 
>> to activate it in a terminal session, "qgis" in that same terminal to 
>> launch that QGIS and just close the terminal or enter "conda 
>> deactivate" to deactivate it again.
>>
>> Cheers, Hannes
>>
>>
>> On 26.02.24 13:41, Bernd Vogelgesang wrote:
>>> Hi Hannes,
>>>
>>> Thanks for you answer. I played around before with those snakes and 
>>> that's what maybe brought me into trouble.
>>>
>>> And again, this zoo of species starts to confuse me, starting with 
>>> the installer:
>>> Miniforge3 or Miniforge-pypy3 ?
>>> And when does the mamba come into play instead of the conda?
>>>
>>> Sorry for me playing the dumb, but I almost spent a week trying to 
>>> get things back to normal here at my desk.
>>>
>>> Cheers,
>>> Bernd
>>>
>>> Am 26.02.24 um 12:35 schrieb Johannes Kröger (WhereGroup):
>>>> Hi Bernd,
>>>>
>>>> a pragmatic solution which I have grown to like is using conda 
>>>> environments. Using mamba instead of the default conda via 
>>>> https://github.com/conda-forge/miniforge to reduce annoyances and 
>>>> then it is for example a simple "conda --create qgis_3.34 
>>>> qgis=3.34" to get a nicely isolated QGIS 3.34 with pdal etc.
>>>>
>>>> Just make sure to deactivate the base environment in your 
>>>> terminal/shell, otherwise you are trading one potential mess for 
>>>> another ;)
>>>>
>>>> Cheers, Hannes
>>>>
>>>> On 26.02.24 12:10, Bernd Vogelgesang via QGIS-User wrote:
>>>>> Hi,
>>>>> using QGIS on the "normal" ubuntu-based Linux Mint for years, I 
>>>>> again managed to render my system unusable by playing around too 
>>>>> much, resulting in ever crashing QGIS so I even had to reactivate 
>>>>> a Windows Virtual Box to be able to work!!
>>>>>
>>>>> After a hell of problems with NVIDIA graphics drivers (opencl 
>>>>> support in QGIS), I finally managed to get everything to work with 
>>>>> Linux Mint Debian edition ... but now had to learn that Debian 
>>>>> does not provide PDAL for point cloud stuff in the repositories.
>>>>>
>>>>> Long story short: Can anyone give me recommendations how to get 
>>>>> PDAL working with QGIS that do NOT include building PDAL and QGIS 
>>>>> by myself?
>>>>> Though I USE Linux for over 15 years,I would prefer avoiding that.
>>>>> Fumbling around with too less insight on what I am actually doing 
>>>>> just led me here...
>>>>>
>>>>> Cheers,
>>>>> Bernd
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> QGIS-User mailing list
>>>>> QGIS-User at lists.osgeo.org
>>>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>
>>>
>
-- 
Johannes Kröger / GIS-Entwickler/-Berater

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