QGIS 3.4.4 Madeira installed on Ubuntu 18.04 using Flatpak fails to perform polygonize (raster to vector)

[qgib]

Author Name: Arjuna Rao Chavala (Arjuna Rao Chavala)
Original Redmine Issue: 21710
Affected QGIS version: 3.4.4
Redmine category:build/install

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Error log

2019-03-30T10:16:33 INFO gdal_polygonize.py /home/arjun/indiagisdata/telangana/telangana1.png /tmp/processing_91b4843dc4c543d79fff84e713ceae7b/ad747e23d2b64381933a72ead5e2f968/OUTPUT.shp -8 -b 1 -f "ESRI Shapefile" DN
2019-03-30T10:16:33 INFO GDAL execution console output
Traceback (most recent call last):

          File "/app/bin/gdal_polygonize.py", line 36, in 
         
          from osgeo import gdal
         
         ImportError: No module named osgeo

[qgib]

Author Name: Giovanni Manghi (@gioman)

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I think (not 100% sure) flatpack is not an officially supported installer, so you may need to solve some dependencies manually.

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• category_id was changed from GDAL Tools to Build/Install

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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apparently python3-gdal is missing from that flatpak. Not sure, but I think this should go to https://github.com/flathub/org.qgis.qgis/issues.

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• resolution was changed from to up/downstream
• status_id was changed from Open to Closed

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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Jürgen Fischer wrote:

apparently python3-gdal is missing from that flatpak. Not sure, but I think this should go to https://github.com/flathub/org.qgis.qgis/issues.

See also flathub/org.qgis.qgis#28

[qgib]

Author Name: Aleix Pol Gonzalez (Aleix Pol Gonzalez)

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Hi, I'm Aleix and I'm maintaining QGIS Flatpak packaging so far.
Thanks for reporting, if you ever want to get more involved in the flatpak packaging, I'll be happy to help and collaborate.

As for this issue, I'll see to it when I have some time.

Cheers!