[Qgis-user] QGIS uninstalled after GDAL PPA install

[J. M]

Hi again Andre,

I don't actually understand what to do with this, because I can't run 'sudo
apt-get install qgis qgis-plugin-grass' as it keeps giving me the same
error messages about broken packages.
When you say this, I don't get what this link does. I click on it and it
just takes me into a file hierarchy. Are users supposed to obtain the
downloads from here, or is it purely informative?
Try
deb https://qgis.org/ubuntugis bionic main

and it should work.

After re-installing, you should be able to install gdal-bin too.

If you want (or must) to stick to GDAL 2, remove all ubuntugis
references, and take QGIS from the ubuntu repo.You might need to remove
GDAL 3 if you already installed it.

As for removing all ubuntugis references, I have no idea where to start
with that. I opened Synaptic package manager and searched for QGIS, but
there are so many dependencies and related files I have no idea what to
remove before attempting to reinstall it. I still don't understand how
attempting to install the GDAL PPA caused the QGIS to get uninstalled (I
certainly wouldn't have done it if I'd thought it was going to remove the
software). Are there any other operations like this I should be aware of,
updates or similar which can cause QGIS to just disappear? Ideally I'd like
to remove all the repositories and dependencies which aren't strictly
necessary for the current version to run. Is there a way to check the
dependencies needed in the terminal or somewhere and filter out all the
others?

Any help would be greatly appreciated!
Cheers,
Jimi.



On Tue, Feb 18, 2020 at 2:39 PM J. M <jimimckay at gmail.com> wrote:

> Hi Andre!
>
> Many thanks once again for your help!
>
> I'll give it a go tonight and let you know. When you say remove
> references, do you mean via Synaptic or how? Manually?
>
> Thanks,
> Jimi.
> On 18 Feb 2020 13:55, "Andre Joost" <andre+joost at nurfuerspam.de> wrote:
>
>> Hi Jimi,
>>
>> Am 18.02.20 um 12:43 schrieb J. M:
>>
>>> Hi team,
>>>
>>> Well, this is a bit embarrassing. I've just started working with GIS data
>>> in Blender (BlenderGIS is a great add-on if anyone doesn't know it
>>> already). Anyway, I was trying to add a reference basemap to a Blender
>>> project with polygons in it and I got an error message telling me to
>>> install GDAL. I'm a total novice at both Blender and QGIS, so I read
>>> around and people recommending adding the GDAL PPA in QGIS directly. I
>>> did
>>> so following the Linux guidelines here:
>>> https://developers.planet.com/planetschool/gdal-qgis-installation-setup/
>>>
>>>
>> This is outdated by a few years. The current setup for QGIS can be found
>> here:
>>
>> <https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu>
>>
>> You have two choices: With or without the ubuntugis ppa.
>> The ppa holds GDAL 3.0.2 along with all dependencies.
>> Without the PPA, you can get GDAL 2.2.3
>>
>> QGIS supports both channels, using a different folder to download from.
>>
>>
>> The following packages have unmet dependencies.
>>>   qgis : Depends: gdal-abi-2-2-3
>>>
>>
>>
>> This seems to be the QGIS version without ubuntugis support.
>>
>> Try
>> deb https://qgis.org/ubuntugis bionic main
>>
>> and it should work.
>>
>> After re-installing, you should be able to install gdal-bin too.
>>
>> If you want (or must) to stick to GDAL 2, remove all ubuntugis
>> references, and take QGIS from the ubuntu repo.You might need to remove
>> GDAL 3 if you already installed it.
>>
>> HTH,
>> Andre Joost
>>
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