[Ubuntu] QGis 3 on UbuntuGIS PPA

[Luí­s Moreira de Sousa]

Dear all,

a couple of points on this, from a mere Ubuntu user:

- While I have not tried it yet with 18.04, in previous LTS releases mixing the UbuntuGIS and QGis PPAs led inevitably to unmet dependencies, or worse. Hard learned experience tells me to install as much OSGeo stuff as possible from UbuntuGIS and avoid alternative PPAs.

- For an unexperienced Ubuntu user (to mee too) it is unclear which PPA is the most appropriate to obtain OSGeo sanctioned software.

- It seems odd that OSGeo charter members maintain parallel PPAs. Intuitively, concentrating efforts in one PPA would likely be more efficient.

I understand there are good reasons for the current situation, but perhaps it can improve.

Regards.

--
Luís Moreira de Sousa
Email: luis.de.sousa at protonmail.ch
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URL: https://ldesousa.github.io

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, October 31, 2018 11:37 AM, Jürgen E. Fischer <jef at norbit.de> wrote:

> [plain text would work better for me - also for the mail archive. see
> https://lists.osgeo.org/pipermail/ubuntu/2018-October/001773.html]
>
> Hi Micha,
>
> On Wed, 31. Oct 2018 at 11:18:27 +0200, Micha Silver wrote:
>
> > "The only versions of Qgis that require Ubuntugis are those built for
> > Xenial and earlier versions of Ubuntu. It is not required for later
> > versions of Ubuntu as the required packages are included in those
> > distros standard repositories."
>
> That just means theqgis.org doesn't have uptodate xenial builds for stock
> ubuntu as dependencies there are too old to build qgis with.
>
> Usually also older versions of dependencies work, but newer versions for
> ubuntugis just enable extra features or are otherwise preferable. But
> sometimes keeping support for an old version requires just to much effort.
>
> > So what would be the "best practice" for keeping an ubuntu system updated
> > as far as the GIS stack? QGIS.org + ubuntgis stable? or QGIS.org +
> > ubuntugis unstable? or something else?
>
> That's up to you and depends on your needs.
>
> You can use the stock qgis packages - but those might be old.
>
> You can use the newer qgis.org packages - but those might lack features,
> because stock ubuntu dependencies are too old. But it only introduces
> qgis and might avoid conflicts introduced by ubuntugis, if you also use other
> package sources (postgis from postgresql.org, which also requires GDAL &
> friends?).
>
> You can use the ubuntugis qgis package - but that only offers LTR.
>
> You can use qgis.org ubuntugis packages for the latest release, which ubuntugis
> doesn't offer. For LTR there's not much difference between the qgis packages
> from ubuntugis or qgis.org.
>
> What dependencies QGIS needs and what ubuntugis & stock ubuntu offer changes
> over time. So what's works good now, might not be best tomorrow.
>
> I use Debian ;)
>
> Jürgen
>