[Qgis-user] Getting QGIS 3.4 to install on Debian 9 (Stretch).

[Andre Joost]

Am 03.12.18 um 03:08 schrieb Patrick Dunford:
> 2.14 is the version supplied by the Debian distro's own repositories for
> stretch. You need to make sure you are using the Qgis repositories to
> access current versions of Qgis.
>
> List the deb statements that refer to the Qgis repositories you are
> using (either /etc/apt/sources.list or any .list files in
> /etc/apt/sources.list.d)
>
> For example on my computer I added these lines to the end of
> /etc/apt/sources.list:
>
> deb https://qgis.org/debian/ stretch main
> deb-src https://qgis.org/debian/ stretch main
>

You might need to add the QGIS key as well. Otherwise debian does not 
trust the qgis repo and takes its own qgis version:
https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu
"In case of keyserver errors add the qgis.org repository public key to 
your apt keyring, type:"

Anyway, "sudo apt-cache policy qgis" should tell you what is available 
for you.

HTH,
Andre Joost