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I'm trying to upgrade QGIS to the latest (3.0.3) under Lubuntu 18.04 LTS. However, the apt-get upgrade stopped working:

$sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  libqgis-customwidgets python-qgis python-qgis-common qgis qgis-common
  qgis-plugin-grass qgis-plugin-grass-common qgis-provider-grass
  qgis-providers qgis-providers-common
0 upgraded, 0 newly installed, 0 to remove and 10 not upgraded.

I checked that nothing is kept back with sudo apt-mark showhold.

However, the install command:

sudo apt-get install qgis

seems upgrade qgis to the latest version without an issue. The entry in /etc/apt/sources.list is:

deb https://qgis.org/debian bionic main

Any idea what could be preventing the upgrade from working? (And is it safe to force the upgrade with install?)

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  • have you done sudo apt-get update first?
    – Spacedman
    May 21, 2018 at 14:18
  • Then try sudo apt-get --with-new-pkgs upgrade - this happens if the packages to upgrade require packages that you don't have yet. unix.stackexchange.com/questions/38837/…
    – Spacedman
    May 21, 2018 at 14:22
  • I think the issue is this: 3.0 and above only available with ubuntugis (plain xenial lacks GDAL2) - meaning you'll have to hook up to the ubuntugis repository to get v3.0 on your version of Ubuntu... May 21, 2018 at 15:17
  • @Spacedman Yes, I did sudo apt-ge update first. After that, upgrade didn't work but install worked.
    – tinlyx
    May 21, 2018 at 16:19

1 Answer 1

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The short is the repository has change/moved/added a dependency. You current installation of qgis has a package it needs to install new but it isn't going to install it as a part of the upgrade, so puts a 'soft hold' on qgis. This way Debian will leave you with a out of date but working qgis installation.

If you reinstall qgis, as you pointed out, it will succeed.

https://debian-administration.org/article/69/Some_upgrades_show_packages_being_kept_back

The best-practice is to install not dist-upgrade, this could mess up your system depending on its current state.

https://askubuntu.com/a/602/75295

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