Bug#844300: nvidia-driver-libs:amd64: upgrade failure due to dependency issue

[Vincent Lefevre]

On 2016-11-14 14:01:55 +0000, Luca Boccassi wrote:
> If the i386 libraries are installed, then they must be upgraded at the
> same time. You cannot install them later. The dependencies are there to
> ensure this happens.
> 
> This looks like a bug in aptitude, which shouldn't have let the upgrade
> happen if it couldn't satisfy all dependencies. Given the i386 top-level
> dependencies, the nvidia-driver-libs-i386 metapapkg, is only a recommend
> of nvidia-driver-libs, I'd guess aptitude failed to parse it.

nvidia-driver-libs-i386 was installed, but aptitude chose to remove
it (together with other packages) for the reason it was not used:

[REMOVE, NOT USED] libegl-nvidia0:i386 367.57-1
[REMOVE, NOT USED] libegl1-glvnd-nvidia:i386 367.57-1
[REMOVE, NOT USED] libgldispatch0-nvidia:i386 367.57-1
[REMOVE, NOT USED] libgles-nvidia1:amd64 367.57-1
[REMOVE, NOT USED] libgles-nvidia1:i386 367.57-1
[REMOVE, NOT USED] libgles-nvidia2:amd64 367.57-1
[REMOVE, NOT USED] libgles-nvidia2:i386 367.57-1
[REMOVE, NOT USED] libgles1-glvnd-nvidia:amd64 367.57-1
[REMOVE, NOT USED] libgles1-glvnd-nvidia:i386 367.57-1
[REMOVE, NOT USED] libgles2-glvnd-nvidia:amd64 367.57-1
[REMOVE, NOT USED] libgles2-glvnd-nvidia:i386 367.57-1
[REMOVE, NOT USED] libglx-nvidia0:amd64 367.57-1
[REMOVE, NOT USED] libglx-nvidia0:i386 367.57-1
[REMOVE, NOT USED] libglx0-glvnd-nvidia:amd64 367.57-1
[REMOVE, NOT USED] libglx0-glvnd-nvidia:i386 367.57-1
[REMOVE, NOT USED] libnvidia-cfg1:amd64 367.57-1
[REMOVE, NOT USED] libnvidia-cfg1:i386 367.57-1
[REMOVE, NOT USED] libnvidia-eglcore:i386 367.57-1
[REMOVE, NOT USED] libopengl0-glvnd-nvidia:amd64 367.57-1
[REMOVE, NOT USED] libopengl0-glvnd-nvidia:i386 367.57-1
[REMOVE, NOT USED] libvulkan1:amd64 1.0.26.0+dfsg1-1
[REMOVE, NOT USED] libvulkan1:i386 1.0.26.0+dfsg1-1
[REMOVE, NOT USED] nvidia-driver-libs:i386 367.57-1
[REMOVE, NOT USED] nvidia-driver-libs-i386:i386 367.57-1
[REMOVE, NOT USED] nvidia-vulkan-common:amd64 367.57-1
[REMOVE, NOT USED] nvidia-vulkan-icd:amd64 367.57-1
[REMOVE, NOT USED] nvidia-vulkan-icd:i386 367.57-1

I don't know why aptitude did this. But anyway, Recommends are not
strong dependencies, and aptitude often ignores Recommends. So, you
should not rely on it.

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)