KF 5.37 requiring Qt 5.7

[Christoph Feck]

On 02.08.2017 22:47, David Faure wrote:
> According to the policy that KF5 should work with the last 3 releases of
> Qt5.x, it is time now for upcoming releases of KF5 to drop support for Qt 5.6.
>
> Packagers: is that acceptable?
>
> Normally I would have just gone ahead with applying the policy, but after my
> recent finding that even some very recent distributions are still on Qt 5.6
> LTS, I just want to make sure.
>
> (On the other hand I guess it's fine in the actual case I know about, given
> that the OpenSuSE KDE:Frameworks5 repo is based on Qt 5.9)
>

According to https://en.wikipedia.org/wiki/Qt_version_history#Qt_5 the 
5.7 release is no longer maintained, so we have 5.6, 5.8, and 5.9 (5.5 
is still maintained, but we only support 3 three releases).