Frameworks master is Qt6 now

[Nicolas Fella]

Am 18.01.23 um 23:58 schrieb Nicolas Fella:
> Hi,
>
> the master branch of frameworks repositories now required Qt6 to build.
> Maintenance of KF5 continues in the "kf5" branch.
>
> Those using kdesrc-build make sure your kdesrc-builrc contains
> "branch-group kf5-qt5", then it will switch to the correct branch
> automatically.
>
> Those building manually please adjust your workflow accordingly.
>
> Any merge requests for frameworks should target Qt6/master (unless they
> are not applicable there). If the change should be backported to KF5
> cherry-pick it to the kf5 branch after merging.
>
> Note that for the time being the kf5 branch has to stay compatible with
> Qt6. This is required to keep the currently existing Qt6 builds working.
>
> This does *not* mean that master is now open for any kind of breaking
> change. We will announce more on this soon.

Assuming no major issues with our tooling crop up soon we will proceed
with the following changes:

- Bump the KF_VERSION in master to 5.240.0. At some point we will
release one or more beta versions, which will have 5.250.0 etc as
version number. This is to follow the practice of .80/.90 version
numbers, but slightly adjusted to account for 255 being the technical
upper limit.

- Drop build system code to build with Qt5

- Rename library/target names to KF6

- Drop deprecated API. To ensure compatibility with existing Qt6 builds
this will initially be done only for API that was deprecated before
5.100 since that is what the current Qt6 CI enforces. Eventually we of
course want to drop everything deprecated, but that requires porting
consumers of it first.

I expect this to happen over the next few days. I will announce once
this is done and master is open for more invasive changes.

Cheers

Nicolas