Sunsetting Qt 5

Sat Dec 7 11:39:38 GMT 2024

On Samstag, 30. November 2024 04:57:10 Mitteleuropäische Normalzeit Ben 
Cooksley wrote:
> HI all,
> 
> This past week or so i've been dealing with a number of issues relating to
> a handful of still Qt 5 based projects trying to make use of updated
> dependencies. These issues have revealed that the level of support for Qt 5
> as a platform in general is now subject to a significant degree of bit-rot.
> As such, we need to set a point at which we consider Qt 5 to no longer be
> supported.
> 
> To start I would like to remove support for all CD builds (Windows,
> Appimage, macOS) as well as CI support for Windows. There is already a
> general view in Craft that Qt 5 is unmaintained and this removal simply
> reflects that.
> 
> Additionally, several recent attempts to update our Windows Qt 5.15 images,
> based on MSVC 2019, have all failed due to various different changes (with
> the build of MPFR breaking for reasons unknown - likely MSys2 updates - and
> QXMPP failing to build yet again....) which is not a tenable position for a
> "CI supported" platform.

We already have no CI and CD for Qt 5 on Android anymore for similar reasons, 
and as the one responsible for retiring that I certainly sympathize with this.

In case of Android this was a much easier decision though, as we had no CD 
users anymore at that point.

To get an idea of the impact there's a full list of all remaining Qt5 CI and 
CD jobs on master branches attached. The script used to produce this is
in https://invent.kde.org/vkrause/kde-ci-status/. This does only cover the use 
of standard templates.

There's 119 repositories with Qt5 CI jobs. Some of those things are likely 
dead, some should probably be ported, others have to support Qt5 still, like 
the Breeze style.

There's 8 repositories with Qt5 CD jobs:
- education/kstars
- graphics/glaxnimate
- graphics/peruse
- network/kaidan
- office/crow-translate
- office/kmymoney
- office/tellico
- sdk/umbrello

Probably worth reviewing in more detail where those are on the way to Qt6 and 
what can be done to support/accelerate the transition.

Regards,
Volker
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