[Development] Let's drop MSVC 2019 for dev (6.8)

[Oliver Wolff]

Hey hey

On 15/03/2024 16:47, Thiago Macieira wrote:
> On Monday, 5 February 2024 01:44:29 PDT Allan Sandfeld Jensen wrote:
>> I was trying to drop support for it in qtwebengine in 6.7, but the problem
>> was it was still used for qt packaging. But if we could at least switch
>> packing to vs2022, it would mean we could drop it in QWE.
> 
> Can we commit to this ASAP after the 6.7 release? We'll revisit later in the
> cycle whether we still need 2019. Do note that Microsoft is preparing the next
> release after 2022, as seen by their shipping 17.0 Tech Previews.
> 
> Jörg accidentally broke the C++ language level set up in dev, meaning we
> didn't test C++20 mode with 2019 for a day or so, and some changes that
> trigger 2019's broken C++20 support went in. If we don't drop 2019 by 6.8
> release, we should force it to only compile in C++17 mode.
> 
> 

Sorry for the long silence. I talked to some people inside the company 
and we agreed on the following plan: We will try to get MSVC 2022 
packages into 6.7 as soon as possible. For 6.8 we will then remove 
support for MSVC 2019 (and hope that not too many people rely on that 
being available in the next LTS release). That should give users some 
time to test the 2022 packages and they can report bugs and fall back to 
the 2019 packages if something breaks for them before we do the "hard cut".

Cheers,
Olli