[Interest] [Development] Qt 6.5 Is Irrelevant for More than 95% of Mac Desktops

Michael Jackson mike.jackson at bluequartz.net
Fri Dec 16 23:44:16 CET 2022

I agree here. Is Qt 6.5 now using an API or a compiler feature that macOS 10.15 does not support? If that is the case then sure I agree with the change. If you are changing "just to change" then I don't really agree. I sort of get the argument that "Apple stopped supporting 10.15" but what implications does that have for Qt 6? Is there a security library that Qt 6 depends on (OpenSSL is my guess) that 10.15 isn't now updating? Is Qt 6 using the new APIs from that version of OpenSSL (or what ever library broke)? Is there a graphics API that Qt 6 now depends on that is macOS 11.0 and greater? Maybe that is the reason?

Mike Jackson

On 12/16/22, 16:15, "Interest on behalf of Alexander Dyagilev" <interest-bounces at qt-project.org on behalf of alervdvcw at gmail.com> wrote:


    It's understandable why Apple did this.

    But why did you do this? Does the supporting of 10.15 really increase 
    the development cost for Qt Company?

    On 12/16/2022 3:39 PM, Thiago Macieira wrote:
    > On Friday, 16 December 2022 09:20:44 -03 coroberti wrote:
    >> Hi,
    >> Since Qt 6.5 drops Mac OS 10.15 Catalina,
    >> it apparently starts to be irrelevant for at least 95% of Mac Desktops.
    > Please note the problem is that *Apple* dropped 10.15 earlier this year.  Its
    > last security release was already released and there won't be any new ones any
    > more. If you have a problem with that, you can contact Apple support or vote
    > with your pocket on your next computer or OS.
    > In any case, even though the Qt minimum supported release is now 11.0, 10.15
    > will still work for a while. Eventually, there will be your usual crop of API
    > uses that won't work in 10.15, but right now they aren't there because the
    > minimum version bump only happened last month in Qt. So 6.5 will likely
    > compile on 10.15 out of the box, or with minimal action on your part.
    >> To keep Qt-6 being still relevant for Mac Desktop open-source
    >> development, please
    >> consider keeping  Mac OS 10.15 as a target.
    > If you convince Apple to restart support for it, sure.
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