[Development] Spam: Re: Commercial-only LTS phase starts: Closing the 5.15 branch(es) on 5th January

Scott Bloom scott at towel42.com
Tue Jan 5 16:23:29 CET 2021

On Monday, 4 January 2021 20:32:27 -03 Scott Bloom wrote:
> The funny thing, I remember at a Qt Dev Days when Qt 5 was about a 
> year away.  The "we will never do a Qt 3-4 type major version change 
> again" was said time and time again.
> Where functionality was missing, and no one was happy with Qt 4.0 
> except the people who got to say "4.0" released

Both statements are true but their combination is misleading.

Yes, Qt developers promised never to do a Qt 3 to 4 transition again. Yes, Qt
4.0 was missing some functionality from Qt 3, which made 4.0 an impossible target, as well as having brand new functionality that was hadn't yet matured (itemviews).

But the first statement is taken out of context and thus makes it sound that the second statement is the reason for the first. It is not. The reason why we didn't want a 4.0 transition is because of the massive amount of code changes that were required for code bases to transition to 4.0. That is not the case here, as most codebases can compile with 6.x with limited porting effort.

It's also true that some of them can't be ported to 6.0, but once 6.1 and 6.2 come along, they will be.

The concern raised by people who can't move forward and aren't getting bug fixes either is a valid one, though.

I remember the discussion in terms of "never again having a 3-4" type transition, to be two fold.  First it was definitely the level of changes to the API, no doubt.  But it was also, releasing a x.0 with missing functionality that would prevent migration.


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