[Qt4???] Re: [PATCH] Show branches from master document in branch inset dialog

[Scott Kostyshak]

On Tue, Oct 18, 2022 at 03:12:40PM +0200, Pavel Sanda wrote:
> On Fri, Oct 07, 2022 at 05:05:43PM +0200, Jean-Marc Lasgouttes wrote:
> > Still, I am wondering why we insist on supporting Qt4 for 2.4.0 (especially
> > considering that we will have to continue this game for 2+ years after
> > that).
> 
> That was decided when we planned to release 2.4 at the end of 2019.
> It's clear we won't be able to push 2.4 even for next debian stable
> and I think we can relax Qt4 support and move on.

We had a conversation in July of this year. The following archive does
not seem to show some messages in the thread:

  https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg217704.html

Thibaut had some opinions, so it would be nice to hear from him first
before we decide to go forward with requiring Qt5.

I paste Thibaut's message from 14 July 2022 here:

  As 2.4 is roughly around the corner, maybe it's best to keep Qt 4
  compatibility, minus bogus behaviours of Qt 4 that are fixed with Qt 5: in
  this sense, compatibility would just be "ensure that LyX builds" (it should
  work roughly well enough) and ignoring bug reports only for Qt 4. Once
  release, we can announce that Qt 5.9 or even 5.15, for instance, will be
  the lowest tested version for LyX 2.5.
  
  I don't think it's good practice to change this kind of compatibility
  without prior warning for packagers. Otherwise, I'm 100% ok with dropping
  support for really old versions that have not been supported for a long
  while. I wouldn't be ok with saying that Qt 5.0 is the minimum, given the
  large amount of changes in Qt since 2012 (10 years ago).

By the way, I agree that 5.0 would not be the minimum. I forget, but we
need something like 5.4. I think we might have this documented
somewhere. If not, I can figure this out.

Scott
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