Consider dropping the Qt5 builds

[dae]

It might be time to start thinking about dropping the Qt5 builds. They tie us down to an old Chromium/JS version from 2019, which is becoming increasingly cumbersome to deal with as the HTML/JS ecosystem evolves, and leads to issues like #3614.

Add-on developers have had about 32 months to update their add-ons since the introduction of Qt6 at this point. Aside from the add-on stragglers, the Qt5 builds were kept around because:

• They work on older OS versions
• Some Mac users prefer the way windows can be displayed in tabs, which only works in Qt <= 5.14

But in order to support them, we're increasingly having to make Qt5-specific workarounds. And the dual builds make things more confusing for new users.

Thoughts?

[chrislongros]

I have not used Qt5 build since 3-4 years...

[glutanimate]

👍 I'm for it – add-ons have had plenty of time to adapt, plus those old Chromium targets are also becoming more and more of a headache for add-on development. Would simplify test matrices and QA for add-ons as well, which I think most developers would welcome quite a bit.

[dae]

Ok, as a first step I've removed mention of Qt5 from https://apps.ankiweb.net, and will drop the references in the manual. I'm about the flip the switch on an update notification, and think it's better to have this in place first, or we'll get duplicate reports for #3614.

[EugeneTarasenko]

Too bad. After trying both Qt5 and Qt6, Qt5 turned out to be better imho.

[Rskie]

It'd be significantly less efficient to use on mac without tabs ...

[EugeneTarasenko]

It'd be significantly less efficient to use on mac without tabs ...

Tabs are incredibly helpful when using Anki. In my opinion, this is a must-have feature!

[NicoleRauch]

I specifically switched back to Qt5 because I experienced issues on Mac (the IME did not work correctly). Is it known whether this issue is fixed? If not, I'm afraid I won't be able to upgrade in that case.

Edit: I installed the Silicon Qt6 version anyway and so far it seems to be working fine. 👍