Upgrade to Qt6

[TheLastProject]

Qt6 is out. Upgrade might be simple, might be near impossible.

Should start by changing PyQt5 to PyQt6 in dependencies and seeing what breaks (hopefully nothing, possibly a lot)

[airvzxf]

I can work on this, could you please assign to me?

[TheLastProject]

Sure, let's hope it's easy instead of hard :)

[airvzxf]

It needs many changes in the code because QT6 changes a lot regarding QT5.

Added screenshots about these two errors:

• The first one I solved, removing the version of import QtQuick.Controls or adding the last version import QtQuick.Controls 6.4
  • 
• The second, I can't resolve yet, but looks like it requires changes in the code. I didn't find the Extras and Styles in QT6. You have more experience in this topic, what do you think?
  • 
• If I removed all the versions, the problem still there because in QT they are not existing.
  • 

References:

• QT5 versus QT6 ➟ Differences with Qt Quick Controls 1.
• QT6 ➟ Styling Qt Quick Controls
• QT6 ➟ Migrating from Qt Quick Controls 1
• QT6 ➟ Qt Quick Controls

[TheLastProject]

Looking at dd11097, QtQuick.Extras was included for the flat theme.

And QtQuick.Controls.Styles was added in a commit that doesn't describe it: 3fe352c

I think removing both imports may have stuff just work fine. At worst, it may misbehave during the app.setStyle calls in pext/__main__.py, those might need to be removed. As far as I know those were barely ever used ever, only called if someone started Pext specifically with the --style argument. Removing support for that if it's difficult to keep sounds completely fine to me too.

[airvzxf]

Well, I tried, and it needs to refactor and replacement because QT6 has huge changed related to QT5. Same reference Differences with Qt Quick Controls 1.

I made some changes, and it is running, but the menus are not working. Other stuff should not work. Since, I am not expert on QT, and I don't pretend to learn all QT in deep, I need your help with your experience and expertise.

I was tentative to add a summary with the changes, but it's better to see in a comparative using the GitHub tools.
https://github.com/Pext/Pext/compare/master...airvzxf:Pext:upgrade-to-qt6?expand=1

You can clone my repo (airvzxf/Pext) and checkout the branch upgrade-to-qt6. Please don't hesitate to modify and push changes.

Visible error when run in my local, any menu option is working:

[TheLastProject]

Hmm, interesting,

All I can tell is that the "Component is not ready" means that there was some QML error (it's awful to debug, I have no clue how to fix it when it occurs, I always just tried random stuff until it works). The property errors make me wonder if the MenuItem and TabBar QML6 types maybe have these functions under other names?

[TheLastProject]

By the way, I don't know how you're doing on Hacktoberfest contributions, but if you're looking for more to do quickly then #457 is probably a good place to start because you almost already did that (and this Qt6 thing will probably take longer)

[airvzxf]

Totally, agree. I'll pause this work and contribute to the other.