Update to Qt6

[yogurtearl]

Update to use QT 5.15.5 5.15.3 or later
https://www.qt.io/blog/commercial-lts-qt-5.15.5-released

Contains a fix for this proxy issue:
#2325 (comment)

[minhio]

[townsend2010]

Yes, we can update to this version on Windows and macOS, but on Linux, it's more tricky. When building the Multipass snap with the core20 base, we are stuck at Qt version 5.12.8. If we were to move to the core22 base, we then get Qt version 5.15.3, so still not new enough. Qt6 is available when using the core22 base but switching over all of our Qt code to use Qt6 will be a fairly big effort.

[minhio]

Yes, we can update to this version on Windows and macOS, but on Linux, it's more tricky. When building the Multipass snap with the core20 base, we are stuck at Qt version 5.12.8. If we were to move to the core22 base, we then get Qt version 5.15.3, so still not new enough. Qt6 is available when using the core22 base but switching over all of our Qt code to use Qt6 will be a fairly big effort.

@townsend2010 thank you for the update/context

[yogurtearl]

@townsend2010 just updating on Windows and macOS would be a great help for us.
This is a hard showstopper for us using multipass, and I haven't found a workaround. :/

[minhio]

@townsend2010 just updating on Windows and macOS would be a great help for us. This is a hard showstopper for us using multipass, and I haven't found a workaround. :/

ditto

[yogurtearl]

Looks like 5.15.10 is out.

https://www.qt.io/blog/commercial-lts-qt-5.15.10-released

[townsend2010]

Hi @yogurtearl and @minhio,

What platforms are you using Multipass on? If it's not Linux, then we can address this. On Linux, we are just constrained by what the Ubuntu archive provides for the Qt version without a bunch of heavy lifting on our part such as the aforementioned move to core22/Qt6 or building Qt from source.

[minhio]

Hi @yogurtearl and @minhio,

What platforms are you using Multipass on? If it's not Linux, then we can address this. On Linux, we are just constrained by what the Ubuntu archive provides for the Qt version without a bunch of heavy lifting on our part such as the aforementioned move to core22/Qt6 or building Qt from source.

I'm on a M1 Mac 🤞🙏

[yogurtearl]

Well... so far we aren't using it, because of #2325 😅

Our potential use case would be for Windows and macOS (both Intel and Apple Silicon).

[yogurtearl]

If we were to move to the core22 base, we then get Qt version 5.15.3, so still not new enough.

Actually I think this could work for core22 as well.

Looks like 5.15.3 contained the needed fix (I just updated the issue description):

https://invent.kde.org/qt/qt/qtbase/-/blob/c8989ca20fa5798f7853f07df6e150cc407c64a4/src/network/kernel/qnetworkproxy_mac.cpp#L211

[townsend2010]

Oh, I see, those newer versions are commercial versions which we are not using. We use the fully open source version which is currently 5.15.2. We need to wait for Qt to release a newer open source version before we can get this in Qt5. If we were to do this today, we'd need to move to Qt6.

[townsend2010]

Well, after I said that, I looked at what brew provides and it's 5.15.5, so maybe there is hope. I need to dig a little further.

[yogurtearl]

Source code for v5.15.5 is available:
https://code.qt.io/cgit/qt/qt5.git/tag/?h=v5.15.5-lts-lgpl

Also, here:
https://download.qt.io/official_releases/qt/5.15/5.15.5/

[yogurtearl]

Also, Arch Linux has 5.15.5:
https://archlinux.org/packages/extra/x86_64/qt5-base/

[minhio]

Well, after I said that, I looked at what brew provides and it's 5.15.5, so maybe there is hope. I need to dig a little further.

@townsend2010 thoughts on if 5.15.5 will make it into any of the upcoming windows/macos release? thanks!

[townsend2010]

Hey @minhio,

Yeah, I'm targeting that version for Multipass 1.11 on Windows & macOS only at this time.

[minhio]

Hey @minhio,

Yeah, I'm targeting that version for Multipass 1.11 on Windows & macOS only at this time.