[rfc] Upgrade requirement to PyQt 5.15 (matching new releases of QGIS using Qt 5.15.2)

[jgsogo]

Hi! I've just installed QGIS and this plugin and they are not working together.

I'm running Macos/BigSur with Python 3.9.5, and so far I've tried this combinations:

• QGIS 3.20 + Qgis2threejs 2.6 🔴
• QGIS 3.20 + Qgis2threejs 2.5 🔴
• QGIS 3.16 + Qgis2threejs 2.6 🟢
• QGIS 3.16 + Qgis2threejs 2.5 🟢

Error raises right after clicking the plugin button in QGis interface, also with an empty project. Error is a segmentation fault, so it can be related to the Qt version. I'm new to these applications, so I'm not sure where to check the version expected by Qgis2threejs and the version provided by QGIS. I'll keep investigating, but I wanted to start this post just in case someone can help.

---

Qt version used in QGIS 3.20:

⇒  otool -L /Applications/QGIS.app/Contents/Frameworks/QtCore.framework/Versions/5/QtCore
Frameworks/QtCore.framework/Versions/5/QtCore:
        @rpath/QtCore.framework/Versions/5/QtCore (compatibility version 5.15.0, current version 5.15.2)

Qt version used in QGIS LTR 3.16:

otool -L QGIS-LTR.app/Contents/Frameworks/QtCore.framework/Versions/5/QtCore 
QGIS-LTR.app/Contents/Frameworks/QtCore.framework/Versions/5/QtCore:
        @rpath/QtCore.framework/Versions/5/QtCore (compatibility version 5.14.0, current version 5.14.2)

It works with this one 🎉

Clearly, something changed from 5.14 to 5.15 and the Python wrapper (pyQT) is not compatible with both versions.

[kannes]

Is this still an issue, @jgsogo ?

[jgsogo]

I can't tell, I haven't tried it again. I'm closing this issue, if I face it again I'll reopen and add any new information. Thanks!