[3dprinter-general] Bug#1074239: cura: Cura fails to start

[Gregor Riepl]

>  Some  messages that may be relevant:
> 2024-06-25 09:12:27,979 - ERROR - [MainThread] UM.PluginRegistry._findPlugin [730]: Exception: Import error loading module TrimeshReader
> 2024-06-25 09:12:27,980 - ERROR - [MainThread] UM.PluginRegistry._findPlugin [730]: Traceback (most recent call last):
> 2024-06-25 09:12:27,981 - ERROR - [MainThread] UM.PluginRegistry._findPlugin [730]:   File "/usr/lib/python3/dist-packages/UM/PluginRegistry.py", line 728, in _findPlugin
> 2024-06-25 09:12:27,981 - ERROR - [MainThread] UM.PluginRegistry._findPlugin [730]:     module = imp.load_module(plugin_id, file, path, desc)  # type: ignore #MyPy gets the wrong output type from imp.find_module for some reason.

The errors about trimesh are almost guaranteed to be a red herring.

I have a local build of python3-trimesh (which isn't packaged for Debian yet) installed and also get this issue.

Since we haven't updated Cura in a while, I suspect it's something else that broke it. Qt6 maybe?

I think think the interesting part is this here:

qt.qml.typeresolution.cycle: Cyclic dependency detected between "file:///usr/share/cura/resources/qml/Actions.qml" and "file:///usr/share/cura/resources/qml/Actions.qml"
QQmlApplicationEngine failed to load component
2024-06-30 10:11:17,960 - WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning [431]: file:///usr/share/cura/resources/qml/Cura.qml:277:13: Type JobSpecs unavailable
2024-06-30 10:11:17,960 - WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning [431]: file:///usr/share/cura/resources/qml/JobSpecs.qml:44:9: Type UM.SimpleButton unavailable
2024-06-30 10:11:17,961 - WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning [431]: file:///usr/lib/python3/dist-packages/UM/Qt/qml/UM/SimpleButton.qml:30:5: ColorImage is not a type
2024-06-30 10:11:17,981 - DEBUG - [MainThread] UM.Controller.setActiveStage [180]: Setting active stage to PrepareStage
2024-06-30 10:11:17,981 - DEBUG - [MainThread] UM.Controller.setActiveView [108]: Setting active view to SolidView
2024-06-30 10:11:17,983 - DEBUG - [MainThread] ModelChecker.ModelChecker._createView [118]: Creating model checker view.
QQmlComponent: Component is not ready
2024-06-30 10:11:17,985 - ERROR - [MainThread] UM.Qt.QtApplication.createQmlComponent [606]: file:///usr/lib/cura/plugins/ModelChecker/ModelChecker.qml:8:1: Type UM.SimpleButton unavailable
2024-06-30 10:11:17,986 - ERROR - [MainThread] UM.Qt.QtApplication.createQmlComponent [606]: file:///usr/lib/python3/dist-packages/UM/Qt/qml/UM/SimpleButton.qml:30:5: ColorImage is not a type