assignment of custom property type issue since Qt6.6

[Sander van Grieken]

Hi List,

Since upgrading Qt6 from 6.4.2 to 6.6.2 (debian testing) I'm getting errors when assigning a custom type in one QObject to a same-typed property in another QObject.

e.g. 'Unable to assign Simple to Simple'

see also the attached assign-bug.py testcase.

Changing the setter in the consumer to QVariant fixes the issue, and the
type is the actual custom type

See the attached assign-bug-variant.py testcase.

Not sure if this is a PyQt issue, or that there is a issue between distro Qt6 and PyQt6.

Any thoughts?

grtz,
Sander
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