Hi,

I'm trying to package MuseScore 4.4.2 and between 4.3 and 4.4 they seem to have gone to Qt 6 for this release. The issue I'm encountering is that I can't find Qt6StateMachine packaged or used anywhere in the Guix sources, and I can't find it as a module on the Qt mirrors [1]. Not knowing how to source this package CMake errors out with:

Does anyone have any idea how to approach this problem?

I've attached my current WIP patch.

[1]: https://mirrors.ocf.berkeley.edu/qt/official_releases/qt/6.6/6.6.3/submodules/