[Development] Problem finding the ToolsDependencies.cmake files - why without search paths?

[Alexander Neundorf]

Hi,

when searching Qt6 in a non-standard location, when using CMAKE_PREFIX_PATH it is 
found properly.
When not using CMAKE_PREFIX_PATH, but HINTS, it fails because the ToolsConfig.cmake 
files are not found.
This seems to be because here
https://github.com/qt/qtbase/blob/dev/cmake/QtModuleToolsDependencies.cmake.in[1]
no extra search paths are given to the find_dependency() call.

When adding (for testing) the same search paths as here:
https://github.com/qt/qtbase/blob/dev/cmake/QtModuleDependencies.cmake.in[2]
the ToolsDependencies.cmake files are found.

I understand this behaviour. But how are the ToolsDependencies.cmake files supposed to 
be found, i.e. why are there no extra paths given ?

Thanks
Alex


--------
[1] https://github.com/qt/qtbase/blob/dev/cmake/QtModuleToolsDependencies.cmake.in
[2] https://github.com/qt/qtbase/blob/dev/cmake/QtModuleDependencies.cmake.in
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