Comment # 1 on bug 1197978 from Christophe Giboudeaux

AFAIK, there's nothing in the qtcreator build system that permits installing
QtCreatorConfig.cmake.

Even qt*-creator-plugin-devel is created manually in our packages.

The plugin template shipped by qt-creator also looks broken. If I try to create
a plugin with the wizard, the generated CMakeLists.txt contains:

project(Foo)

set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_CXX_STANDARD 17)

find_package(QtCreator REQUIRED COMPONENTS Core)
find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
-------------^^

This looks broken to me. There's no FindQT.cmake