Bug#972606: plasma-workspace FTFBS: cmake error / some missing dependency

[Helmut Grohne <helmut@subdivi.de>]

Source: plasma-workspace
Version: 4:5.17.5-4
Severity: serious
Tags: ftbfs

plasma-workspace fails to build from source in unstable The issue is
fairly recent as neither reproducible builds nor crossqa have run into
it yet:

| -- Could NOT find KF5KDELibs4Support (found version "5.74.0"), checked the following files:
|     /usr/lib/x86_64-linux-gnu/cmake/KF5KDELibs4Support/KF5KDELibs4SupportConfig.cmake (version 5.74.0)
|     Reason given by package: KF5KDELibs4Support could not be found because dependency KF5ItemModels could not be found.
| 
| -- Found KF5Crash: /usr/lib/x86_64-linux-gnu/cmake/KF5Crash/KF5CrashConfig.cmake (found version "5.74.0") 
| -- Found KF5GlobalAccel: /usr/lib/x86_64-linux-gnu/cmake/KF5GlobalAccel/KF5GlobalAccelConfig.cmake (found version "5.74.0") 
| -- Found KF5DBusAddons: /usr/lib/x86_64-linux-gnu/cmake/KF5DBusAddons/KF5DBusAddonsConfig.cmake (found version "5.74.0") 
| -- Found KF5Wayland: /usr/lib/x86_64-linux-gnu/cmake/KF5Wayland/KF5WaylandConfig.cmake (found version "5.74.0") 
| -- Found KF5CoreAddons: /usr/lib/x86_64-linux-gnu/cmake/KF5CoreAddons/KF5CoreAddonsConfig.cmake (found version "5.74.0") 
| -- Found KF5People: /usr/lib/x86_64-linux-gnu/cmake/KF5People/KF5PeopleConfig.cmake (found version "5.74.0") 
| -- Found KF5ActivitiesStats: /usr/lib/x86_64-linux-gnu/cmake/KF5ActivitiesStats/KF5ActivitiesStatsConfig.cmake (found version "5.74.0") 
| CMake Error at /usr/share/cmake-3.18/Modules/FindPackageHandleStandardArgs.cmake:165 (message):
|   Could NOT find KF5 (missing: KDELibs4Support) (found suitable version
|   "5.74.0", minimum required is "5.62.0")
| Call Stack (most recent call first):
|   /usr/share/cmake-3.18/Modules/FindPackageHandleStandardArgs.cmake:458 (_FPHSA_FAILURE_MESSAGE)
|   /usr/share/ECM/find-modules/FindKF5.cmake:94 (find_package_handle_standard_args)
|   CMakeLists.txt:26 (find_package)
| 
| 
| -- Configuring incomplete, errors occurred!
| See also "/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/CMakeFiles/CMakeOutput.log".

I suspect that adding libkf5itemmodels-dev somewhere in the dependency
chain fixes this.

Helmut