SUMMARY When trying to build plasma-workspace with systemd-user session support instead of classic session handling by passing "-DPLASMA_SYSTEMD_BOOT:BOOL=ON" to CMake, it reports that the option is unhandled. STEPS TO REPRODUCE 1. Download plasma-workspace 5.20.90 2. Run cmake with "-DPLASMA_SYSTEMD_BOOT:BOOL=ON" OBSERVED RESULT CMake spits out the following output: CMake Warning: Manually-specified variables were not used by the project: PLASMA_SYSTEMD_BOOT EXPECTED RESULT Plasma is built with systemd user sessions instead of classic ones. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 34 (Rawhide) (available in About System) KDE Plasma Version: 5.20.90 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION The option exists in the CMakeLists file: https://invent.kde.org/plasma/plasma-workspace/-/blob/252482e9/CMakeLists.txt#L195
Urgh, will fix.
The leftover cmake option was removed, there is a runtime config option which we discussed on IRC