https://bugzilla.redhat.com/show_bug.cgi?id=2165946
--- Comment #6 from Jan Grulich jgrulich@redhat.com --- (In reply to Neal Gompa from comment #5)
Also note that your BR: ninja-build isn't being used, since you're not passing in "-GNinja" to cmake.
From macros.qt6:
%_qt6_build_tool ninja
%if "%_qt6_build_tool" == "ninja" \ -GNinja \\ %else \ -G"Unix Makefiles" \\ %endif \