Description of problem: Package paraview fails to build from source in Fedora rawhide. Version-Release number of selected component (if applicable): 5.8.1-5.fc34 Steps to Reproduce: koji build --scratch f34 paraview-5.8.1-5.fc34.src.rpm Additional info: This package is tracked by Koschei. See: https://koschei.fedoraproject.org/package/paraview -- Could NOT find Python3 (missing: Python3_LIBRARIES Python3_INCLUDE_DIRS Development) (Required is at least version "3.2") CMake Error at VTK/CMake/vtkModule.cmake:4112 (message): Could not find the Python3 external dependency. Call Stack (most recent call first): VTK/Utilities/Python/CMakeLists.txt:44 (vtk_module_find_package)