Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
cmake(FunctionalPlus)
cmake(functionalplus)
functionalplus-devel
functionalplus-static

Requires :

cmake-filesystem
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsZstd) <= 5.4.18-1

Content of RPM :
/usr/include/fplus
/usr/include/fplus/benchmark_session.hpp
/usr/include/fplus/compare.hpp
/usr/include/fplus/composition.hpp
/usr/include/fplus/container_common.hpp
/usr/include/fplus/container_properties.hpp
/usr/include/fplus/container_traits.hpp
/usr/include/fplus/curry.hpp
/usr/include/fplus/curry_instances.autogenerated_defines
/usr/include/fplus/extrapolate.hpp
/usr/include/fplus/filter.hpp
/usr/include/fplus/fplus.hpp
/usr/include/fplus/function_traits.hpp
/usr/include/fplus/fwd.hpp
/usr/include/fplus/fwd_instances.autogenerated_defines
/usr/include/fplus/generate.hpp
/usr/include/fplus/internal
/usr/include/fplus/internal/apply.hpp
/usr/include/fplus/internal/asserts
/usr/include/fplus/internal/asserts/composition.hpp
/usr/include/fplus/internal/asserts/functions.hpp
/usr/include/fplus/internal/asserts/pairs.hpp
/usr/include/fplus/internal/compare.hpp
/usr/include/fplus/internal/composition.hpp
/usr/include/fplus/internal/container_common.hpp
/usr/include/fplus/internal/function_traits_asserts.hpp
/usr/include/fplus/internal/invoke.hpp
/usr/include/fplus/internal/meta.hpp
/usr/include/fplus/internal/split.hpp
/usr/include/fplus/interpolate.hpp
There is 30 files more in these RPM.