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

Provides :
cmake(xtl)
pkgconfig(xtl)
xtl-devel
xtl-devel(x86-32)
xtl-static

Requires :

/usr/bin/pkg-config
cmake-filesystem
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/xtl
/usr/include/xtl/xany.hpp
/usr/include/xtl/xbase64.hpp
/usr/include/xtl/xbasic_fixed_string.hpp
/usr/include/xtl/xclosure.hpp
/usr/include/xtl/xcompare.hpp
/usr/include/xtl/xcomplex.hpp
/usr/include/xtl/xcomplex_sequence.hpp
/usr/include/xtl/xdynamic_bitset.hpp
/usr/include/xtl/xfunctional.hpp
/usr/include/xtl/xhalf_float.hpp
/usr/include/xtl/xhalf_float_impl.hpp
/usr/include/xtl/xhash.hpp
/usr/include/xtl/xhierarchy_generator.hpp
/usr/include/xtl/xiterator_base.hpp
/usr/include/xtl/xjson.hpp
/usr/include/xtl/xmasked_value.hpp
/usr/include/xtl/xmasked_value_meta.hpp
/usr/include/xtl/xmeta_utils.hpp
/usr/include/xtl/xmultimethods.hpp
/usr/include/xtl/xoptional.hpp
/usr/include/xtl/xoptional_meta.hpp
/usr/include/xtl/xoptional_sequence.hpp
/usr/include/xtl/xplatform.hpp
/usr/include/xtl/xproxy_wrapper.hpp
/usr/include/xtl/xsequence.hpp
/usr/include/xtl/xspan.hpp
/usr/include/xtl/xspan_impl.hpp
/usr/include/xtl/xsystem.hpp
/usr/include/xtl/xtl_config.hpp
There is 13 files more in these RPM.