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

Provides :
libixion-devel
libixion-devel(x86-64)
pkgconfig(libixion-0.20)

Requires :

/usr/bin/pkg-config
libixion(x86-64) = 0.20.0-2.fc43
libixion-0.20.so.0()(64bit)
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/libixion-0.20
/usr/include/libixion-0.20/ixion
/usr/include/libixion-0.20/ixion/address.hpp
/usr/include/libixion-0.20/ixion/address_iterator.hpp
/usr/include/libixion-0.20/ixion/cell.hpp
/usr/include/libixion-0.20/ixion/cell_access.hpp
/usr/include/libixion-0.20/ixion/compute_engine.hpp
/usr/include/libixion-0.20/ixion/config.hpp
/usr/include/libixion-0.20/ixion/dirty_cell_tracker.hpp
/usr/include/libixion-0.20/ixion/document.hpp
/usr/include/libixion-0.20/ixion/env.hpp
/usr/include/libixion-0.20/ixion/exceptions.hpp
/usr/include/libixion-0.20/ixion/formula.hpp
/usr/include/libixion-0.20/ixion/formula_function_opcode.hpp
/usr/include/libixion-0.20/ixion/formula_name_resolver.hpp
/usr/include/libixion-0.20/ixion/formula_opcode.hpp
/usr/include/libixion-0.20/ixion/formula_result.hpp
/usr/include/libixion-0.20/ixion/formula_tokens.hpp
/usr/include/libixion-0.20/ixion/formula_tokens_fwd.hpp
/usr/include/libixion-0.20/ixion/global.hpp
/usr/include/libixion-0.20/ixion/info.hpp
/usr/include/libixion-0.20/ixion/interface
/usr/include/libixion-0.20/ixion/interface/session_handler.hpp
/usr/include/libixion-0.20/ixion/interface/table_handler.hpp
/usr/include/libixion-0.20/ixion/matrix.hpp
/usr/include/libixion-0.20/ixion/model_context.hpp
/usr/include/libixion-0.20/ixion/model_iterator.hpp
/usr/include/libixion-0.20/ixion/module.hpp
/usr/include/libixion-0.20/ixion/named_expressions_iterator.hpp
/usr/include/libixion-0.20/ixion/table.hpp
There is 3 files more in these RPM.