The libX11-devel package contains libraries and header files for libX11.
acquired package info from repodata DB: repodata/bbb184c59d147ac8008bfc4e65cc222611fcbe5e39579873511151bfe6007f20-primary.sqlite.bz2
This package is the development files for libxkbfile.
Libxkbfile is used by the X servers and utilities to parse the XKB configuration data files.