The libX11-devel package contains libraries and header files for libX11.
acquired package info from repodata DB: repodata/21886cccbebfef01fd8c9ffbdf136561ce8b50eb1d8516669acd0fe126920766-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.