Search notes:

/usr/share/X11/xkb

/usr/share/X11/xkb contains configuration files for XKB in text format.

This directory seems to hold components for an XKB keymap.

apt package

The APT package for this directory seems to be xdb-data:

sudo apt-get install xdb-data

See also

/usr/share/X11/xkb/compat,

/usr/share/X11/xkb/compiled stores the compiled version of the current keymap and/or any scratch keymaps used by clients.

/usr/share/X11/xkb/geometry,

/usr/share/X11/kdb/keycodes,

/usr/share/X11/xkb/rules,

/usr/share/X11/xkb/symbols,

/usr/share/X11/xkb/types

X keyboard extension