/usr/include/ukwm/meta/ is in libukwm-1-dev 1.1.8-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ukwm/meta/barrier.h
/usr/include/ukwm/meta/boxes.h
/usr/include/ukwm/meta/common.h
/usr/include/ukwm/meta/compositor-ukwm.h
/usr/include/ukwm/meta/compositor.h
/usr/include/ukwm/meta/display.h
/usr/include/ukwm/meta/errors.h
/usr/include/ukwm/meta/group.h
/usr/include/ukwm/meta/keybindings.h
/usr/include/ukwm/meta/main.h
/usr/include/ukwm/meta/meta-backend.h
/usr/include/ukwm/meta/meta-background-actor.h
/usr/include/ukwm/meta/meta-background-group.h
/usr/include/ukwm/meta/meta-background-image.h
/usr/include/ukwm/meta/meta-background.h
/usr/include/ukwm/meta/meta-close-dialog.h
/usr/include/ukwm/meta/meta-cursor-tracker.h
/usr/include/ukwm/meta/meta-dnd.h
/usr/include/ukwm/meta/meta-enum-types.h
/usr/include/ukwm/meta/meta-idle-monitor.h
/usr/include/ukwm/meta/meta-inhibit-shortcuts-dialog.h
/usr/include/ukwm/meta/meta-monitor-manager.h
/usr/include/ukwm/meta/meta-plugin.h
/usr/include/ukwm/meta/meta-settings.h
/usr/include/ukwm/meta/meta-shadow-factory.h
/usr/include/ukwm/meta/meta-shaped-texture.h
/usr/include/ukwm/meta/meta-version.h
/usr/include/ukwm/meta/meta-window-actor.h
/usr/include/ukwm/meta/meta-window-shape.h
/usr/include/ukwm/meta/prefs.h
/usr/include/ukwm/meta/screen.h
/usr/include/ukwm/meta/theme.h
/usr/include/ukwm/meta/types.h
/usr/include/ukwm/meta/util.h
/usr/include/ukwm/meta/window.h
/usr/include/ukwm/meta/workspace.h