Eleven node seats; a display as a provision with the machine's reach; other
modules' lines through the tool's own drop-in directory or ADR 0204's slots,
now also for xinitrc and xresources; the display server's module writes the
session's start.
A service needs node-service-manager held on its node, a package
node-package-manager, a container node-container-runtime: derived from the
resources, never stated; refused at assign, reported at composition until the
three holders are on every node. Glossary: depends on a seat; nothing claims a
package.