The environment and shell contributions were written nowhere on a node without their holder;
they now derive a dependency on node-environment, node-login-shell or node-display-server, met
and refused as ADR 0207's are. Two modules declaring one package, path or unit made the node
unresolvable after the assignment was recorded; that is refused first now, because no later
assignment can complete it.
status reported no unmet dependency on any node once systemd, pacman and docker
were assigned to all four (to-be 42), which is the condition ADR 0207 set for the
switch. A dependency no catalogue module could meet stays a report before and
after the switch, as assign already said it: there is no remedy to name.
Seed node-package-manager and node-container-runtime. Derive each module's
dependencies from its declared service, package and container resources;
judge them over the node's whole set, exempting the foundation. Refuse at
assign (several modules may go on as one act) and at unassign of the last
holder; report at composition in status, behind one switch.
jochen