jochen
3be6e86f77
assign read the whole mesh before its write, to record the seats held by derivation, and that read printed on standard error that the node did not resolve for lack of the seat the act was about to give it. The seat verb answers with both streams, so the stale line came last and named the assignment just made as its remedy. The reads inside an act no longer print 'left out' lines; the node's unmet seat dependencies and whether it resolves come from one planFor taken after the write, and every other machine from blockedElsewhere. unassign now says when its node does not resolve, from the same resolution.