Maybe this might dovetail with the Slurm stuff somehow.
But, even a simple, hacky version of this is enough to test the waters to see how people feel about it–and then if people like the idea (being able to declare available resources in a builder, and then having some brains about job routing) we can sort out smarter/better implementations.
(Edit: yep, the PR explicitly mentions Slurm as an alternative.)
(Edit2: …it’s the same author. 
derp.)