? <machine-dataspace ?machine> [
  $machine ? <Observe <rec rtt _>_> [
    $config <require-service <daemon net_mapper>>
    $config ? <service-object <daemon net_mapper> ?cap> [
      $cap { dataspace: $machine }
    ]
  ]
]

? <socketspace ?socketspace> [
  $socketspace ? <Observe <rec rtt _>_> [
    $config <require-service <daemon net_mapper>>
    $config ? <service-object <daemon net_mapper> ?cap> [
      $cap { dataspace: $socketspace }
    ]
  ]
]

? <built net_mapper ?path ?sum> [
  <daemon net_mapper {
    argv: ["/home/emery/src/bin/net_mapper"]
    protocol: application/syndicate
    env: {
      BUILD_SUM: $sum
    }
  }>
]