? <machine-dataspace ?machine> [
    ; <require-service <daemon net_mapper>>
    ? <built net_mapper ?path ?sum> [
      <daemon net_mapper {
        argv: [$path]
        protocol: application/syndicate
        env: {
          BUILD_SUM: $sum
        }
      }>
    ]
    ? <service-object <daemon net_mapper> ?cap> [
      $cap { dataspace: $machine }
    ]

]