{ "":
  {"type": "export", "target": "multiple, upper", "flexible_config": ["DATA"]}
, "blob":
  { "type": "file_gen"
  , "arguments_config": ["DATA"]
  , "name": "data.orig"
  , "data": {"type": "var", "name": "DATA"}
  }
, "multiple":
  { "type": "generic"
  , "outs": ["data.tripple"]
  , "cmds": ["cat data.orig data.orig data.orig > data.tripple"]
  , "deps": ["blob"]
  }
, "multiple, upper":
  { "type": "generic"
  , "outs": ["data.txt"]
  , "cmds": ["cat data.tripple | tr a-z A-Z > data.txt"]
  , "deps": ["multiple"]
  }
}