{ "":
  { "type": "export"
  , "target": "_"
  , "doc": ["A glorified hello-world example"]
  , "flexible_config": ["NAME"]
  , "config_doc": {"NAME": ["The name to say hello to"]}
  }
, "_":
  { "type": "generic"
  , "arguments_config": ["NAME"]
  , "outs": ["greeting.txt"]
  , "cmds":
    [ { "type": "join"
      , "$1":
        [ { "type": "join_cmd"
          , "$1":
            [ "echo"
            , "Hello"
            , {"type": "var", "name": "NAME", "default": "world"}
            ]
          }
        , " > greeting.txt"
        ]
      }
    ]
  }
}