{ "defaults":
  { "type": "defaults"
  , "sh": ["shell-busybox/bin/sh"]
  , "toolchain": ["shell-busybox"]
  , "bin dirs":
    [ "shell-busybox/bin"
    , "shell-busybox/sbin"
    , "shell-busybox/usr/bin"
    , "shell-busybox/usr/sbin"
    ]
  }
, "shell-busybox":
  { "type": "install"
  , "dirs": [[["@", "busybox", "", "busybox"], "shell-busybox"]]
  }
}