FWL_DATA |
Root of the writable data tree. Required unless an explicit data_root is passed in code or --data-root on the CLI; there is no silent default location. |
FWL_DATA_CACHE |
Optional read-only, pre-populated copy of the tree (for example a group share on a cluster). Consulted before any download, verified by checksum, never written to. Ignored when the directory does not exist. |
FWL_IO_OFFLINE |
Set to 1 (or true, yes, on) to forbid all network access. Missing or corrupt files then raise an error naming the file and the resolved data root. |