hf-transfer is declared in pyproject.toml but never activated: nothing in
the codebase sets HF_HUB_ENABLE_HF_TRANSFER, and downloads go through
from_pretrained / hf_hub_download with no transfer toggle. huggingface-hub
is pinned ~=1.7, where Xet is the default transfer backend, so hf-transfer
is dead weight and only surfaces a deprecation warning.
A dataset path that points to a plain file is now read as one prompt per
line, with empty lines ignored. For text files, "column" is ignored and
"split" is optional; when given, it selects a subset of lines using slice
notation (e.g. "[:400]").
Detection uses os.path.isfile so files without an extension also work. The
split-parsing logic is factored into a shared get_split_slice helper, which
derives the split name from the specification, and split/column are now
optional in DatasetSpecification, with the dataset branches raising a clear
error when either is missing. An invalid split raises instead of being
silently ignored.
A bare slice does not parse with the pinned datasets version, since
ReadInstruction.from_spec expects a named split, so the text branch prepends
a synthetic split name.
Revives the approach from #103.
Closes#98.
Co-authored-by: Ric <ricyoung@gmail.com>
Rocker Zhang
