transformers

634500b9 - Fix FSDP2 and distributed checkpointing imports for older PyTorch versions (#46141)

Fix FSDP2 and distributed checkpointing imports for older PyTorch versions (#46141) * Fix PyTorch requirement for FSDP2 to >=2.6 * Fix PyTorch requirement for distributed checkpoint saving to >=2.7 --------- Co-authored-by: Ferdinand Mom <47445085+3outeille@users.noreply.github.com>