transformers

41e5abac - FIX: Bug in PEFT integration delete_adapter method (#41252)

FIX: Bug in PEFT integration delete_adapter method (#41252) The main content of this PR is to fix a bug in the delete_adapter method of the PeftAdapterMixin. Previously, it did not take into account auxiliary modules from PEFT, e.g. those added by modules_to_save. This PR fixes this oversight. Note that the PR uses a new functionality from PEFT that exposes integration functions like delete_adapter. Those will be contained in the next PEFT release, 0.18.0 (yet unreleased). Therefore, the bug is only fixed when users have a PEFT version fullfilling this requirement. I ensured that with old PEFT versions, the integration still works the same as previously. The newly added test for this is skipped if the PEFT version is too low. (Note: I tested locally with that the test will pass with PEFT 0.18.0) While working on this, I also cleaned up the following: - The active_adapter property has been deprecated for more than 2 years (#26407). It is safe to remove it now. - There were numerous small errors or outdated pieces of information in the docstrings, which have been addressed. When PEFT < 0.18.0 is used, although we cannot delete modules_to_save, we can still detect them and warn about it.