FIX Prefix tuning after transformers PR 38635#2662
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BenjaminBossan merged 2 commits intohuggingface:mainfrom Jul 22, 2025
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Due to huggingface/transformers#38635, several tests involving prefix tuning broke: https://github.com/huggingface/peft/actions/runs/16417140904/job/46385751329 This PR fixes this by resoling two issues: 1. The _supports_cache_class attribute was removed, we can now assume that it is True if the attribute does not exist. 2. We had special handling of past_key_values for GPTBigCodeForCausalLM which is no longer required (nor valid) after that PR, so it is removed depending on the transformers version.
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BenjaminBossan
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Due to huggingface/transformers#38635, several tests involving prefix tuning broke: https://github.com/huggingface/peft/actions/runs/16417140904/job/46385751329 This PR fixes this by resoling two issues: 1. The _supports_cache_class attribute was removed, we can now assume that it is True if the attribute does not exist. 2. We had special handling of past_key_values for GPTBigCodeForCausalLM which is no longer required (nor valid) after that PR, so it is removed depending on the transformers version.
cyyever
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Due to huggingface/transformers#38635, several tests involving prefix tuning broke.
This PR fixes this by resolving two issues:
The
_supports_cache_classattribute was removed, we can now assume that it is True if the attribute does not exist.We had special handling of
past_key_valuesforGPTBigCodeForCausalLMwhich is no longer required (nor valid) after that PR, so it is removed depending on the transformers version.