be flexible on transformers version and skip test on version

requirements.txt

@@ -12,7 +12,7 @@ liger-kernel==0.5.5
 packaging==23.2
 
 peft==0.15.0
-transformers==4.51.0
+transformers>=4.50.3,<=4.51.0
 tokenizers>=0.21.1
 accelerate==1.6.0
 datasets==3.5.0

tests/e2e/multigpu/test_llama.py

@@ -7,9 +7,11 @@ import os
 from pathlib import Path
 
 import pytest
+import transformers
 import yaml
 from accelerate.test_utils import execute_subprocess_async
 from huggingface_hub import snapshot_download
+from packaging import version
 from transformers.testing_utils import get_torch_dist_unique_port
 
 from axolotl.utils.dict import DictDefault
@@ -28,6 +30,10 @@ def download_model():
     snapshot_download("HuggingFaceTB/SmolLM2-135M")
 
 
+def transformers_version_eq(required_version):
+    return version.parse(transformers.__version__) == version.parse(required_version)
+
+
 class TestMultiGPULlama:
     """
     Test case for Llama models using LoRA
@@ -612,8 +618,11 @@ class TestMultiGPULlama:
             temp_dir + "/runs", "train/train_loss", 2.3, "Train Loss is too high"
         )
 
-    @pytest.mark.skip(
-        reason="ds-zero3 broken in main until transformers#37281 resolved"
+    # TODO: remove skip once deepspeed regression is fixed
+    # see https://github.com/huggingface/transformers/pull/37324
+    @pytest.mark.skipif(
+        transformers_version_eq("4.51.0"),
+        reason="zero3 is not supported with transformers==4.51.0",
     )
     @pytest.mark.parametrize(
         "gradient_accumulation_steps",