Install latest prerelease from huggingface_hub when installing transformers from main

.github/workflows/pr_modular_tests.yml

@@ -110,9 +110,8 @@ jobs:
       run: |
         python -m venv /opt/venv && export PATH="/opt/venv/bin:$PATH"
         python -m uv pip install -e [quality,test]
-        # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-        # pip uninstall transformers -y && python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
-        # pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
+        pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
+        pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
 
     - name: Environment
       run: |

.github/workflows/pr_tests.yml

@@ -116,9 +116,8 @@ jobs:
       run: |
         python -m venv /opt/venv && export PATH="/opt/venv/bin:$PATH"
         python -m uv pip install -e [quality,test]
-        # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-        # pip uninstall transformers -y && python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
-        # pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
+        pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
+        pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
 
     - name: Environment
       run: |
@@ -254,10 +253,9 @@ jobs:
         python -m uv pip install -e [quality,test]
         # TODO (sayakpaul, DN6): revisit `--no-deps`
         python -m pip install -U peft@git+https://github.com/huggingface/peft.git --no-deps
-        # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-        # python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
-        # python -m uv pip install -U tokenizers
-        # pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
+        python -m uv pip install -U tokenizers
+        pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git --no-deps
+        pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
 
     - name: Environment
       run: |

.github/workflows/pr_tests_gpu.yml

@@ -132,9 +132,8 @@ jobs:
         run: |
           python -m venv /opt/venv && export PATH="/opt/venv/bin:$PATH"
           python -m uv pip install -e [quality,test]
-          # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-          # pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git
-          # pip uninstall transformers -y && python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
+          pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git
+          pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
 
       - name: Environment
         run: |
@@ -204,9 +203,8 @@ jobs:
         python -m venv /opt/venv && export PATH="/opt/venv/bin:$PATH"
         python -m uv pip install -e [quality,test]
         python -m uv pip install peft@git+https://github.com/huggingface/peft.git
-        # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-        # pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git
-        # pip uninstall transformers -y && python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
+        pip uninstall accelerate -y && python -m uv pip install -U accelerate@git+https://github.com/huggingface/accelerate.git
+        pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
 
     - name: Environment
       run: |
@@ -268,8 +266,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m venv /opt/venv && export PATH="/opt/venv/bin:$PATH"
-        # Stopping this update temporarily until the Hub RC is fully shipped and integrated.
-        # pip uninstall transformers -y && python -m uv pip install -U transformers@git+https://github.com/huggingface/transformers.git --no-deps
+        pip uninstall transformers -y && pip uninstall huggingface_hub -y && python -m uv pip install --prerelease allow -U transformers@git+https://github.com/huggingface/transformers.git
         python -m uv pip install -e [quality,test,training]
 
     - name: Environment

tests/models/test_modeling_common.py

@@ -243,8 +243,8 @@ def load_model(path):
             else:
                 _ = load_model(repo_id)
 
-        warning_message = str(warning.warnings[0].message)
-        self.assertIn("This serialization format is now deprecated to standardize the serialization", warning_message)
+        warning_messages = " ".join(str(w.message) for w in warning.warnings)
+        self.assertIn("This serialization format is now deprecated to standardize the serialization", warning_messages)
 
     # Local tests are already covered down below.
     @parameterized.expand(
@@ -298,11 +298,13 @@ def test_local_files_only_with_sharded_checkpoint(self):
             raise_for_status=mock.Mock(side_effect=HfHubHTTPError("Server down", response=mock.Mock())),
             json=mock.Mock(return_value={}),
         )
+        client_mock = mock.Mock()
+        client_mock.get.return_value = error_response
 
         with tempfile.TemporaryDirectory() as tmpdir:
             model = FluxTransformer2DModel.from_pretrained(repo_id, subfolder="transformer", cache_dir=tmpdir)
 
-            with mock.patch("requests.Session.get", return_value=error_response):
+            with mock.patch("huggingface_hub.hf_api.get_session", return_value=client_mock):
                 # Should fail with local_files_only=False (network required)
                 # We would make a network call with model_info
                 with self.assertRaises(OSError):