[ernie-image] use concrete Mistral3Model / Ministral3ForCausalLM types

src/diffusers/modular_pipelines/ernie_image/encoders.py

@@ -15,16 +15,23 @@
 import json
 
 import torch
-from transformers import AutoModel, AutoModelForCausalLM, AutoTokenizer
+from transformers import AutoTokenizer, Mistral3Model
 
 from ...configuration_utils import FrozenDict
 from ...guiders import ClassifierFreeGuidance
 from ...utils import logging
+from ...utils.import_utils import is_transformers_version
 from ..modular_pipeline import ModularPipelineBlocks, PipelineState
 from ..modular_pipeline_utils import ComponentSpec, InputParam, OutputParam
 from .modular_pipeline import ErnieImageModularPipeline
 
 
+if is_transformers_version("<", "5.0.0"):
+    raise ImportError("`ErnieImageModularPipeline` requires `transformers>=5.0.0` for `Ministral3ForCausalLM`.")
+
+from transformers import Ministral3ForCausalLM  # noqa: E402
+
+
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name
 
 
@@ -38,7 +45,7 @@ def description(self) -> str:
     @property
     def expected_components(self) -> list[ComponentSpec]:
         return [
-            ComponentSpec("pe", AutoModelForCausalLM),
+            ComponentSpec("pe", Ministral3ForCausalLM),
             ComponentSpec("pe_tokenizer", AutoTokenizer),
         ]
 
@@ -83,7 +90,7 @@ def intermediate_outputs(self) -> list[OutputParam]:
 
     @staticmethod
     def _enhance_prompt(
-        pe: AutoModelForCausalLM,
+        pe: Ministral3ForCausalLM,
         pe_tokenizer: AutoTokenizer,
         prompt: str,
         device: torch.device,
@@ -160,7 +167,7 @@ def description(self) -> str:
     @property
     def expected_components(self) -> list[ComponentSpec]:
         return [
-            ComponentSpec("text_encoder", AutoModel),
+            ComponentSpec("text_encoder", Mistral3Model),
             ComponentSpec("tokenizer", AutoTokenizer),
             ComponentSpec(
                 "guider",
@@ -200,7 +207,7 @@ def intermediate_outputs(self) -> list[OutputParam]:
 
     @staticmethod
     def _encode(
-        text_encoder: AutoModel,
+        text_encoder: Mistral3Model,
         tokenizer: AutoTokenizer,
         prompt: list[str],
         device: torch.device,

src/diffusers/pipelines/ernie_image/pipeline_ernie_image.py

@@ -20,18 +20,25 @@
 from typing import Callable, List, Optional, Union
 
 import torch
-from transformers import AutoModel, AutoModelForCausalLM, AutoTokenizer
+from transformers import AutoTokenizer, Mistral3Model
 
 from ...image_processor import VaeImageProcessor
 from ...loaders import ErnieImageLoraLoaderMixin
 from ...models import AutoencoderKLFlux2
 from ...models.transformers import ErnieImageTransformer2DModel
 from ...pipelines.pipeline_utils import DiffusionPipeline
 from ...schedulers import FlowMatchEulerDiscreteScheduler
+from ...utils.import_utils import is_transformers_version
 from ...utils.torch_utils import randn_tensor
 from .pipeline_output import ErnieImagePipelineOutput
 
 
+if is_transformers_version("<", "5.0.0"):
+    raise ImportError("`ErnieImagePipeline` requires `transformers>=5.0.0` for `Ministral3ForCausalLM`.")
+
+from transformers import Ministral3ForCausalLM  # noqa: E402
+
+
 class ErnieImagePipeline(DiffusionPipeline, ErnieImageLoraLoaderMixin):
     """
     Pipeline for text-to-image generation using ErnieImageTransformer2DModel.
@@ -52,10 +59,10 @@ def __init__(
         self,
         transformer: ErnieImageTransformer2DModel,
         vae: AutoencoderKLFlux2,
-        text_encoder: AutoModel,
+        text_encoder: Mistral3Model,
         tokenizer: AutoTokenizer,
         scheduler: FlowMatchEulerDiscreteScheduler,
-        pe: Optional[AutoModelForCausalLM] = None,
+        pe: Optional[Ministral3ForCausalLM] = None,
         pe_tokenizer: Optional[AutoTokenizer] = None,
     ):
         super().__init__()