fix auto pipeline lazy import

src/diffusers/pipelines/auto_pipeline.py

@@ -17,7 +17,20 @@ import inspect
 from collections import OrderedDict
 
 from ..configuration_utils import ConfigMixin
-from ..utils import DIFFUSERS_CACHE
+from ..utils import (
+    DIFFUSERS_CACHE,
+    OptionalDependencyNotAvailable,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+try:
+    if not (is_torch_available() and is_transformers_available()):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ..utils.dummy_torch_and_transformers_objects import *  # noqa F403
+else:
     from .controlnet import (
         StableDiffusionControlNetImg2ImgPipeline,
         StableDiffusionControlNetInpaintPipeline,
@@ -25,7 +38,11 @@ from .controlnet import (
         StableDiffusionXLControlNetImg2ImgPipeline,
         StableDiffusionXLControlNetPipeline,
     )
-from .deepfloyd_if import IFImg2ImgPipeline, IFInpaintingPipeline, IFPipeline
+    from .deepfloyd_if import (
+        IFImg2ImgPipeline,
+        IFInpaintingPipeline,
+        IFPipeline,
+    )
     from .kandinsky import (
         KandinskyCombinedPipeline,
         KandinskyImg2ImgCombinedPipeline,
@@ -52,7 +69,10 @@ from .stable_diffusion_xl import (
         StableDiffusionXLInpaintPipeline,
         StableDiffusionXLPipeline,
     )
-from .wuerstchen import WuerstchenCombinedPipeline, WuerstchenDecoderPipeline
+    from .wuerstchen import (
+        WuerstchenCombinedPipeline,
+        WuerstchenDecoderPipeline,
+    )
 
 
 AUTO_TEXT2IMAGE_PIPELINES_MAPPING = OrderedDict(