[Refactor] move k diffusion out of stable_diffusion (#6267)

move k diffusion out of stable_diffusion

src/diffusers/pipelines/__init__.py

@@ -268,7 +268,7 @@ except OptionalDependencyNotAvailable:
 
     _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
 else:
-    _import_structure["stable_diffusion"].extend(["StableDiffusionKDiffusionPipeline"])
+    _import_structure["stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
 try:
     if not is_flax_available():
         raise OptionalDependencyNotAvailable()
@@ -498,7 +498,7 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
         except OptionalDependencyNotAvailable:
             from ..utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
         else:
-            from .stable_diffusion import StableDiffusionKDiffusionPipeline
+            from .stable_diffusion_k_diffusion import StableDiffusionKDiffusionPipeline
 
         try:
             if not is_flax_available():

src/diffusers/pipelines/stable_diffusion/__init__.py

@@ -79,22 +79,7 @@ except OptionalDependencyNotAvailable:
 else:
     _import_structure["pipeline_stable_diffusion_depth2img"] = ["StableDiffusionDepth2ImgPipeline"]
     _import_structure["pipeline_stable_diffusion_pix2pix_zero"] = ["StableDiffusionPix2PixZeroPipeline"]
-try:
-    if not (
-        is_torch_available()
-        and is_transformers_available()
-        and is_k_diffusion_available()
-        and is_k_diffusion_version(">=", "0.0.12")
-    ):
-        raise OptionalDependencyNotAvailable()
-except OptionalDependencyNotAvailable:
-    from ...utils import (
-        dummy_torch_and_transformers_and_k_diffusion_objects,
-    )
 
-    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
-else:
-    _import_structure["pipeline_stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
 try:
     if not (is_transformers_available() and is_onnx_available()):
         raise OptionalDependencyNotAvailable()
@@ -185,21 +170,6 @@ if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
             StableDiffusionDepth2ImgPipeline,
         )
 
-    try:
-        if not (
-            is_torch_available()
-            and is_transformers_available()
-            and is_k_diffusion_available()
-            and is_k_diffusion_version(">=", "0.0.12")
-        ):
-            raise OptionalDependencyNotAvailable()
-    except OptionalDependencyNotAvailable:
-        from ...utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
-    else:
-        from .pipeline_stable_diffusion_k_diffusion import (
-            StableDiffusionKDiffusionPipeline,
-        )
-
     try:
         if not (is_transformers_available() and is_onnx_available()):
             raise OptionalDependencyNotAvailable()

src/diffusers/pipelines/stable_diffusion_k_diffusion/__init__.py

+from typing import TYPE_CHECKING
+
+from ...utils import (
+    DIFFUSERS_SLOW_IMPORT,
+    OptionalDependencyNotAvailable,
+    _LazyModule,
+    get_objects_from_module,
+    is_k_diffusion_available,
+    is_k_diffusion_version,
+    is_torch_available,
+    is_transformers_available,
+)
+
+
+_dummy_objects = {}
+_import_structure = {}
+
+
+try:
+    if not (
+        is_transformers_available()
+        and is_torch_available()
+        and is_k_diffusion_available()
+        and is_k_diffusion_version(">=", "0.0.12")
+    ):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils import dummy_torch_and_transformers_and_k_diffusion_objects  # noqa F403
+
+    _dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_and_k_diffusion_objects))
+else:
+    _import_structure["pipeline_stable_diffusion_k_diffusion"] = ["StableDiffusionKDiffusionPipeline"]
+
+if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
+    try:
+        if not (
+            is_transformers_available()
+            and is_torch_available()
+            and is_k_diffusion_available()
+            and is_k_diffusion_version(">=", "0.0.12")
+        ):
+            raise OptionalDependencyNotAvailable()
+
+    except OptionalDependencyNotAvailable:
+        from ...utils.dummy_torch_and_transformers_and_k_diffusion_objects import *
+    else:
+        from .pipeline_stable_diffusion_k_diffusion import StableDiffusionKDiffusionPipeline
+
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(
+        __name__,
+        globals()["__file__"],
+        _import_structure,
+        module_spec=__spec__,
+    )
+
+    for name, value in _dummy_objects.items():
+        setattr(sys.modules[__name__], name, value)

src/diffusers/pipelines/stable_diffusion/pipeline_stable_diffusion_k_diffusion.py → src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_k_diffusion.py

@@ -27,7 +27,7 @@ from ...schedulers import LMSDiscreteScheduler
 from ...utils import USE_PEFT_BACKEND, deprecate, logging, scale_lora_layers, unscale_lora_layers
 from ...utils.torch_utils import randn_tensor
 from ..pipeline_utils import DiffusionPipeline
-from . import StableDiffusionPipelineOutput
+from ..stable_diffusion import StableDiffusionPipelineOutput
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name