tmp commit for nexus-gen edit

examples/flux/model_inference/Nexus-Gen-Editing.py

@@ -0,0 +1,34 @@
+import importlib
+import torch
+from PIL import Image
+from diffsynth.pipelines.flux_image_new import FluxImagePipeline, ModelConfig
+from modelscope import snapshot_download
+
+if importlib.util.find_spec("transformers") is None:
+    raise ImportError("You are using Nexus-GenV2. It depends on transformers, which is not installed. Please install it with `pip install transformers==4.49.0`.")
+else:
+    import transformers
+    assert transformers.__version__ == "4.49.0", "Nexus-GenV2 requires transformers==4.49.0, please install it with `pip install transformers==4.49.0`."
+
+snapshot_download("DiffSynth-Studio/Nexus-GenV2", local_dir="models/DiffSynth-Studio/Nexus-GenV2")
+pipe = FluxImagePipeline.from_pretrained(
+    torch_dtype=torch.bfloat16,
+    device="cuda",
+    model_configs=[
+        ModelConfig(model_id="DiffSynth-Studio/Nexus-GenV2", origin_file_pattern="model*.safetensors"),
+        ModelConfig(model_id="DiffSynth-Studio/Nexus-GenV2", origin_file_pattern="edit_decoder.bin"),
+        ModelConfig(model_id="black-forest-labs/FLUX.1-dev", origin_file_pattern="text_encoder/model.safetensors"),
+        ModelConfig(model_id="black-forest-labs/FLUX.1-dev", origin_file_pattern="text_encoder_2/"),
+        ModelConfig(model_id="black-forest-labs/FLUX.1-dev", origin_file_pattern="ae.safetensors"),
+    ],
+)
+
+prompt = "给猫加一副太阳镜"
+ref_image = Image.open("cat.png").convert("RGB")
+image = pipe(
+    prompt=prompt, negative_prompt="",
+    seed=0, cfg_scale=1.0, num_inference_steps=50,
+    nexus_gen_reference_image=ref_image,
+    height=512, width=512,
+)
+image.save("cat_glasses.jpg")