[Misc] Make gradio an optional dependency and upgrade to >=6.7.0 (#2221)

Signed-off-by: Lidang-Jiang <lidangjiang@gmail.com>
Signed-off-by: Lidang Jiang <lidangjiang@gmail.com>

examples/offline_inference/text_to_image/gradio_demo.py

@@ -1,7 +1,10 @@
 import argparse
 from functools import lru_cache
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import torch
 
 from vllm_omni.entrypoints.omni import Omni

examples/online_serving/fish_speech/gradio_demo.py

@@ -16,7 +16,10 @@ import argparse
 import base64
 import io
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import httpx
 import numpy as np
 import soundfile as sf

examples/online_serving/image_to_image/gradio_demo.py

@@ -10,7 +10,10 @@ import argparse
 import base64
 from io import BytesIO
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import requests
 from PIL import Image
 

examples/online_serving/qwen2_5_omni/gradio_demo.py

@@ -6,7 +6,10 @@ import random
 from pathlib import Path
 from typing import Any
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import numpy as np
 import soundfile as sf
 import torch

examples/online_serving/qwen3_omni/gradio_demo.py

@@ -6,7 +6,10 @@ import random
 from pathlib import Path
 from typing import Any
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import numpy as np
 import soundfile as sf
 import torch

examples/online_serving/qwen3_tts/gradio_demo.py

@@ -24,7 +24,10 @@ import io
 import json
 import logging
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import httpx
 import numpy as np
 import soundfile as sf

examples/online_serving/qwen3_tts/tts_common.py

@@ -3,7 +3,10 @@
 import base64
 import io
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import httpx
 import numpy as np
 import soundfile as sf

examples/online_serving/text_to_image/gradio_demo.py

@@ -10,7 +10,10 @@ import argparse
 import base64
 from io import BytesIO
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import requests
 from PIL import Image
 

examples/online_serving/voxtral_tts/gradio_demo.py

@@ -20,7 +20,10 @@ from datetime import datetime
 from pathlib import Path
 from typing import Any
 
-import gradio as gr
+try:
+    import gradio as gr
+except ImportError:
+    raise ImportError("gradio is required to run this demo. Install it with: pip install 'vllm-omni[demo]'") from None
 import httpx
 import numpy as np
 import soundfile as sf