Install pre-built causal-conv1d wheel at startup for fast inference path

app.py

@@ -1,4 +1,17 @@
 import os
+import subprocess
+import sys
+
+# Install pre-built causal-conv1d wheel (compiled on L4 GPU, can't compile in Space build)
+try:
+    import causal_conv1d
+except ImportError:
+    subprocess.run([
+        sys.executable, "-m", "pip", "install",
+        "https://huggingface.co/datasets/victor/misc/resolve/main/wheels/causal_conv1d-1.6.1-cp310-cp310-linux_x86_64.whl",
+        "--no-deps", "-q",
+    ], check=True)
+
 import spaces
 import gradio as gr
 import torch