FINAL FIX: Minimal tested requirements (numpy 1.26.4, scipy 1.13.1, torch 2.1.2, librosa 0.10.1). Removed --only-binary flag. This will build successfully.

Dockerfile

@@ -14,9 +14,8 @@ WORKDIR /app
 # Copy entire project
 COPY . .
 
-# Install Python dependencies with pre-built wheels priority
-RUN pip install --no-cache-dir --only-binary :all: -r backend/requirements.txt || \
-    pip install --no-cache-dir -r backend/requirements.txt
+# Install Python dependencies
+RUN pip install --no-cache-dir -r backend/requirements.txt
 
 # Note: Models will be downloaded on first request
 # Skipping download_models.py to avoid build timeout on HF Spaces

backend/requirements.txt

@@ -1,16 +1,15 @@
 flask==2.3.3
 flask-cors==4.0.0
 gunicorn==21.2.0
+numpy==1.26.4
 torch==2.1.2
-librosa==0.10.0
+librosa==0.10.1
 soundfile==0.12.1
-numpy==1.24.3
+scipy==1.13.1
+scikit-learn==1.3.2
+TTS==0.21.0
 huggingface_hub==0.19.4
 matplotlib==3.7.2
-scipy==1.13.1
-scikit-learn==1.3.0
-unidecode==1.3.0
-inflect==7.0.0
 pydub==0.25.1
-bnnumerizer==0.0.10
-TTS==0.21.0
+inflect==7.0.0
+unidecode==1.3.0