fix: Optimize dependencies and Dockerfile for HF Spaces build

- Simplify requirements.txt to avoid dependency conflicts
- Use staged Docker builds for better reliability
- Install PyTorch CPU version first, then TTS library
- Add git dependency for TTS model downloads
- Use Python 3.10 for better compatibility

Dockerfile

@@ -1,28 +1,34 @@
-FROM python:3.9-slim
+FROM python:3.10-slim
 
 # Set working directory
 WORKDIR /app
 
-# Install system dependencies
+# Install system dependencies required for audio processing
 RUN apt-get update && apt-get install -y \
     build-essential \
-    libsndfile1 \
+    libsndfile1-dev \
     ffmpeg \
+    git \
+    wget \
+    && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy requirements and install Python dependencies
+# Upgrade pip and install wheel
+RUN pip install --upgrade pip setuptools wheel
+
+# Copy requirements first for better caching
 COPY requirements.txt .
+
+# Install Python dependencies with more robust approach
+RUN pip install --no-cache-dir torch torchaudio --index-url https://download.pytorch.org/whl/cpu
+RUN pip install --no-cache-dir TTS==0.22.0
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code
 COPY . .
 
-# Expose port
+# Expose port for Hugging Face Spaces
 EXPOSE 7860
 
-# Set environment variables
-ENV GRADIO_SERVER_NAME="0.0.0.0"
-ENV GRADIO_SERVER_PORT="7860"
-
 # Run the application
 CMD ["python", "app.py"]

requirements.txt

@@ -2,26 +2,14 @@
 fastapi==0.104.1
 uvicorn[standard]==0.24.0
 
-# Text-to-Speech engine
-coqui-tts==0.21.1
-
 # File handling and HTTP
 python-multipart==0.0.6
-python-dateutil==2.8.2
-
-# Audio processing dependencies (required by Coqui TTS)
-numpy==1.24.3
-scipy==1.11.4
-librosa==0.10.1
-soundfile==0.12.1
-
-# Machine learning dependencies
-torch==2.0.1
-torchaudio==2.0.2
 
-# Hugging Face integration
-transformers==4.35.2
+# Audio processing dependencies
+numpy>=1.21.0
+scipy>=1.7.0
+librosa>=0.9.0
+soundfile>=0.12.0
 
-# Utilities
-pydantic==2.5.0
-typing-extensions==4.8.0
+# Essential utilities
+pydantic>=2.0.0