app.py

import gradio as gr
import subprocess

def synthesize_text(text):
    # Replace 'piper_cli_script.py' with the path to your Piper CLI script
    command = ['python', '/piper/__main__.py', '--model', 'https://huggingface.co/rhasspy/piper-voices/blob/v1.0.0/en/en_GB/alan/medium/en_GB-alan-medium.onnx', '--text', text]
    result = subprocess.run(command, capture_output=True, text=True)
    # Handle result and output file path
    return '/path_to_output_audio.wav'

iface = gr.Interface(
    fn=synthesize_text,
    inputs="text",
    outputs="audio"
)

iface.launch()