launch.py

import os
import subprocess
import threading
import gradio as gr

# -------------------------------
# 1️⃣ Install dependencies
# -------------------------------
subprocess.run(["pip", "install", "-r", "requirements.txt"])

# -------------------------------
# 2️⃣ Function to start WebUI
# -------------------------------
def start_webui():
    """Launch Automatic1111 WebUI in background thread."""
    # Set command-line args for WebUI
    os.environ["COMMANDLINE_ARGS"] = "--listen --xformers --enable-insecure-extension-access --medvram"

    # Launch WebUI
    subprocess.run(["python", "launch.py"])

# Run WebUI in a separate thread so Gradio stays alive
threading.Thread(target=start_webui, daemon=True).start()

# -------------------------------
# 3️⃣ Minimal Gradio interface
# -------------------------------
def status():
    return "✅ WebUI is running in the background."

# Gradio app — one output textbox to keep Space alive
with gr.Blocks() as demo:
    gr.Markdown("### Automatic1111 WebUI Launcher")
    gr.Button("Check status").click(status, outputs=[gr.Textbox()])

# -------------------------------
# 4️⃣ Launch Gradio (HF-friendly)
# -------------------------------
demo.launch(server_name="0.0.0.0", server_port=int(os.environ.get("PORT", 7860)))