Fix Real-ESRGAN runtime installation

app.py

@@ -15,8 +15,23 @@ from diffusers import (
     UniPCMultistepScheduler,
 )
 
+import importlib.util
 import subprocess
-subprocess.run("pip install git+https://github.com/inference-sh/Real-ESRGAN.git --no-deps", shell=True)
+import sys
+
+if importlib.util.find_spec("RealESRGAN") is None:
+    subprocess.run(
+        [
+            sys.executable,
+            "-m",
+            "pip",
+            "install",
+            "git+https://github.com/inference-sh/Real-ESRGAN.git",
+            "--no-deps",
+            "--no-build-isolation",
+        ],
+        check=True,
+    )
 
 from diffusers.models.attention_processor import AttnProcessor2_0
 import gradio as gr
@@ -333,4 +348,4 @@ with gr.Blocks(theme='bethecloud/storj_theme') as demo:
         outputs=[output_gallery, seed_used, full_positive_prompt_used, full_negative_prompt_used]
     )
 
-demo.launch(debug=True)
+demo.launch(debug=True)

requirements.txt

@@ -1,4 +1,5 @@
 torch
+setuptools<81
 accelerate==0.27.2
 gradio
 invisible-watermark==0.2.0
@@ -13,4 +14,4 @@ sentencepiece
 transformers==4.49.0
 einops
 diffusers
-pydantic==2.10.6
+pydantic==2.10.6