From 604620a7f08d1126a8689f9f4bec8ade0801a69b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=81=B5=E3=81=81?=
 <34892635+fa0311@users.noreply.github.com>
Date: Thu, 20 Oct 2022 03:16:22 +0900
Subject: [PATCH] Add xformers message.

---
 launch.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/launch.py b/launch.py
index 7b15e78e..333f308a 100644
--- a/launch.py
+++ b/launch.py
@@ -156,9 +156,15 @@ def prepare_enviroment():
     if not is_installed("clip"):
         run_pip(f"install {clip_package}", "clip")
 
-    if (not is_installed("xformers") or reinstall_xformers) and xformers and platform.python_version().startswith("3.10"):
+    if (not is_installed("xformers") or reinstall_xformers) and xformers:
         if platform.system() == "Windows":
-            run_pip(f"install -U -I --no-deps {xformers_windows_package}", "xformers")
+            if platform.python_version().startswith("3.10"):
+                run_pip(f"install -U -I --no-deps {xformers_windows_package}", "xformers")
+            else:
+                print("Installation of xformers is not supported in this version of Python.")
+                print("You can also check this and build manually: https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/Xformers#building-xformers-on-windows-by-duckness")
+                if not is_installed("xformers"):
+                    exit(0)
         elif platform.system() == "Linux":
             run_pip("install xformers", "xformers")