From 76759a185362c1dcaed4fc90303d4cfbaa2d1f02 Mon Sep 17 00:00:00 2001
From: WhizZest <130823924+WhizZest@users.noreply.github.com>
Date: Sat, 28 Feb 2026 08:52:10 +0800
Subject: [PATCH] Fix CLIP installation failures(issue#17201, #17284, #17287,
 Discussion #17283,#17275) (#17293)

---
 modules/launch_utils.py | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/modules/launch_utils.py b/modules/launch_utils.py
index cc97a67b0..e1afeb3ec 100644
--- a/modules/launch_utils.py
+++ b/modules/launch_utils.py
@@ -422,8 +422,24 @@ def prepare_environment():
         )
     startup_timer.record("torch GPU test")
 
+    # Ensure build dependencies are installed before any package that might need them
+    def ensure_build_dependencies():
+        """Ensure essential build tools are available"""
+        if not is_installed("wheel"):
+            run_pip("install wheel", "wheel")
+        # Check setuptools version compatibility
+        try:
+            setuptools_version = run(f'"{python}" -c "import setuptools; print(setuptools.__version__)"', None, None).strip()
+            if setuptools_version >= "70":
+                run_pip("install 'setuptools<70'", "setuptools")
+        except Exception:
+            # If setuptools check fails, install compatible version
+            run_pip("install 'setuptools<70'", "setuptools")
+    # Install build dependencies early
+    ensure_build_dependencies()
+
     if not is_installed("clip"):
-        run_pip(f"install {clip_package}", "clip")
+        run_pip(f"install --no-build-isolation {clip_package}", "clip")
         startup_timer.record("install clip")
 
     if not is_installed("open_clip"):