From b529e518bea5b7dc58e5baf18e068470af9c57ce Mon Sep 17 00:00:00 2001
From: Manuel Candales <mcandales@meta.com>
Date: Fri, 13 Mar 2026 15:18:11 -0400
Subject: [PATCH] use --no-cache-dir in install_requirements

---
 install_requirements.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/install_requirements.py b/install_requirements.py
index d5371d09a5b..a113f0d7e3b 100644
--- a/install_requirements.py
+++ b/install_requirements.py
@@ -55,12 +55,14 @@ def install_requirements(use_pytorch_nightly):
     # Install the requirements for core ExecuTorch package.
     # `--extra-index-url` tells pip to look for package
     # versions on the provided URL if they aren't available on the default URL.
+    # Use --no-cache-dir to avoid stale cache issues with mutable test wheels.
     subprocess.run(
         [
             sys.executable,
             "-m",
             "pip",
             "install",
+            "--no-cache-dir",
             "-r",
             "requirements-dev.txt",
             *TORCH_PACKAGE,
@@ -122,6 +124,7 @@ def install_optional_example_requirements(use_pytorch_nightly):
             "-m",
             "pip",
             "install",
+            "--no-cache-dir",
             *DOMAIN_LIBRARIES,
             "--extra-index-url",
             torch_url,