From e9dc6dc96cf4aa912dcff12413c10e51f73631cb Mon Sep 17 00:00:00 2001
From: "Adam J. Stewart" <ajstewart426@gmail.com>
Date: Tue, 4 Jul 2023 03:48:56 -0500
Subject: Fix DYLD_* propagation to Python process from fish shell (#38615)

---
 share/spack/setup-env.fish | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/share/spack/setup-env.fish b/share/spack/setup-env.fish
index e00d8e76bb..901ffe129f 100755
--- a/share/spack/setup-env.fish
+++ b/share/spack/setup-env.fish
@@ -372,7 +372,14 @@ end
 
 
 function spack_runner -d "Runner function for the `spack` wrapper"
-
+    # Store DYLD_* variables from spack shell function
+    # This is necessary because MacOS System Integrity Protection clears
+    # variables that affect dyld on process start.
+    for var in DYLD_LIBRARY_PATH DYLD_FALLBACK_LIBRARY_PATH
+        if set -q $var
+            set -gx SPACK_$var $$var
+        end
+    end
 
     #
     # Accumulate initial flags for main spack command
-- 
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