From 336b25b02980a9494199a218afa435ce939d881f Mon Sep 17 00:00:00 2001
From: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>
Date: Sun, 1 Jun 2025 17:50:10 -0400
Subject: [PATCH] mesa: fix dylib rpath on darwin

Without the patch, Xephyr fails to start with:

Library not loaded: @rpath/libgallium-25.1.1.dylib

Signed-off-by: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>
---
 pkgs/development/libraries/mesa/darwin.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/mesa/darwin.nix b/pkgs/development/libraries/mesa/darwin.nix
index 5e7743f117b6..fb64f9e70d60 100644
--- a/pkgs/development/libraries/mesa/darwin.nix
+++ b/pkgs/development/libraries/mesa/darwin.nix
@@ -127,6 +127,10 @@ stdenv.mkDerivation {
 
   mesonBuildType = "release";
 
+  postFixup = ''
+    install_name_tool -add_rpath "$out/lib" "$out/lib/libGL.dylib"
+  '';
+
   passthru = {
     # needed to pass evaluation of bad platforms
     driverLink = throw "driverLink not supported on darwin";