From e3b95650f78c61215106cd3dd1c45c76e975a99e Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Wed, 19 Jul 2023 20:06:27 -0600
Subject: [PATCH] librsvg: fix link failure on x86_64-darwin

---
 pkgs/development/libraries/librsvg/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/librsvg/default.nix b/pkgs/development/libraries/librsvg/default.nix
index 9520dda51c48..9974826573a7 100644
--- a/pkgs/development/libraries/librsvg/default.nix
+++ b/pkgs/development/libraries/librsvg/default.nix
@@ -102,6 +102,12 @@ stdenv.mkDerivation (finalAttrs: {
     ${lib.optionalString (stdenv.hostPlatform.emulatorAvailable buildPackages) (stdenv.hostPlatform.emulator buildPackages)} ${lib.getDev gdk-pixbuf}/bin/gdk-pixbuf-query-loaders
   '';
 
+  # librsvg only links Foundation, but it also requiers libobjc. The Framework.tbd in the 11.0 SDK
+  # reexports libobjc, but the one in the 10.12 SDK does not, so link it manually.
+  env = lib.optionalAttrs (stdenv.isDarwin && stdenv.isx86_64) {
+    NIX_LDFLAGS = "-lobjc";
+  };
+
   preConfigure = ''
     PKG_CONFIG_VAPIGEN_VAPIGEN="$(type -p vapigen)"
     export PKG_CONFIG_VAPIGEN_VAPIGEN