From 135f034db4936a341d542485610e7daa46e9466c Mon Sep 17 00:00:00 2001
From: Bruno Rodrigues <bruno@brodrigues.co>
Date: Mon, 11 Nov 2024 21:41:46 +0100
Subject: [PATCH] rPackages.gdtools: fix build on darwin

---
 pkgs/development/r-modules/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index a7dfb55aba28..347cb2978279 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -378,7 +378,7 @@ let
     frailtyMMpen = [ pkgs.gsl ];
     gamstransfer = [ pkgs.zlib ];
     gdalraster = [ pkgs.pkg-config ];
-    gdtools = with pkgs; [ cairo.dev fontconfig.lib freetype.dev ];
+    gdtools = with pkgs; [ cairo.dev fontconfig.lib freetype.dev ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ expat xorg.libXdmcp ];
     GeneralizedWendland = [ pkgs.gsl ];
     ggiraph = with pkgs; [ pkgs.libpng.dev ];
     git2r = with pkgs; [ zlib.dev openssl.dev libssh2.dev libgit2 pkg-config ];