From 67c0df93ead69f20418853fdbd1356671e869ed6 Mon Sep 17 00:00:00 2001
From: Robert Scott <code@humanleg.org.uk>
Date: Sat, 20 Nov 2021 16:48:52 +0000
Subject: [PATCH] gimp: fix build on darwin

despite us currently having a gtk2 without `GDK_OSX_BIGSUR` defined,
gimp have gone and spelt it `GDK_OSX_BIG_SUR` so define this
manually anyway
---
 pkgs/applications/graphics/gimp/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/applications/graphics/gimp/default.nix b/pkgs/applications/graphics/gimp/default.nix
index 86550b873719..11a9382c94c8 100644
--- a/pkgs/applications/graphics/gimp/default.nix
+++ b/pkgs/applications/graphics/gimp/default.nix
@@ -148,6 +148,8 @@ in stdenv.mkDerivation rec {
   # test-eevl.c:64:36: error: initializer element is not a compile-time constant
   doCheck = !stdenv.isDarwin;
 
+  NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin "-DGDK_OSX_BIG_SUR=16";
+
   # Check if librsvg was built with --disable-pixbuf-loader.
   PKG_CONFIG_GDK_PIXBUF_2_0_GDK_PIXBUF_MODULEDIR = "${librsvg}/${gdk-pixbuf.moduleDir}";