From 9610fc55efb97eef2316edaee886beadb822144e Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Thu, 11 Aug 2016 22:15:05 -0500
Subject: [PATCH] gpicview: fix darwin build

---
 pkgs/applications/graphics/gpicview/default.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/graphics/gpicview/default.nix b/pkgs/applications/graphics/gpicview/default.nix
index 4d01bbd126b..7e11c9dea3a 100644
--- a/pkgs/applications/graphics/gpicview/default.nix
+++ b/pkgs/applications/graphics/gpicview/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, intltool, pkgconfig, gtk2 }:
+{ stdenv, fetchurl, intltool, pkgconfig, gtk2, fetchpatch }:
 
 stdenv.mkDerivation {
   name = "gpicview-0.2.4";
@@ -8,6 +8,13 @@ stdenv.mkDerivation {
     sha256 = "1svcy1c8bgk0pl12yhyv16h2fl52x5vzzcv57z6qdcv5czgvgglr";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://raw.githubusercontent.com/nonas/debian-clang/master/buildlogs/gpicview/gpicview-0.2.4/debian/patches/clang_FTBFS_Wreturn-type.patch";
+      sha256 = "02dm966bplnv10knpdx7rlpjipk884156ggd9ij05zhza0jl8xcs";
+    })
+  ];
+
   meta = with stdenv.lib; {
     description = "A simple and fast image viewer for X";
     homepage    = http://lxde.sourceforge.net/gpicview/;