From bb5faafbca29dea9c7d464a85f99132e43d17d5b Mon Sep 17 00:00:00 2001
From: Graham Christensen <graham@grahamc.com>
Date: Mon, 6 Jun 2016 16:00:10 -0500
Subject: [PATCH] gemconfig: rmagick requires which as of 2.15.4

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

diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 64cacc976f4..580efc2278e 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -115,7 +115,7 @@ in
   };
 
   rmagick = attrs: {
-    buildInputs = [ imagemagick pkgconfig ];
+    buildInputs = [ imagemagick pkgconfig which ];
   };
 
   rugged = attrs: {