From 4528ebf509663c3aa0f4c4445575653aa1c6ffe6 Mon Sep 17 00:00:00 2001
From: Andreas Herrmann <andreash87@gmx.ch>
Date: Sun, 15 Jun 2014 11:12:03 +0200
Subject: [PATCH] hdf5: Add zlib as optional dependency

This adds addition compression modes to the hdf5 library.

I am adding this, because pytables depends on it.
---
 pkgs/tools/misc/hdf5/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/misc/hdf5/default.nix b/pkgs/tools/misc/hdf5/default.nix
index 01820aaf778..8b1f8a3b964 100644
--- a/pkgs/tools/misc/hdf5/default.nix
+++ b/pkgs/tools/misc/hdf5/default.nix
@@ -1,6 +1,7 @@
 
 { stdenv
 , fetchurl
+, zlib ? null
 }:
 stdenv.mkDerivation {
   name = "hdf5-1.8.10-patch1";
@@ -8,7 +9,9 @@ stdenv.mkDerivation {
     url = http://www.hdfgroup.org/ftp/HDF5/current/src/hdf5-1.8.10-patch1.tar.gz;
     sha256 = "08ad32fhnci6rdfn6mn3w9v1wcaxdcd326n3ljwkcq4dzhkh28qz";  			
   };
-  buildInputs = [] ;
+
+  buildInputs = []
+    ++ stdenv.lib.optional (zlib != null) zlib;
   
   patches = [./bin-mv.patch];