From 90b2afee040c8c20af58fdcec789e9bb73908b9a Mon Sep 17 00:00:00 2001
From: Thomas Tuegel <ttuegel@gmail.com>
Date: Thu, 4 Jun 2015 13:49:41 -0500
Subject: [PATCH] haskell-hmatrix: build with openblas

Fixes #6392.
---
 pkgs/development/haskell-modules/configuration-common.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index ade2055187d4..dbb7aadb4a2b 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -119,6 +119,11 @@ self: super: {
   # Help libconfig find it's C language counterpart.
   libconfig = (dontCheck super.libconfig).override { config = pkgs.libconfig; };
 
+  hmatrix = overrideCabal super.hmatrix (drv: {
+    configureFlags = (drv.configureFlags or []) ++ [ "-fopenblas" ];
+    extraLibraries = [ pkgs.openblasCompat ];
+  });
+
   # The Haddock phase fails for one reason or another.
   attoparsec-conduit = dontHaddock super.attoparsec-conduit;
   base-noprelude = dontHaddock super.base-noprelude;