From 9ade2dfa3cefe89776d48cea684c8ea0d3bc8e13 Mon Sep 17 00:00:00 2001
From: Thomas Tuegel <ttuegel@gmail.com>
Date: Thu, 28 Aug 2014 18:34:41 -0500
Subject: [PATCH] openblas: add local build preference to pinned versions

---
 .../libraries/science/math/openblas/0.2.10.nix            | 8 ++++++--
 .../development/libraries/science/math/openblas/0.2.2.nix | 8 ++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/libraries/science/math/openblas/0.2.10.nix b/pkgs/development/libraries/science/math/openblas/0.2.10.nix
index a8db06319111..c8df06ef3787 100644
--- a/pkgs/development/libraries/science/math/openblas/0.2.10.nix
+++ b/pkgs/development/libraries/science/math/openblas/0.2.10.nix
@@ -1,5 +1,8 @@
-{ stdenv, fetchurl, gfortran, perl, liblapack }:
+{ stdenv, fetchurl, gfortran, perl, liblapack, config }:
 
+let local = config.openblas.preferLocalBuild or false;
+    localTarget = config.openblas.target or "";
+in
 stdenv.mkDerivation rec {
   version = "0.2.10";
 
@@ -16,7 +19,8 @@ stdenv.mkDerivation rec {
 
   cpu = builtins.head (stdenv.lib.splitString "-" stdenv.system);
 
-  target = if cpu == "i686" then "P2" else 
+  target = if local then localTarget else
+    if cpu == "i686" then "P2" else
     if cpu == "x86_64" then "CORE2" else
      # allow autodetect
       "";
diff --git a/pkgs/development/libraries/science/math/openblas/0.2.2.nix b/pkgs/development/libraries/science/math/openblas/0.2.2.nix
index c535b1a39dbb..22dbc491f878 100644
--- a/pkgs/development/libraries/science/math/openblas/0.2.2.nix
+++ b/pkgs/development/libraries/science/math/openblas/0.2.2.nix
@@ -1,5 +1,8 @@
-{ stdenv, fetchurl, gfortran, perl, liblapack }:
+{ stdenv, fetchurl, gfortran, perl, liblapack, config }:
 
+let local = config.openblas.preferLocalBuild or false;
+    localTarget = config.openblas.target or "";
+in
 stdenv.mkDerivation rec {
   version = "0.2.2";
 
@@ -16,7 +19,8 @@ stdenv.mkDerivation rec {
 
   cpu = builtins.head (stdenv.lib.splitString "-" stdenv.system);
 
-  target = if cpu == "i686" then "P2" else 
+  target = if local then localTarget else
+    if cpu == "i686" then "P2" else
     if cpu == "x86_64" then "CORE2" else
      # allow autodetect
       "";