From 3d18975478e4f2cc9bd92fd44b7e9d8c331fcec1 Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Wed, 22 Apr 2020 12:38:28 -0500
Subject: [PATCH] python.pkgs.scipy: set SCIPY_USE_G77_ABI_WRAPPER=1
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To avoid segmentation fault on MKL, we need to use the CBLAS ABI.
Normally, scipy will autodetect this, but here we don’t link using the
‘libmkl_rt.so’ name. So we need to manually set this.

See https://github.com/scipy/scipy/blob/50012918db47f0ec3418dd53f0277daa589f82e3/doc/source/building/linux.rst#fortran-abi-mismatch
---
 pkgs/development/python-modules/scipy/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/python-modules/scipy/default.nix b/pkgs/development/python-modules/scipy/default.nix
index a9947e7e689f..ace6c248ab2c 100644
--- a/pkgs/development/python-modules/scipy/default.nix
+++ b/pkgs/development/python-modules/scipy/default.nix
@@ -53,6 +53,8 @@ in buildPythonPackage rec {
 
   setupPyBuildFlags = [ "--fcompiler='gnu95'" ];
 
+  SCIPY_USE_G77_ABI_WRAPPER = 1;
+
   meta = {
     description = "SciPy (pronounced 'Sigh Pie') is open-source software for mathematics, science, and engineering. ";
     homepage = "https://www.scipy.org/";