--- build/flatten-headers.py.orig	2020-05-02 16:30:41.773805000 -0500
+++ build/flatten-headers.py	2020-05-02 16:30:49.511257000 -0500
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3.7
 #
 #  BLIS    
 #  An object-based framework for developing high-performance BLAS-like