From 2e2d2ab6ab8ed85fbb6a5524e6abc30df1731541 Mon Sep 17 00:00:00 2001
From: Tim D. Smith
Date: Wed, 27 Jan 2016 08:39:32 -0800
Subject: allow PYTHONPATH to override Homebrew site-packages

---
 Library/Homebrew/formula.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Library/Homebrew')

diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index fc1219a40..e807e2ce2 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -1361,7 +1361,7 @@ class Formula
     user_site_packages.mkpath
     (user_site_packages/"homebrew.pth").write <<-EOS.undent
       import site; site.addsitedir("#{HOMEBREW_PREFIX}/lib/python2.7/site-packages")
-      import sys; sys.path.insert(0, "#{HOMEBREW_PREFIX}/lib/python2.7/site-packages")
+      import sys, os; sys.path = (os.environ["PYTHONPATH"].split(os.pathsep) if "PYTHONPATH" in os.environ else []) + ["#{HOMEBREW_PREFIX}/lib/python2.7/site-packages"] + sys.path
     EOS
   end
 
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