From 82adcd6cfb1c779b86c26e326a33728b316fa9c6 Mon Sep 17 00:00:00 2001
From: Michael Raskin <7c6f434c@mail.ru>
Date: Fri, 24 Mar 2017 22:01:31 +0100
Subject: [PATCH] pythonPackages.BTrees: fix evaluation; builds fine

---
 pkgs/development/python-modules/btrees/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/btrees/default.nix b/pkgs/development/python-modules/btrees/default.nix
index 44e96b5ff30..8e69a207628 100644
--- a/pkgs/development/python-modules/btrees/default.nix
+++ b/pkgs/development/python-modules/btrees/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, buildPythonPackage, persistent, zope_interface, transaction }:
+{ stdenv, fetchPypi, buildPythonPackage, persistent, zope_interface, transaction }:
 
 buildPythonPackage rec {
   pname = "BTrees";