From 707f512c7d951c917b78d303e77a992913d06202 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Sun, 24 Jan 2016 18:10:44 +0100
Subject: [PATCH] fix eval

---
 pkgs/top-level/python-packages.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 84b3f15fe50..12b3bc4fdad 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8977,7 +8977,7 @@ in modules // {
     };
   };
 
-  futures_2_2 = self.futures.override {
+  futures_2_2 = self.futures.override rec {
     version = "2.2.0";
     name = "futures-${version}";