From d56accc4f6b57bf1c094772a9d79e81b13bd1581 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Tue, 18 Jun 2019 21:18:45 -0400
Subject: [PATCH] pythonPackages.uproot: fix tests on python27

---
 pkgs/development/python-modules/uproot/default.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/uproot/default.nix b/pkgs/development/python-modules/uproot/default.nix
index 6ea96c63aa04..9387ba778016 100644
--- a/pkgs/development/python-modules/uproot/default.nix
+++ b/pkgs/development/python-modules/uproot/default.nix
@@ -1,5 +1,6 @@
-{ lib, fetchPypi, buildPythonPackage
+{ lib, fetchPypi, buildPythonPackage, isPy27
 , awkward
+, backports_lzma
 , cachetools
 , lz4
 , pytestrunner
@@ -30,7 +31,7 @@ buildPythonPackage rec {
     pytest
     requests
     xxhash
-  ];
+  ] ++ lib.optional isPy27 backports_lzma;
 
   propagatedBuildInputs = [
     numpy