From 1a230cfb207a82d29843981cdd0e26dc0a8de0a0 Mon Sep 17 00:00:00 2001
From: Jonathan Ringer <jonringer117@gmail.com>
Date: Tue, 16 Jun 2020 14:01:20 -0700
Subject: [PATCH] pythonPackages.http-ece: fix builds

---
 pkgs/development/python-modules/http-ece/default.nix | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/http-ece/default.nix b/pkgs/development/python-modules/http-ece/default.nix
index eafa429b439..638191ee7fc 100644
--- a/pkgs/development/python-modules/http-ece/default.nix
+++ b/pkgs/development/python-modules/http-ece/default.nix
@@ -1,5 +1,5 @@
-{ lib, fetchPypi, buildPythonPackage
-, coverage, flake8, mock, nose
+{ lib, fetchPypi, buildPythonPackage, pythonOlder
+, coverage, flake8, mock, nose, importlib-metadata
 , cryptography }:
 
 buildPythonPackage rec {
@@ -11,7 +11,8 @@ buildPythonPackage rec {
     sha256 = "1y5ln09ji4dwpzhxr77cggk02kghq7lql60a6969a5n2lwpvqblk";
   };
 
-  propagatedBuildInputs = [ cryptography ];
+  propagatedBuildInputs = [ cryptography ]
+    ++ lib.optionals (pythonOlder "3.8") [ importlib-metadata ];
 
   checkInputs = [ coverage flake8 mock nose ];