From 618b7d7de08540d244c5adcd03c5bdc996630191 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20M=C3=B6ller?= <fabianm88@gmail.com>
Date: Sat, 14 Sep 2019 22:24:57 +0200
Subject: [PATCH] nbval: fix darwin build

---
 pkgs/development/python-modules/nbval/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/python-modules/nbval/default.nix b/pkgs/development/python-modules/nbval/default.nix
index 60aa4806e2f..860142f1e94 100644
--- a/pkgs/development/python-modules/nbval/default.nix
+++ b/pkgs/development/python-modules/nbval/default.nix
@@ -45,6 +45,9 @@ buildPythonPackage rec {
     pytest tests --ignore tests/test_timeouts.py
   '';
 
+  # Some of the tests use localhost networking.
+  __darwinAllowLocalNetworking = true;
+
   meta = with lib; {
     description = "A py.test plugin to validate Jupyter notebooks";
     homepage = https://github.com/computationalmodelling/nbval;