From 62e729bf88b89f6484630f95371916a673657e14 Mon Sep 17 00:00:00 2001
From: Ivan Babrou <github@ivan.computer>
Date: Wed, 24 Feb 2021 08:58:34 -0800
Subject: [PATCH] python3Packages.curio: fix flaky test due to slow moving time

---
 pkgs/development/python-modules/curio/default.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/development/python-modules/curio/default.nix b/pkgs/development/python-modules/curio/default.nix
index 31875abd1e83..31bab8d8fa2e 100644
--- a/pkgs/development/python-modules/curio/default.nix
+++ b/pkgs/development/python-modules/curio/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 , isPy3k
 , pytestCheckHook
 , sphinx
@@ -16,6 +17,15 @@ buildPythonPackage rec {
     sha256 = "57edce81c837f3c2cf42fbb346dee26e537d1659e6605269fb13bd179e068744";
   };
 
+  patches = [
+    # Fix the flaky test due to slow moving time on Apple Silicon chips.
+    # Remove when https://github.com/dabeaz/curio/pull/339 is in the next release.
+    (fetchpatch {
+      url = "https://github.com/dabeaz/curio/commit/132376724bbfaa0a52d3d63d0791aa4ac1eb6f5f.patch";
+      sha256 = "sha256-AxO0xRcR9l9/NKEJFwyZIoYcyZxpqOhpdNaeaYokVb4=";
+    })
+  ];
+
   disabled = !isPy3k;
 
   checkInputs = [ pytestCheckHook sphinx ];