From a3b66fa65647eaa3991b6f04a170ea3b6766f8fd Mon Sep 17 00:00:00 2001
From: Jonathan Ringer <jonringer117@gmail.com>
Date: Fri, 7 Aug 2020 13:53:46 -0700
Subject: [PATCH] python3Packages.dask: 2.14.0 -> 2.22.0

---
 pkgs/development/python-modules/dask/default.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/dask/default.nix b/pkgs/development/python-modules/dask/default.nix
index 1b3a08aa997..9c03f6d7165 100644
--- a/pkgs/development/python-modules/dask/default.nix
+++ b/pkgs/development/python-modules/dask/default.nix
@@ -11,11 +11,12 @@
 , dill
 , pandas
 , partd
+, pytest_xdist
 }:
 
 buildPythonPackage rec {
   pname = "dask";
-  version = "2.14.0";
+  version = "2.22.0";
 
   disabled = pythonOlder "3.5";
 
@@ -23,13 +24,16 @@ buildPythonPackage rec {
     owner = "dask";
     repo = pname;
     rev = version;
-    sha256 = "0kj46pwzvdw8ii1h45y48wxvjid89yp4cfak2h4b8z8xic73fqgj";
+    sha256 = "08nvxj81cz9x92dh2gbmm4imkr8cfljfi2hxkballv2ygwcbzg8g";
   };
 
   checkInputs = [
     pytestCheckHook
+    pytest_xdist # takes >10mins to run single-threaded
   ];
 
+  pytestFlagsArray = [ "-n $NIX_BUILD_CORES" ];
+
   dontUseSetuptoolsCheck = true;
 
   propagatedBuildInputs = [
@@ -55,6 +59,7 @@ buildPythonPackage rec {
   disabledTests = [
     "test_argwhere_str"
     "test_count_nonzero_str"
+    "rolling_methods"  # floating percision error ~0.1*10^8 small
   ];
 
   meta = {