1 files changed, 8 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/dask/default.nix b/nixpkgs/pkgs/development/python-modules/dask/default.nix
index 1b3a08aa997..d69ae77e1a6 100644
--- a/nixpkgs/pkgs/development/python-modules/dask/default.nix
+++ b/nixpkgs/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 +59,8 @@ buildPythonPackage rec {
   disabledTests = [
     "test_argwhere_str"
     "test_count_nonzero_str"
+    "rolling_methods"  # floating percision error ~0.1*10^8 small
+    "num_workers_config" # flaky
   ];
 
   meta = {