1 files changed, 9 insertions, 5 deletions
diff --git a/pkgs/development/python-modules/immutables/default.nix b/pkgs/development/python-modules/immutables/default.nix
index 83d6336fe5978..34a48ed2a1f60 100644
--- a/pkgs/development/python-modules/immutables/default.nix
+++ b/pkgs/development/python-modules/immutables/default.nix
@@ -9,17 +9,19 @@
 
 buildPythonPackage rec {
   pname = "immutables";
-  version = "0.17";
+  version = "0.18";
+  format = "setuptools";
+
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "MagicStack";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-4VuB8eTWHD4hEDj11u/talfv38h2BhogSZmEVyUtnko=";
+    hash = "sha256-lXCoPTcpTOv9K0xCVjbrP3qlzP9tfk/e3Rk3oOmbS/Y=";
   };
 
-  propagatedBuildInputs = [
+  propagatedBuildInputs = lib.optionals (pythonOlder "3.8") [
     typing-extensions
   ];
 
@@ -33,10 +35,12 @@ buildPythonPackage rec {
     "testMypyImmu"
   ];
 
-  pythonImportsCheck = [ "immutables" ];
+  pythonImportsCheck = [
+    "immutables"
+  ];
 
   meta = with lib; {
-    description = "An immutable mapping type for Python";
+    description = "An immutable mapping type";
     homepage = "https://github.com/MagicStack/immutables";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ catern ];