python3Packages.requests-pkcs12: disable on older Python releases

pkgs/development/python-modules/requests-pkcs12/default.nix

@@ -2,18 +2,22 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pyopenssl
+, pythonOlder
 , requests
 }:
 
 buildPythonPackage rec {
   pname = "requests-pkcs12";
   version = "1.14";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "m-click";
     repo = "requests_pkcs12";
     rev = version;
-    sha256 = "sha256-LZgKjSas0KdJAf4leSVz8sEnRrlJ20Sm9Ka+S5zDOTM=";
+    hash = "sha256-LZgKjSas0KdJAf4leSVz8sEnRrlJ20Sm9Ka+S5zDOTM=";
   };
 
   propagatedBuildInputs = [
@@ -23,7 +27,10 @@ buildPythonPackage rec {
 
   # Project has no tests
   doCheck = false;
-  pythonImportsCheck = [ "requests_pkcs12" ];
+
+  pythonImportsCheck = [
+    "requests_pkcs12"
+  ];
 
   meta = with lib; {
     description = "PKCS#12 support for the Python requests library";