python3Packages.webthing: disable on older Python releases

pkgs/development/python-modules/webthing/default.nix

@@ -4,6 +4,7 @@
 , ifaddr
 , jsonschema
 , pyee
+, pythonOlder
 , tornado
 , zeroconf
 }:
@@ -11,12 +12,15 @@
 buildPythonPackage rec {
   pname = "webthing";
   version = "0.15.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "WebThingsIO";
     repo = "webthing-python";
     rev = "v${version}";
-    sha256 = "06264rwchy4qmbn7lv7m00qg864y7aw3rngcqqcr9nvaqz4rb0fg";
+    hash = "sha256-z4GVycdq25QZxuzZPLg6nhj0MAD1bHrsqph4yHgmRhg=";
   };
 
   propagatedBuildInputs = [
@@ -27,9 +31,12 @@ buildPythonPackage rec {
     zeroconf
   ];
 
-  # no tests are present
+  # No tests are present
   doCheck = false;
-  pythonImportsCheck = [ "webthing" ];
+
+  pythonImportsCheck = [
+    "webthing"
+  ];
 
   meta = with lib; {
     description = "Python implementation of a Web Thing server";