python310Packages.micawber: disable on unsupported python releases

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

···
-{ lib, buildPythonPackage, fetchPypi, beautifulsoup4 }:
+{ lib
+, buildPythonPackage
+, fetchPypi
+, beautifulsoup4
+, pythonOlder
+}:
 
 buildPythonPackage rec {
   pname = "micawber";
   version = "0.5.5";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "sha256-CsWBS2X/KngfsTlLkaI6ipX3NJK2u49wW67q2C6t1UM=";
   };
 
-  propagatedBuildInputs = [ beautifulsoup4 ];
+  propagatedBuildInputs = [
+    beautifulsoup4
+  ];
 
   meta = with lib; {
     homepage = "https://micawber.readthedocs.io/en/latest/";
-    description = "A small library for extracting rich content from urls";
+    description = "Module for extracting rich content from URLs";
     license = licenses.mit;
     longDescription = ''
       micawber supplies a few methods for retrieving rich metadata