python.pkgs.phonenumbers: use fetchPypi

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

···
-{ stdenv, fetchurl, buildPythonPackage }:
+{ stdenv, fetchPypi, buildPythonPackage }:
 
 buildPythonPackage rec {
   pname = "phonenumbers";
   version = "8.8.0";
   name = "${pname}-${version}";
 
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0j8yzn7fva863v7vrjk0s1d63yswg8hf2hlpvfwzxk9absjyvmgq";
+  };
+
   meta = {
     description = "Python version of Google's common library for parsing, formatting, storing and validating international phone numbers";
     homepage    = "https://github.com/daviddrysdale/python-phonenumbers";
     license     = stdenv.lib.licenses.asl20;
     maintainers = with stdenv.lib.maintainers; [ fadenb ];
-  };
-
-  src = fetchurl {
-    url = "mirror://pypi/p/phonenumbers/${name}.tar.gz";
-    sha256 = "0j8yzn7fva863v7vrjk0s1d63yswg8hf2hlpvfwzxk9absjyvmgq";
   };
 }