python3Packages.bech32: modernize

pkgs/development/python-modules/bech32/default.nix

@@ -4,20 +4,24 @@
   fetchPypi,
   setuptools,
 }:
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "bech32";
   version = "1.2.0";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-fW24IUYDvXhx/PpsCCbvaLhbCr2Q+iHChanF4h0r2Jk=";
   };
 
   build-system = [ setuptools ];
 
+  pythonImportsCheck = [ "bech32" ];
+
   meta = {
     homepage = "https://pypi.org/project/bech32/";
     license = with lib.licenses; [ mit ];
   };
-}
+})