tzupdate: use less with lib; make src rev accurate

pkgs/applications/misc/tzupdate/default.nix

@@ -11,18 +11,18 @@ rustPlatform.buildRustPackage rec {
   src = fetchFromGitHub {
     owner = "cdown";
     repo = "tzupdate";
-    rev = version;
+    rev = "refs/tags/${version}";
     hash = "sha256-eod4yFzX7pATNQmG7jU+r9mnC9nprJ55ufMXpKjw/YI=";
   };
 
   cargoHash = "sha256-5+lp5xlwJxFDqzVxptJPX7z0iLoMkgdwHxvRVIXHF7Y=";
 
-  meta = with lib; {
+  meta = {
     description = "Set the system timezone based on IP geolocation";
     homepage = "https://github.com/cdown/tzupdate";
-    license = licenses.mit;
-    maintainers = with maintainers; [ camillemndn ];
-    platforms = platforms.linux;
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ camillemndn ];
+    platforms = lib.platforms.linux;
     mainProgram = "tzupdate";
   };
 }