python313Packages.svgdigitizer: unbreak on darwin

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

@@ -59,6 +59,8 @@ buildPythonPackage rec {
     svgpathtools
     svgwrite
   ];
+  # https://github.com/echemdb/svgdigitizer/issues/252
+  MPLBACKEND = "Agg";
 
   nativeCheckInputs = [
     pytestCheckHook
@@ -78,7 +80,5 @@ buildPythonPackage rec {
     changelog = "https://github.com/echemdb/svgdigitizer/blob/${src.rev}/ChangeLog";
     license = lib.licenses.gpl3Only;
     maintainers = with lib.maintainers; [ doronbehar ];
-    # https://github.com/echemdb/svgdigitizer/issues/252
-    broken = stdenv.hostPlatform.isDarwin;
   };
 }