libbass: disable until upstream provides stable urls

pkgs/development/libraries/audio/libbass/default.nix

@@ -60,6 +60,8 @@ let
       homepage = "https://www.un4seen.com/";
       license = licenses.unfreeRedistributable;
       platforms = builtins.attrNames bass.so;
+      # until upstream has stable URLs, this package is prone to always being broken
+      broken = true;
     };
   };