bristol: Broken on aarch64

https://nix-cache.s3.amazonaws.com/log/lidml6isyxw55aly6p8q40y2ga64ay01-bristol-0.60.11.drv

pkgs/applications/audio/bristol/default.nix

···
     description = "A range of synthesiser, electric piano and organ emulations";
     homepage = http://bristol.sourceforge.net;
     license = licenses.gpl3;
-    platforms = platforms.linux;
+    platforms = ["x86_64-linux" "i686-linux"];
     maintainers = [ maintainers.goibhniu ];
   };
 }