haskell-yi-custom: broken = true for now

pkgs/applications/editors/yi/yi-custom.nix

···
     license = self.stdenv.lib.licenses.publicDomain;
     platforms = self.ghc.meta.platforms;
     maintainers = with self.stdenv.lib.maintainers; [ fuuzetsu ];
+    # The wrapper does not yet work properly if we actually try to use it.
+    broken = true;
   };
 
 })