simutrans: don't build on Darwin

vcunat · vcunat · commit 616048bcbf95 · 2018-01-01T06:47:37.000+01:00
Support is perhaps claimed upstream, but it's never built successfully
on Hydra, so let's disable that until someone fixes it.
diff --git a/pkgs/games/simutrans/default.nix b/pkgs/games/simutrans/default.nix
@@ -163,7 +163,7 @@ let
       homepage = http://www.simutrans.com/;
       license = with licenses; [ artistic1 gpl1Plus ];
       maintainers = with maintainers; [ kkallio vcunat phile314 ];
-      platforms = with platforms; linux ++ darwin;
+      platforms = with platforms; linux; # TODO: ++ darwin;
     };
   };
 
