anchor.diff:  
     variants = [ "base" "full" "minimal" "staging" "unstable" ];
   
  -in listToAttrs (map (makeWineTest "winePackages" [ hello32 ]) variants
  -  ++ map (makeWineTest "wineWowPackages" [ hello32 hello64 ]) variants)
  +in
  +listToAttrs (
  +  map (makeWineTest "winePackages" [ hello32 ]) variants
  +  ++ optionals pkgs.stdenv.is64bit
  +    (map (makeWineTest "wineWowPackages" [ hello32 hello64 ]) variants)
  +)
  
positive.code:               "bash -c 'wine ${exe} 2> >(tee wine-stderr >&2)'"
            )
            assert 'Hello, world!' in greeting
            machine.fail(
                "fgrep 'Could not find Wine Gecko. HTML rendering will be disabled.' wine-stderr"
            )
  
negative.code: 
        machine = { pkgs, ... }: {
          environment.systemPackages = [ pkgs."${packageSet}"."${variant}" ];
          virtualisation.diskSize = 800;
        };
  
        testScript = ''
  