anchor.diff:    wineWow = callPackage ./base.nix {
       name = "wine-wow-${version}";
       inherit src version supportFlags;
  -    # FIXME: see above.
  -    stdenv = overrideCC stdenv_32bit (wrapCCMulti gcc49);
  +    stdenv = stdenv_32bit;
       pkgArches = [ pkgs pkgsi686Linux ];
       geckos = [ gecko32 gecko64 ];
       monos =  [ mono ];
  
positive.code: { system, stdenv, stdenv_32bit, lib, pkgs, pkgsi686Linux, callPackage, callPackage_i686,
    overrideCC, wrapCCMulti, gcc49,
    wineRelease ? "stable",
    supportFlags
  }:
  
negative.code:   wine64 = callPackage ./base.nix {
      name = "wine64-${version}";
      inherit src version supportFlags;
      pkgArches = [ pkgs ];
      geckos = [ gecko64 ];
      monos =  [ mono ];
  