flake.nix

{
    description = "Simple overlay flake";

    inputs.nixpkgs.url = "nixpkgs/release-20.03";

    outputs = inputs@{ self, nixpkgs }: {

        overlay = final: prev: {
            wine = prev.wine.override ({
                wineRelease = "staging";
                wineBuild = "wineWow";
            });
        };

    };
}