{
  description = "Nix-to-XML converter.";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-22.05";
    utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, utils }: {
    lib.toXML = import ./to-xml.nix { inherit (nixpkgs) lib; };
    overlay = final: prev: { lib = prev.lib // { toXML = self.lib.toXML; }; };
  };
}