{
  description = "A wrapper tool for nix OpenGL applications";

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

  outputs = {
    self,
    nixpkgs,
    flake-utils,
  }:
    (flake-utils.lib.eachDefaultSystem (system: let
      isIntelX86Platform = system == "x86_64-linux";
      nix_pkgs = import nixpkgs {inherit system;};
      pkgs = import ./default.nix {
        pkgs = nix_pkgs;
        enable32bits = isIntelX86Platform;
        enableIntelX86Extensions = isIntelX86Platform;
      };
    in rec {
      packages = {
        # makes it easy to use "nix run nixGL --impure -- program"
        default = pkgs.auto.nixGLDefault;

        nixGLDefault = pkgs.auto.nixGLDefault;
        nixGLNvidia = pkgs.auto.nixGLNvidia;
        nixGLNvidiaBumblebee = pkgs.auto.nixGLNvidiaBumblebee;
        nixGLIntel = pkgs.nixGLIntel;
        nixVulkanNvidia = pkgs.auto.nixVulkanNvidia;
        nixVulkanIntel = pkgs.nixVulkanIntel;
      };

      # deprecated attributes for retro compatibility
      defaultPackage = packages;
    }))
    // rec {
      # deprecated attributes for retro compatibility
      overlay = overlays.default;
      overlays.default = final: _: let
        isIntelX86Platform = final.system == "x86_64-linux";
      in {
        nixgl = import ./default.nix {
          pkgs = final;
          enable32bits = isIntelX86Platform;
          enableIntelX86Extensions = isIntelX86Platform;
        };
      };
    };
}