{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";

    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
  } @ inputs:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import nixpkgs {
        inherit system;
      };
      lib = nixpkgs.lib;
    in {
      devShells.default = pkgs.mkShell {
        VULKAN_SDK = "${pkgs.vulkan-validation-layers}/share/vulkan/explicit_layer.d";
        # LD_LIBRARY_PATH = "$LD_LIBRARY_PATH:${pkgs.SDL2}/lib/";
        LD_LIBRARY_PATH = lib.makeLibraryPath (with pkgs; [SDL2 vulkan-loader]);
        buildInputs = with pkgs; [
          SDL2
          SDL2.dev
          vulkan-headers
          vulkan-loader
          vulkan-validation-layers # maybe?
          shaderc
          # glm and whatnot …
        ];
      };
    });
}