{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        overlays = [ ];
        pkgs = import nixpkgs { inherit system overlays; };
      in {
        packages.outfly = pkgs.callPackage ./build.nix {};
        packages.default = self.packages.${system}.outfly;

        apps.outfly = {
          type = "app";
          program = "${self.packages.${system}.outfly}/bin/outfly";
        };
        apps.default = self.apps.${system}.outfly;

        devShells.default = let
          buildInputs = [
            pkgs.alsa-lib.dev

            #opengl
            pkgs.libGL

            pkgs.libxkbcommon

            pkgs.xorg.libXcursor
            pkgs.xorg.libXi
            pkgs.xorg.libXrandr
            pkgs.xorg.libX11

            pkgs.vulkan-loader
          ];
          nativeBuildInputs = [
            pkgs.cargo
            pkgs.pkg-config

          ];

        in pkgs.mkShell {
          inherit buildInputs nativeBuildInputs;
          LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath buildInputs}";
        };
      });
}