{
  description = "A very basic flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    home-manager.url = "github:nix-community/home-manager";
    home-manager.inputs.nixpkgs.follows = "nixpkgs"; # ensures version follows nixpkgs

    hyprland.url = "github:hyprwm/Hyprland";
    hyprland.inputs.nixpkgs.follows = "nixpkgs";

    astal.url = "github:aylur/astal";
    astal.inputs.nixpkgs.follows = "nixpkgs";

    ags.url = "github:aylur/ags";
    ags.inputs.nixpkgs.follows = "nixpkgs";

    hyprpanel.url = "github:Jas-SinghFSU/Hyprpanel";
    hyprpanel.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = {
    self,
    nixpkgs,
    home-manager,
    ags,
    astal,
    hyprpanel,
    ...
  } @ inputs: let
    lib = nixpkgs.lib;
    system = "x86_64-linux";
    pkgs = nixpkgs.legacyPackages.${system};
  in {
    # TODO: migrate to another nix file.
    # packages.${system}.default = pkgs.stdenv.mkDerivation {
    #   pname = "marble";
    #   src = ./marble;
    #   dontUnpack = true;
    #
    #   nativeBuildInputs = with pkgs; [
    #     wrapGAppsHook
    #     gobject-introspection
    #   ];
    #
    #   buildInputs =
    #     (with astal.packages.${system}; [
    #       astal3
    #       io
    #       apps
    #       battery
    #       bluetooth
    #       hyprland
    #       mpris
    #       network
    #       notifd
    #       powerprofiles
    #       tray
    #       wireplumber
    #     ])
    #     ++ (with pkgs; [
    #       gjs
    #     ]);
    #
    #   preFixup = ''
    #     gappsWrapperArgs+=(
    #       --prefix PATH : ${with pkgs;
    #       lib.makeBinPath [
    #         dart-sass
    #         fzf
    #       ]}
    #     )
    #   '';
    #
    #   installPhase = ''
    #     mkdir -p $out/bin
    #     install $src $out/bin/marble
    #   '';
    # }; # END TODO

    nixosConfigurations = {
      biscuit = lib.nixosSystem {
        specialArgs = {inherit inputs system;};
        inherit system;
        modules = [
          ./nixos/configuration.nix
        ];
      };
    };
    homeConfigurations = {
      biscuit = home-manager.lib.homeManagerConfiguration {
        pkgs = import nixpkgs {
          inherit system;
          overlays = [inputs.hyprpanel.overlay];
        };
        # inherit pkgs;
        extraSpecialArgs = {inherit inputs system;};
        modules = [./home-manager/home.nix];
      };
    };
  };
}