{
  description = "Miller Nix User Repository";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    home-manager.url = "github:nix-community/home-manager";
    darwin.url = "github:LnL7/nix-darwin";
    darwin.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = inputs@{ self, nixpkgs, flake-utils, home-manager, darwin, ... }:
    let
      systems = [
        "x86_64-linux"
        "aarch64-linux"
        # "x86_64-darwin"
        "aarch64-darwin"
      ];
      forAllSystems = f: nixpkgs.lib.genAttrs systems f;
    in
    {
      packages = forAllSystems (system:
        let
          pkgs = import nixpkgs {
            inherit system;
            overlays = [ self.overlays.default ];
          };
        in
        import ./pkgs { inherit pkgs; }
      );

      devShells = forAllSystems (system:
        let pkgs = import nixpkgs { inherit system; }; in
        {
          default = pkgs.mkShell {
            packages = with pkgs; [ 
              nixfmt-rfc-style 
            ];
          };
        }
      );

      overlays.default = import ./overlays;

      homeManagerModules.default = import ./modules/home-manager;
      nixosModules.default = import ./modules/nixos;
      darwinModules.default = import ./modules/darwin;
    };
}