{
  description = "Nixos config flake";

  inputs = {
    # base packages
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    # encrypt files that contain secreats that I would like to not encrypt
    sops-nix.url = "github:Mic92/sops-nix";

    # declairtive disk configuration
    disko = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # managment per user
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # repo of hardware configs for prebuilt systems
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";

    # vscode extensions 
    nix-vscode-extensions = {
      url = "github:nix-community/nix-vscode-extensions";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, disko, nixos-hardware, ... }@inputs:
    let
      forEachSystem = nixpkgs.lib.genAttrs [
        "aarch64-darwin"
        "aarch64-linux"
        "x86_64-darwin"
        "x86_64-linux"
      ];
      forEachPkgs = lambda: forEachSystem (system: lambda nixpkgs.legacyPackages.${system});
    in
    {
      packages = forEachPkgs (pkgs: import ./pkgs { inherit pkgs; });

      nixosConfigurations = {
      	# Leyla Laptop
        horizon = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };
          modules = [ 
            ./hosts/horizon/configuration.nix
            inputs.home-manager.nixosModules.default
            nixos-hardware.nixosModules.framework-11th-gen-intel
          ];
        };
        # Leyla Desktop
        twilight = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };
          modules = [ 
            ./hosts/twilight/configuration.nix
            inputs.home-manager.nixosModules.default
          ];
        };
        # NAS Service
        defiant = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit inputs; };
          modules = [
            disko.nixosModules.disko
            ./hosts/defiant/disko-config.nix
            ./hosts/defiant/configuration.nix
          ];
        };
      };
    };
}