{
  description = "Home Manager configuration of alex";

  inputs = {
    # Specify the source of Home Manager and Nixpkgs.
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    catppuccin.url = "github:catppuccin/nix";
    nixos-hardware.url = "github:NixOS/nixos-hardware";
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = inputs @ { nixpkgs, catppuccin, home-manager, agenix, nixos-hardware, ... }:
  let
    system = "x86_64-linux";
    pkgs = nixpkgs.legacyPackages.${system};
  in {

    # TODO optimize HM config (currently just otter / Framework)
    homeConfigurations."alex" = home-manager.lib.homeManagerConfiguration {
      inherit pkgs;

      # Specify your home configuration modules here, for example,
      # the path to your home.nix.
      modules = [ 
        ./home/otter 
        catppuccin.homeManagerModules.catppuccin
      ];

      # Optionally use extraSpecialArgs
      # to pass through arguments to home.nix
    };

    nixosConfigurations = let 
      username = "alex";
      #system = "x86_64-linux";
      nixosSystem = import ./lib/nixosSystem.nix;
      home-module = import ./home/ferret;
      nixos-modules =./nixos/ferret;
      ferret_modules = {
        inherit nixos-modules;
        inherit home-module;
      };

      otter_modules = {
        nixos-modules = ./nixos/otter;
        home-module = ./home/otter;
      };
      args = {
        inherit inputs;
        inherit nixpkgs;
        inherit home-manager;
        inherit system;
        specialArgs = {
          inherit inputs;
          inherit username;
        };
      };
    in {
      ferret = nixosSystem (ferret_modules // args);
      otter = nixosSystem (otter_modules // args);
    }; 
  };
}