{
  description = "Nixos config flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.11";

    alejandra.url = "github:kamadorueda/alejandra/3.1.0";
    alejandra.inputs.nixpkgs.follows = "nixpkgs";

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

  outputs = {
    self,
    nixpkgs,
    home-manager,
    systems,
    ...
  } @ inputs: let
    inherit (self) outputs;

    # copied from https://github.com/Misterio77/nix-config/blob/main/flake.nix
    lib = nixpkgs.lib // home-manager.lib;
    forEachSystem = f: lib.genAttrs (import systems) (system: f pkgsFor.${system});
    pkgsFor = lib.genAttrs (import systems) (
      system:
        import nixpkgs {
          inherit system;
          config.allowUnfree = true;
        }
    );
  in {
    inherit lib;
    nixosModules = import ./modules/nixos;
    homeManagerModules = import ./modules/home-manager;

    formatter = forEachSystem (pkgs: pkgs.alejandra);

    nixosConfigurations = {
      # Main desktop for games & workstation
      hummingbird = lib.nixosSystem {
        specialArgs = {inherit inputs outputs;};
        modules = [
          ./hosts/hummingbird
        ];
      };
    };

    homeConfigurations = {
      "luna@hummingbird" = lib.homeManagerConfiguration {
        pkgs = pkgsFor.x86_64-linux;
        extraSpecialArgs = {inherit inputs outputs;};
        modules = [
          ./home-manager/luna/hummingbird.nix
        ];
      };
    };
  };
}