{
  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 {
    with myLib;
    formatter = forEachSystem (pkgs: pkgs.alejandra);

    homeManagerModules.default = ./modules/home-manager;
    nixosModules.default = ./modules/nixos;

    nixosConfigurations = {
      # Main desktop for games & workstation
      hummingbird = mkSystem ./hosts/hummingbird;
    };

    homeConfigurations = {
      "luna@hummingbird" = mkHome "x86_64-linux" ./home-manager/luna/home.nix;
    };
  };
}