{
  description = "Nixos config flake";

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

    nvf.url = "github:notashelf/nvf";

    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,
    nvf,
    alejandra,
    ...
  } @ inputs: {
    # use "nixos", or your hostname as the name of the configuration
    # it's a better practice than "default" shown in the video

    packages."x86_64-linux".default =
      (nvf.lib.neovimConfiguration {
        pkgs = nixpkgs.legacyPackages."x86_64-linux";
        modules = [./nvf-configuration.nix];
      })
      .neovim;

    nixosConfigurations = {
      nixos = nixpkgs.lib.nixosSystem {
        specialArgs = {inherit inputs;};
        modules = [
          {
            environment.systemPackages = [alejandra.defaultPackage.x86_64-linux];
          }

          ./hosts/hummingbird/configuration.nix
          inputs.home-manager.nixosModules.default
          nvf.nixosModules.default
          ./nvf-configuration.nix
        ];
      };
    };
  };
}