hm-extra

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

    nix-darwin.url = "github:LnL7/nix-darwin";
    nix-darwin.inputs.nixpkgs.follows = "nixpkgs";

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

    home-manager-extra.url = "git+https://git.segundo.io/nix/hm-extra";
  };

  outputs = inputs @ { self, nix-darwin, nixpkgs, home-manager, home-manager-extra }:
    let
      configuration = { ... }: {
        # Necessary for using flakes on this system.
        nix.settings.experimental-features = "nix-command flakes";
        # Set Git commit hash for darwin-version.
        system.configurationRevision = self.rev or self.dirtyRev or null;
      };
    in
    {
      darwinConfigurations = {
        lenny = nix-darwin.lib.darwinSystem {
          system = "aarch64-darwin";
          specialArgs = inputs;
          modules = [ configuration ] ++ [
            home-manager.darwinModules.home-manager
            { home-manager.sharedModules = [ home-manager-extra.default ]; }
          ];
        };
      };
    };
}