Flake issue: error does not provide attributes

Hi all, road blocked for me when installing nix-darwin with home-manager on my system.

nix-info -m

 - system: `"x86_64-darwin"`
 - host os: `Darwin 24.1.0, macOS 10.16`
 - multi-user?: `yes`
 - sandbox: `no`
 - version: `nix-env (Nix) 2.24.10`
 - channels(root): `"nixpkgs"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixpkgs`

edited: I just noticed it says macOS 10.16, I’m on Sequoia 15.1

Nix was installed using sh <(curl -L https://nixos.org/nix/install) to a clean machine.

Here are my files (~/nixconfig)

flake.nix

{
  description = "Worka's Darwin system flake";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    nix-darwin = {
      url = "github:LnL7/nix-darwin";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = { self, nixpkgs, nix-darwin, home-manager }: 
    let
      darwinUser = builtins.getEnv "DARWIN_USER";
      darwinHost = builtins.getEnv "DARWIN_HOST";
      
      workaDarwinSystem = { hostname, username }: nix-darwin.lib.darwinSystem {
        system = "x86_64-darwin";
        modules = [
          ./configuration.nix
          home-manager.darwinModules.home-manager
          {
            networking.hostName = hostname;
            users.users.${username}.home = "/Users/${username}";
            home-manager.useGlobalPkgs = true;
            home-manager.useUserPackages = true;
            home-manager.users.${username} = { pkgs, lib, ... }: 
              import ./home.nix { inherit pkgs lib username; };
          }
        ];
        specialArgs = { 
          inherit (nixpkgs) lib; 
          inherit username; 
        };
      };
    in {
      darwinConfigurations.${darwinHost} = workaDarwinSystem {
        hostname = darwinHost;
        username = darwinUser;
      };
    };
}

home.nix

{ pkgs, lib, username, ... }:

{
  home.packages = with pkgs; [
    neovim
    git
    tree
    ripgrep
    fd
    jq
  ];

  home.username = username;
  home.homeDirectory = lib.mkForce "/Users/${username}";

  home.stateVersion = "24.05";

  # home-manager enable
  programs.home-manager.enable = true;
}

configuration.nix

{ pkgs, ... }:
{
  environment.systemPackages = with pkgs; [
    vim
    git
  ];

  services.nix-daemon.enable = true;
  nix.package = pkgs.nix;

  # zsh enable
  programs.zsh.enable = true;

  # allows unfree packages to be installed
  nixpkgs.config.allowUnfree = true;

  # Finder settings
  system.defaults.finder = {
    AppleShowAllExtensions = true;
    AppleShowAllFiles = true;
    CreateDesktop = false;
    FXEnableExtensionChangeWarning = false;
    ShowPathbar = true;
    ShowStatusBar = true;
  };

  # Dock setting
  system.defaults.dock = {
    autohide = true;
    show-recents = false;
    tilesize = 50;
    magnification = true;
    largesize = 64;
    orientation = "bottom";
    mineffect = "scale";
    launchanim = false;
  };

  system.stateVersion = 5;

  nixpkgs.hostPlatform = "x86_64-darwin";
}

As per nix-darwin documentation the next step is to run this command:
nix run nix-darwin -- switch --flake ~/.config/nix-darwin which I adjust to match the nix run nix-darwin -- switch --flake ~/nixconfig

I tried also with nix run nix-darwin --extra-experimental-features "nix-command flakes" -- switch --flake ~/nixconfig.

Error:
error: flake ‘git+file:///Users/worka/nixconfig’ does not provide attribute ‘packages.x86_64-darwin.darwinConfigurations.Workas-MacBook-Pro.system’, ‘legacyPackages.x86_64-darwin.darwinConfigurations.Workas-MacBook-Pro.system’ or ‘darwinConfigurations.Workas-MacBook-Pro.system’

echo $DARWIN_USER & $DARWIN_HOST is correct.

What went wrong?
Or rather what should I do next if I want to have home-manager installed correctly?

Thanks in advance.

Reinstalled with Determinate System Nix + redo config files using template = WORKING!