{
  inputs = {
    # This is pointing to an unstable release.
    # If you prefer a stable release instead, you can this to the latest number shown here: https://nixos.org/download
    # i.e. nixos-24.11
    # Use `nix flake update` to update the flake to the latest revision of the chosen release channel.
    haumea.url = "github:nix-community/haumea";
    home-manager.url = "github:nix-community/home-manager";
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
  };
  outputs = inputs@{ self, nixpkgs, home-manager, ... }: {
    # NOTE: 'nixos' is the default hostname
    nixosConfigurations = {
      galen = nixpkgs.lib.nixosSystem {
        modules = [
          home-manager.nixosModules.home-manager
          {
            home-manager.useGlobalPkgs = true;
            home-manager.useUserPackages = true;
          }
          ./systems/galen/configuration.nix
        ];
      };
    };
  };
}