{
  inputs = {
    # Core Nixpkgs
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
    # Disk‑partitioning helper
    disko.url = "github:nix-community/disko";
    disko.inputs.nixpkgs.follows = "nixpkgs";
    # Secrets handling
    sops-nix.url = "github:Mic92/sops-nix";
    sops-nix.inputs.nixpkgs.follows = "nixpkgs";
    # Power savings
    autoaspm.url = "github:notthebee/AutoASPM";
    autoaspm.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = { self, nixpkgs, disko, sops-nix, ... }@inputs: let
    # System definition
    system = "x86_64-linux";
    pkgs = import nixpkgs {
      inherit system;
      config.allowUnfree = true;
    };

    # Helper: collect every *.nix file inside ./docker as a list
    dockerModules = let
      dir      = ./docker;
      entries  = builtins.readDir dir;
      names    = builtins.attrNames entries;
      nixNames = builtins.filter (n: builtins.match ".*\\.nix" n != null) names;
    in map (name: "${dir}/${name}") nixNames;
  in {
    nixosConfigurations = {
      numbus-server = nixpkgs.lib.nixosSystem {
        inherit system;
        specialArgs = { inherit inputs; };
        modules = [
          # Disk‑partitioning helper
          disko.nixosModules.disko
          # Secrets handling
          sops-nix.nixosModules.sops
          # Power savings
          inputs.autoaspm.nixosModules.autoaspm
          # Core host configuration
          ./configuration.nix
          ./hardware-configuration.nix
          # Docker services – automatically added from ./docker/*.nix
        ] ++ dockerModules;
      };
    };
  };
}