{
  description = "NixOS configuration";

  inputs = {
    flake-parts.url = "github:hercules-ci/flake-parts";

    nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-25.05";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";

    disko-stable = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs-stable";
    };
    disko-unstable = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };

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

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };

    mailserver = {
      url = "gitlab:simple-nixos-mailserver/nixos-mailserver?ref=nixos-25.05";
      inputs.nixpkgs.follows = "nixpkgs-stable";
    };

    "lolcat++-stable" = {
      url = "github:lolcatpp/lolcatpp";
      inputs.nixpkgs.follows = "nixpkgs-stable";
    };
    "lolcat++-unstable" = {
      url = "github:lolcatpp/lolcatpp";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };

  };

  outputs =
    inputs:
    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
      imports = [
        ./modules/flake/parts.nix
      ];
    };
}