{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    nixpkgs-stable.url = "github:nixos/nixpkgs?ref=nixos-25.11";

    hardware.url = "github:nixos/nixos-hardware";
    flake-parts.url = "github:hercules-ci/flake-parts";

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

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

    colmena = {
      url = "github:zhaofengli/colmena";
      inputs = {
        nixpkgs.follows = "nixpkgs";
        stable.follows = "nixpkgs-stable";
      };
    };

    sops-nix = {
      url = "github:mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { flake-parts, ... }@inputs:
    flake-parts.lib.mkFlake { inherit inputs; } {
      systems = [
        "aarch64-darwin"
        "aarch64-linux"
        "x86_64-darwin"
        "x86_64-linux"
      ];

      imports = [
        ./modules/flake-module.nix
        ./roles/flake-module.nix
        ./systems/flake-module.nix
      ];

      perSystem =
        { pkgs, inputs', ... }:
        {
          formatter = pkgs.nixfmt-tree;

          devShells.default = pkgs.mkShell {
            packages = with pkgs; [
              inputs'.colmena.packages.colmena
              nixos-anywhere
              sops
            ];
          };
        };
    };
}