{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-unstable";
    nixpkgs-stable.url = "nixpkgs/nixos-23.05";

    home-manager = {
      url = "github:nix-community/home-manager/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    impermanence.url = "github:nix-community/impermanence";
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { self
    , nixpkgs
    , nixpkgs-stable
    , nixos-hardware
    , home-manager
    , impermanence
    , agenix
    , ...
    }@inputs:
    let
      inherit (self) outputs;
    in
    rec {
      overlays = import ./overlays { inherit inputs; };
      nixosModules = import ./modules/nixos;
      homeManagerModules = import ./modules/home-manager;
      secrets = import ./secrets;
      stablePkgs = nixpkgs-stable.legacyPackages."x86_64-linux";

      nixosConfigurations = {
        trantor = nixpkgs.lib.nixosSystem {
          modules = [
            ./hosts/trantor
            home-manager.nixosModules.home-manager
            impermanence.nixosModules.impermanence
            agenix.nixosModules.default
          ];
        };

        capibara = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit stablePkgs impermanence inputs outputs; };
          modules = [
            ./hosts/capibara
            nixos-hardware.nixosModules.lenovo-thinkpad-x230
            home-manager.nixosModules.home-manager
            impermanence.nixosModules.impermanence
            agenix.nixosModules.default
          ];
        };
      };

      homeConfigurations = {

        "rilla@echidna" = home-manager.lib.homeManagerConfiguration {
          pkgs = nixpkgs.legacyPackages.x86_64-linux;
          extraSpecialArgs = { inherit inputs outputs; };
          modules = [ ./hosts/echidna/home.nix ];
        };

      };
    };
}