{
  description = "System configuration for panacea";

  nixConfig = {
    extra-substituters =
      [ "https://cachix.cachix.org" "https://nix-community.cachix.org" ];
    extra-trusted-public-keys = [
      "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-unstable";
    agenix.url = "github:ryantm/agenix";
    agenix.inputs.nixpkgs.follows = "nixpkgs";
    emacs-overlay.url = "github:nix-community/emacs-overlay";
  };

  outputs = { self, nixpkgs, agenix, ... }@inputs:
    let
      system = "x86_64-linux";

      pkgs = import pkgs {
        inherit system;
        config.allowUnfree = true;
      };

      lib = nixpkgs.lib;

    in {
      nixosConfigurations.panacea = lib.nixosSystem {
        inherit system;
        modules = [ (import ./configuration.nix) agenix.nixosModules.age ];
        specialArgs = { inherit inputs; };
      };

    };
}