{
  description = "Harald Hoyer's Nix Configurations";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";

    # NixPkgs Unstable (nixos-unstable)
    unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    lanzaboote = {
      url = "github:nix-community/lanzaboote/v0.3.0";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    snowfall-lib = {
      url = "github:snowfallorg/lib?rev=5082cdac87c5fd99ef2ee5989d9f73888bc5ed14";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # macOS Support (master)
    darwin.url = "github:lnl7/nix-darwin";
    darwin.inputs.nixpkgs.follows = "nixpkgs";

    home-manager.url = "github:nix-community/home-manager/release-23.11";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    neovim-flake.url = "github:notashelf/neovim-flake/v0.5";
    neovim-flake.inputs.nixpkgs.follows = "nixpkgs";

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

    sops-nix.url = "github:Mic92/sops-nix";
    sops-nix.inputs.nixpkgs.follows = "nixpkgs";

    nixsgx-flake = {
      url = "github:matter-labs/nixsgx";
      # inputs.nixpkgs.follows = "nixpkgs";
    };

    simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-23.11";
    simple-nixos-mailserver.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = inputs:
    let
      lib = inputs.snowfall-lib.mkLib {
        inherit inputs;
        src = ./.;

        snowfall.namespace = "metacfg";

        snowfall = {
          meta = {
            name = "metacfg";
            title = "Metacfg";
          };
        };
      };
    in
    lib.mkFlake {
      channels-config = {
        allowUnfree = true;
      };

      homes.modules = with inputs; [
        neovim-flake.homeManagerModules.default
      ];

      systems.modules.nixos = with inputs; [
        lanzaboote.nixosModules.lanzaboote
        home-manager.nixosModules.home-manager
        sops-nix.nixosModules.sops
        disko.nixosModules.disko
        simple-nixos-mailserver.nixosModule
      ];

      overlays = with inputs; [
        nixsgx-flake.overlays.default
      ];

      outputs-builder = channels: {
        formatter = channels.nixpkgs.nixpkgs-fmt;
        defaultApp = lib.flake-utils-plus.mkApp { drv = channels.nixpkgs.home-manager; };
      };

    };
}