{
  inputs = {
    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
    tangled = {
      url = "git+https://tangled.sh/@tangled.sh/core";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs =
    { self, ... }@inputs:
    let
      inherit (inputs) nixpkgs;
      inherit (inputs.nixpkgs) lib;
      specialArgs = { inherit inputs; };
      forAllSystems =
        function:
        lib.genAttrs lib.systems.flakeExposed (
          system:
          function (
            import nixpkgs {
              inherit system;
              config.allowUnfree = true;
            }
          )
        );
      dumb-manager = import ./lib/dumb-manager.nix;
    in
    {
      nixosConfigurations = {
        hetzner = nixpkgs.lib.nixosSystem {
          inherit specialArgs;
          modules = [
	          inputs.tangled.nixosModules.knot
            ./common
            ./hetzner
          ];
        };
        riptide = nixpkgs.lib.nixosSystem {
          inherit specialArgs;
          modules = [
            ./common
            ./riptide
          ];
        };
      };
      packages = forAllSystems (pkgs: {
        mac-home = dumb-manager.configuration {
          inherit pkgs nixpkgs;
          module = ./home/mac;
        };
      });
      formatter = forAllSystems (pkgs: pkgs.nixfmt-rfc-style);
    };
}