nixConfig/nixos/flake-module.nix

# copied and adopted from maralorns config

# This automatically searches for nixos configs in ./machines/${name}/configuration.nix
# and exposes them as outputs.nixosConfigurations.${name}
{ withSystem, lib, inputs, ... }: {
  flake = {
    nixosConfigurations = withSystem "x86_64-linux" ({ pkgs, ... }:
    let
      machines = builtins.attrNames (builtins.readDir ./machines);
      makeSystem = name:
        pkgs.nixos {
          imports = [
            (import (./. + "/machines/${name}/configuration.nix") inputs)
            inputs.sops-nix.nixosModules.sops
            inputs.impermanence.nixosModules.impermanence
          ];
        };
    in lib.genAttrs machines makeSystem);
  };
}