{ inputs, pkgs, lib, ... }:

let
  inherit (inputs) home-manager;

in rec {
  mkNixosConfig = { system ? "x86_64-linux", hostname, username ? "christoph", extraModules ? [ ] }:
  lib.nixosSystem {
    inherit system;

    # Make our inputs available to the configuration.nix (for importing modules)
    specialArgs = { inherit inputs; };

    modules = builtins.concatLists [
      [
        # Replace the pkgs to include overlays/unfree
        { nixpkgs.pkgs = pkgs; }

        # Main config file for all configs/hosts
        ../nixos/configuration.nix

        # Host specifig config file
        ../nixos/${hostname}
      ]

      extraModules

      # I included the home config statically like this as I am the only user
      # I would have liked to make it more flexible (for multiple users on the same host)
      # but I failed because nix stopped autoinjecting the required arguments and I didn't
      # know how to handle that...
      [
        home-manager.nixosModules.home-manager {

          # Use systems pkgs, disables nixpkgs.* options in home.nix
          home-manager.useGlobalPkgs = true;

          # Enable installing packages through users.christoph.packages to /etc/profiles instead of ~/.nix-profile
          home-manager.useUserPackages = true;

          # User specific config file
          # Is marked as error but correct
          home-manager.users.${username}.imports = [ ../home/${username} ];
        }
      ]
    ];
  };
}