let
  inputs = import ./inputs.nix;
  inherit (inputs) nixpkgs;
  inherit (nixpkgs) lib;
  recursivelyImport = import ./recursively-import.nix { inherit lib; };
in
{
  systems =
    definitions:
    lib.mapAttrs (
      name: info:
      lib.nixosSystem {
        specialArgs = {
          inherit inputs;
          inherit (info) system;
          # annoyingly, this is the only dependency on `system` from the entrypoint
          localPkgs = lib.packagesFromDirectoryRecursive {
            inherit (inputs.nixpkgs.legacyPackages.${info.system}) callPackage;
            directory = ../pkgs;
          };
          scope = import ./scope.nix { inherit lib; };
          mainUser = info.username;
          getPkgs = builtins.attrValues;
        };
        modules = [
          inputs.arbys.nixosModules.arbys
          inputs.hjem.nixosModules.hjem
          ({ scope, ... }: scope "hjem" {
            users.${info.username}.enable = true;
            extraModules = [
              inputs.hjem-rum.hjemModules.hjem-rum
            ]
            # alias base hjem options to `rum` so we can alias them all together after
            ++ (map (f: lib.mkAliasOptionModule [ "rum" f ] [ f ]) [
              "packages"
              "files"
              "xdg"
            ]);
          })
          # alias hjem-rum options to `user`
          (lib.mkAliasOptionModule [ "user" ] [ "hjem" "users" info.username "rum" ])
        ]
        ++ (recursivelyImport info.imports);
      }
    ) definitions;
}