add core configuration

modules/users/default.nix

@@ -0,0 +1,17 @@
+{lib, ...}: let
+  # recursively construct attr-set of a directory
+  getDir = dir:
+    lib.mapAttrs (file: type:
+      if type == "directory"
+      then getDir "${dir}/${file}"
+      else type) (
+      builtins.readDir dir
+    );
+  files = dir: lib.collect lib.isString (lib.mapAttrsRecursive (path: type: lib.concatStringsSep "/" path) (getDir dir));
+  validFiles = dir:
+    map (file: ./. + "/${file}") (
+      lib.filter (file: lib.hasSuffix ".nix" file && file != "default.nix") (files dir)
+    );
+in {
+  imports = validFiles ./.;
+}

modules/users/lily.nix

@@ -0,0 +1,21 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.lily.users.lily;
+  #   interpolated_secrets = import ../../secrets/interpolated_secrets.nix;
+in {
+  options.lily.users.lily.enable = lib.mkEnableOption "activate user lily";
+  config = lib.mkIf cfg.enable {
+    users.users.lily = {
+      home = "/home/lily";
+      isNormalUser = true;
+      #   hashedPasswordFile = lib.mkIf config.lily.sops config.sops.secrets."users/lily/hashedPassword".path;
+      extraGroups = ["wheel" "openrazer" "docker"] ++ lib.optionals config.networking.networkmanager.enable ["networkmanager"];
+      shell = pkgs.zsh;
+    };
+    # sops.secrets."users/lily/hashedPassword" = lib.mkIf config.lily.sops { neededForUsers = true; };
+  };
+}