restructure system configuration

system/user/ooks/default.nix

@@ -0,0 +1,23 @@
+{ pkgs, config, ... }:
+let ifTheyExist = groups: builtins.filter (group: builtins.hasAttr group config.users.groups) groups;
+in
+{
+  users.users.ooks = {
+    isNormalUser = true;
+    shell = pkgs.fish;
+    extraGroups = [
+    "wheel"
+    "video"
+    "audio"
+    ] ++ ifTheyExist [
+    "git"
+    "network"
+    "libvirtd"
+    "deluge"
+    ];
+
+  packages = [ pkgs.home-manager ];
+  };
+
+  home-manager.users.ooks = import ../../../../home/user/ooks/${config.networking.hostName};
+}