halfway add vacufuncs to nix-on-droid config

nix-on-droid.nix

@@ -1,7 +1,7 @@
 { config, lib, pkgs, inputs, ... }:
 
 {
-  imports = [ ./common/module.nix ];
+  imports = [ ./common/module.nix ./common/commands.nix ];
   environment.packages = config.vacu.packageList;
 
   environment.etc."resolv.conf".text = lib.mkForce ''
@@ -35,4 +35,5 @@
   #specific to the particular install; avoids impurity
   #user.gid = 10287;
   #user.uid = 10287;
+  vacu.shell.functionsDir = "${config.user.home}/.nix-profile/share/vacufuncs";
 }