remember to require age for mail

modules/mail/himalaya.nix

@@ -1,5 +1,8 @@
 { config, pkgs, lib, ... }: {
 
+  # Required to place identity file on machine
+  imports = [ ../shell/age.nix ];
+
   options = {
     mailUser = lib.mkOption {
       type = lib.types.str;