user_default

%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(user_default).
-compile(export_all).

-include("/srv/piab/mounts/oc_erchef/deps/chef_objects/include/chef_types.hrl").
-include("/srv/piab/mounts/oc_erchef/deps/oc_chef_authz/include/oc_chef_authz.hrl").
-include("/srv/piab/mounts/oc_erchef/deps/oc_chef_authz/include/oc_chef_types.hrl").
%-include("/srv/piab/mounts/oc_erchef/deps/oc_chef_wm/include/oc_chef_wm.hrl").
%-include("/srv/piab/mounts/oc_erchef/deps/chef_wm/include/chef_wm.hrl").

kill_cleanup() ->
         exit(whereis(oc_chef_authz_cleanup), die).

update_mod(Mod) ->
  Info = Mod:module_info(),
  CompileInfo = proplists:get_value(compile, Info),
  Path = proplists:get_value(source, CompileInfo),
  Options = [{d, 'BASE_RESOURCE', oc_chef_wm_base},
             {d, 'OC_CHEF'},
             {debug_info, debug_info},
             {d, 'BASE_ROUTES', oc_chef_wm_routes},
             {d,'CHEF_WM_DARKLAUNCH',xdarklaunch_req},
             {d,'CHEF_DB_DARKLAUNCH',xdarklaunch_req},
             {parse_transform,lager_transform},
             {i, "include"},
             {i, "/srv/piab/mounts/oc_erchef/deps/oc_chef_wm/include"},
             {i, "/srv/piab/mounts/oc_erchef/deps/chef_wm/include"},
             {i, "/srv/piab/mounts/oc_erchef/deps/chef_db/include"},
             {i, "/srv/piab/mounts/oc_erchef/deps/chef_objects/include"},
             {i, "/srv/piab/mounts/oc_erchef/deps/oc_chef_authz/include"},
             binary],

  case compile:file(Path, Options) of
      {ok, _Mod, Bin, Warnings} ->
          reload(Mod, Path, Bin),
          Warnings;

      {ok, _Mod, Bin} ->
          reload(Mod, Path, Bin),
          ok;
      Error ->
          Error
    end.

reload(Mod, Path, Binary) ->
    code:delete(Mod),
    code:purge(Mod),
    code:load_binary(Mod, Path, Binary).

I think you can build the beam with erlc, and drop it into /srv/piab/mount/oc_erchef/rel, then launch oc_erchef console from there and it wll pick it up.  Once leaded you can update_mod(modified-mod-name) from the console