anchor.diff:  %% @doc Set preferred default config (but don't overwrite if already set)
   -spec install_config(#context{}) -> ok.
   install_config(Context) ->
  +    install_config(get_config(), Context).
  +
  +install_config(Config, Context) ->
       lists:foreach(
           fun({Mod, Key, Value}) ->
               m_config:get(Mod, Key, Context),
  
positive.code: -author("Driebit <tech@driebit.nl").
  
  -export([
      install_config/1
  ]).
  
  -include_lib("zotonic.hrl").
  
negative.code:                     noop
              end
          end,
          Config
      ),
      ok.
  
  