anchor.diff:          deps_(Name, Vsn, State)
       catch
           _:_ ->
  -            handle_missing_package(Name, Vsn, State)
  +            handle_missing_package({Name, Vsn}, State, fun(State1) -> deps_(Name, Vsn, State1) end)
       end.
   
   deps_(Name, Vsn, State) ->
       ?MODULE:verify_table(State),
       ets:lookup_element(?PACKAGE_TABLE, {ec_cnv:to_binary(Name), ec_cnv:to_binary(Vsn)}, 2).
   
  -handle_missing_package(Name, Vsn, State) ->
  -    ?INFO("Package ~s-~s not found. Fetching registry updates and trying again...", [Name, Vsn]),
  +handle_missing_package(Dep, State, Fun) ->
  +    case Dep of
  +        {Name, Vsn} ->
  +            ?INFO("Package ~s-~s not found. Fetching registry updates and trying again...", [Name, Vsn]);
  +        _ ->
  +            ?INFO("Package ~p not found. Fetching registry updates and trying again...", [Dep])
  +    end,
  +
       {ok, State1} = rebar_prv_update:do(State),
       try
  -        deps_(Name, Vsn, State1)
  +        Fun(State1)
       catch
           _:_ ->
               %% Even after an update the package is still missing, time to error out
  -            throw(?PRV_ERROR({missing_package, ec_cnv:to_binary(Name), ec_cnv:to_binary(Vsn)}))
  +            throw(?PRV_ERROR({missing_package, Dep}))
       end.
   
   registry_dir(State) ->
  
positive.code:     find_highest_matching(undefined, undefined, Dep, Constraint, Table, State).
  
  find_highest_matching(Pkg, PkgVsn, Dep, Constraint, Table, State) ->
      try find_all(Dep, Table, State) of
          {ok, [Vsn]} ->
              handle_single_vsn(Pkg, PkgVsn, Dep, Vsn, Constraint);
  
negative.code:             {ok, Vsn}
      end.
  
  format_error({missing_package, {Name, Vsn}}) ->
      io_lib:format("Package not found in registry: ~s-~s.", [ec_cnv:to_binary(Name), ec_cnv:to_binary(Vsn)]);
  format_error({missing_package, Dep}) ->
      io_lib:format("Package not found in registry: ~p.", [Dep]).
  
  verify_table(State) ->
      ets:info(?PACKAGE_TABLE, named_table) =:= true orelse load_and_verify_version(State).
  