anchor.diff:                                                     {desc, "Upgrade project dependencies. Mentioning no application "
                                                             "will upgrade all dependencies. To upgrade specific dependencies, "
                                                             "their names can be listed in the command."},
  -                                                   {opts, [
  +                                                   {opts, [{all, $a, "all", undefined, "Upgrade all dependencies."},
                                                             {package, undefined, undefined, string,
  -                                                           "List of packages to upgrade. If not specified, all dependencies are upgraded."}
  +                                                           "List of packages to upgrade."}
                                                             ]}])),
       {ok, State1}.
   
  
positive.code: format_error({checkout_dependency, Name}) ->
      io_lib:format("Dependency ~ts is a checkout dependency under _checkouts/ and checkouts cannot be upgraded.",
                    [Name]);
  format_error(Reason) ->
      io_lib:format("~p", [Reason]).
  
  %% fetch updates for package deps that have been unlocked for upgrade
  update_pkg_deps([], _, _) ->
  
negative.code:     ProfileDeps = rebar_state:get(State, {deps, default}, []),
      Deps = [Dep || Dep <- TopDeps ++ ProfileDeps, % TopDeps > ProfileDeps
                     is_atom(Dep) orelse is_atom(element(1, Dep))],
      Names = case handle_args(State) of
          {false, undefined} -> throw(?PRV_ERROR(no_arg));
          {true, _} -> [Name || {Name, _, 0} <- Locks];
          {false, Packages} -> Bin = rebar_utils:to_binary(Packages),
              lists:usort(re:split(Bin, <<" *, *">>, [trim, unicode]))
          end,
      DepsDict = deps_dict(rebar_state:all_deps(State)),
      AltDeps = find_non_default_deps(Deps, State),
      FilteredNames = cull_default_names_if_profiles(Names, Deps, State),
  