I developing Packagekit's zypper backend integration with Bonsole and daemonUI for interactively dependency handling. One think I cannot repair is ... dependency handling. Everything looks well. User could get list of problems, select solutions, see new list of problems, select solution and packagekit reports progress correctly. Problem is: if I had select to remove some packages for resolve problems, it will not be removed from the system and new packages is installed.

I put code below:

Code:
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
 *
 * Copyright (c) 2007 Novell, Inc.
 * Copyright (c) 2007 Boyd Timothy <btimothy@gmail.com>
 * Copyright (c) 2007-2008 Stefan Haas <shaas@suse.de>
 * Copyright (c) 2007-2008 Scott Reeves <sreeves@novell.com>
 *
 * Licensed under the GNU General Public License Version 2
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
.....
 ProblemSolutionList::const_iterator it3;
    ResolverProblem problem = **it2;
    it3 = problem.solutions().begin();
    
    for (; it3 != problem.solutions().end(); ++it3) {
    
      if (get_full_resolution_text(**it3) == (*it).selected) {
   
        apply = true;
        ProblemSolution solution = **it3;
        helper->solution_list->push_back(&solution);
      }
    }
  }
  
  if (apply)
  
    helper->resolver->applySolutions(*helper->solution_list);
You can see whole source at: https://github.com/nintyfan/PackageKit . See backends/zypp/pk-zypp-backend.cpp .