Comment 3 for bug 871030

Well, this logic already exists in apport:

                if 'dpkg: error' in dupe_sig and line.startswith(' '):
                    if 'trying to overwrite' in line:
                        conflict_pkg = re.search('in package (.*) ', line)
                        if conflict_pkg and not apport.packaging.is_distro_package(conflict_pkg.group(1)):
                            report['UnreportableReason'] = _('An Ubuntu package has a file conflict with a package that is not a genuine Ubuntu package')
                        add_tag(report, 'package-conflict')