console log:

linux-2iyu:~ # (zypper lu -t package -t patch || echo 'exit status' $? ; date )
2>&1 |tee -a ~/zypper.log
Loading repository data...
Reading installed packages...

Patches

Repository                 | Name | Category    | Severity | Interactive |
Status | Summary
---------------------------+------+-------------+----------+-------------+--------+---------------------------------
SUSE:Leap-42.3-Update-Test | 7482 | recommended | moderate | ---         |
needed | Recommended update for xfdesktop

Found 1 applicable patch:
1 patch needed (0 security patches)


Package updates

No updates found.
Sun 12 Nov 21:54:29 CET 2017
linux-2iyu:~ # zypper patch
Loading repository data...
Reading installed packages...
Resolving package dependencies...

Problem: xfdesktop-4.12.4-7.1.x86_64 requires xfdesktop-branding = 4.12.4, but
this requirement cannot be provided
  uninstallable providers: xfdesktop-branding-upstream-4.12.4-7.1.noarch[uT]
 Solution 1: Following actions will be done:
  deinstallation of xfdesktop-4.12.2-5.2.x86_64
  deinstallation of xfdesktop-lang-4.12.2-5.2.noarch
  deinstallation of patterns-openSUSE-xfce_basis-20170518-6.1.x86_64
  deinstallation of patterns-openSUSE-xfce_office-20170518-6.1.x86_64
  deinstallation of patterns-openSUSE-xfce-20170518-6.1.x86_64
 Solution 2: deinstallation of xfdesktop-branding-openSUSE-4.12.0-7.2.noarch
 Solution 3: do not install patch:7482-1.noarch
 Solution 4: break xfdesktop-4.12.4-7.1.x86_64 by ignoring some of its
dependencies

Choose from above solutions by number or cancel [1/2/3/4/c] (c): c
linux-2iyu:~ #