Comment # 1 on bug 1126598 from Stanislav Litvinov

sudo zypper lr
Repository priorities in effect:                (See 'zypper lr -P' for
details)
      90 (raised priority)  :  1 repository  
      99 (default priority) :  5 repositories

# | Alias                      | Name                       | Enabled | GPG
Check | Refresh
--+----------------------------+----------------------------+---------+-----------+--------
1 | /leap/15.0/repo/non-oss/   | /leap/15.0/repo/non-oss/   | Yes     | (r )
Yes  | Yes    
2 | /leap/15.0/repo/oss/       | /leap/15.0/repo/oss/       | Yes     | (r )
Yes  | Yes    
3 | /update/leap/15.0/non-oss/ | /update/leap/15.0/non-oss/ | Yes     | (r )
Yes  | Yes    
4 | /update/leap/15.0/oss/     | /update/leap/15.0/oss/     | Yes     | (r )
Yes  | Yes    
5 | packman                    | packman                    | Yes     | (r )
Yes  | Yes    
6 | packman-essentials         | packman-essentials         | Yes     | (r )
Yes  | Yes