How localize summary and description in RPM spec files?

English Open Build Service (OBS)
1

Hello.

I’m localizing the summary and the package description in my RPM spec file. Example:

Summary: ABC
Summary(de.UTF-8): DEF

%description
ABC

%description -l de.UTF-8
DEF

However, when I add the build service repository to YaST and display packages, than YaST does never use the localized name (also YaST itself is, in this case, used in german), but always the english names.

Am I doing wrong something? Why doesn’t this work?