OpenShadingLanguage from home:frispete:blender:15.4 project
Select Your Operating System
Add repository and install manually
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:frispete:blender:15.4/15.4/home:frispete:blender:15.4.repo zypper refresh zypper install OpenShadingLanguage