dia from home:fsirl:dia project
Select Your Operating System
Add repository and install manually
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:fsirl:dia/15.6/home:fsirl:dia.repo zypper refresh zypper install dia
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:fsirl:dia/15.5/home:fsirl:dia.repo zypper refresh zypper install dia