libatomic1 from home:aevseev:desktop project
Select Your Operating System
Add repository and install manually
For openSUSE-15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:aevseev:desktop/openSUSE-15.5/home:aevseev:desktop.repo zypper refresh zypper install libatomic1