opt-libqt5-qtbase from home:NotKit:Halium project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:NotKit:Halium/openSUSE_Tumbleweed/home:NotKit:Halium.repo zypper refresh zypper install opt-libqt5-qtbase