ninja from home:hzu:devel:tools:building 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:hzu:devel:tools:building/openSUSE_Tumbleweed/home:hzu:devel:tools:building.repo zypper refresh zypper install ninja