If you install the build system on a fresh install of Fedora 36, then you are rewarded with:
> Installing : cendio-build-utils-1.29-1.x86_64 1/1
> Running scriptlet: cendio-build-utils-1.29-1.x86_64 1/1
> warning: %post(cendio-build-utils-1.29-1.x86_64) scriptlet failed, exit status 5
> Error in POSTIN scriptlet in rpm package cendio-build-utils
The reason for the failure is that systemd doesn't see the cenbuild service, despite it being installed in /etc/init.d.
It seems like systemd looks in /etc/rc.d/init.d instead. Usually this is resolved by /etc/init.d being a symlink to /etc/rc.d/init.d. However, that symlink is set up by the chkconfig package, which isn't installed by default.
We should probably look at converting our service to a systemd unit.