Guys, I have a source code here, that produces RPM packages for CentOS 6, that includes an Upstart Job and a ugly and minimal Init Script. Now, I have it running on CentOS 7, via systemd, looks good! However, my RPM package for CentOS 7 still includes the useless Upstart and Init Scripts... So, here is the question: How are you guys managing this? I mean, I would like to have 1 single source and 1 SPEC file for both CentOS 6 and 7, but no need to systemd service files on 6 / no need to upstart job files on 7. Cheers! Thiago