Which init system for Debian?

There is already porting that needs to happen for non-Linux Debian though and unavoidable platform-specific differences between Debian on BSD, and Debian on Solaris. Like Josh said above, running launchd on BSD, SMF on Solaris and systemd on Linux makes sense as these are core technologies which are tied to and can use the unique features of the underlying kernel. This is not something which can be abstracted away without losing important capabilities. Having a different startup config file for each platform is reasonable, requiring three different startup configs for each platform is unreasonable.