[bonzini]

Jack does not overlap with PulseAudio. Pipewire does, but it came later and has the explicit purpose of unifying Jack and PulseAudio.

Upstart is decidedly inferior to systemd; the event-based architecture is much harder to understand and apply than the target/dependency architecture of systemd. And systemd is in use in distros ranging from embedded (LibreELEC) to enterprise server, it must be doing _something_ right...

[CameronNemo]

Regarding the event driven architecture: it is far easier to understand than systemd's dependency system. But it is indeed more difficult to apply, particularly because it is a departure from how most systems work currently and in the sysvinit past.

I enjoy the architecture, and hope to continue developing Upstart/startup or at least work with a similar model.