you do NOT need to write all your programs together to make them work together.

I'm not sure that this has anything to do with what we were discussion about systemd compatibility with existing management methods but I should point out that in this case udev is still very much supported as a stand-alone component although it is fair to mention that because it shares build scripts with the rest of systemd so there there are additional build time dependancies that aren't explicitly needed by udev alone. This is of interest to developers and Gentoo users but is of no practical effect to anyone else.

> don't reinvent syslog, if there is something that you need, contact the syslog maintainers and ask for the feature if you want it.

http://blog.gerhards.net/2011/11/journald-and-rsyslog.html

Some thoughts on the Journal by the main rsyslogd maintainer. What might be interesting is if a tool like rsyslog would talk the Journal protocol natively, possibly replacing the systemd included implementation for large environments. In the blog post there are several examples given as to why building a new component might be a better approach, because of the things that you can't change for compatibility reasons, even if you improve them in rsyslog.