> It is a big like the kernel. Just swapping out Linux kernel with a FreeBSD one doesn't quite work.
Well, actually that's the heart of the problem right there. Systemd mangles and complects things. You can replace the kernel (see Debian/kfreebsd and to a lesser extent Illumos). Or you can make a "distro" like cygwin/mingw et al for windows and homebrew for os x. Because there are some more or less well defined interfaces between userland and kernel space. Not just "shit that systemd does that makes sense on recent linux kernels" (afaik there's no plans for supporting something like linux 2.4 on small embedded systems for example).
Well, actually that's the heart of the problem right there. Systemd mangles and complects things. You can replace the kernel (see Debian/kfreebsd and to a lesser extent Illumos). Or you can make a "distro" like cygwin/mingw et al for windows and homebrew for os x. Because there are some more or less well defined interfaces between userland and kernel space. Not just "shit that systemd does that makes sense on recent linux kernels" (afaik there's no plans for supporting something like linux 2.4 on small embedded systems for example).