Is there a supported way to build and install only udev? how about only systemd? only journal? On a gentoo system all three will be seperate compiles and installs. Having to always build all three will make it take longer to install, require more disk space, and generally be annoying.
On to systemd questions; Can I write my own init file in plaintext with gvim for systemd? Is there documentation on how to build these. I like the well documented gentoo setup for this reason. It's very easy to write one if i want to, and I have in the past.