You should take a look at xbps, used by Void Linux. It's extremely similar in speed and interface, but tracks shared library dependencies and so supports partia

You should take a look at xbps, used by Void Linux. It's extremely similar in speed and interface, but tracks shared library dependencies and so supports partial updates. xbps-src, roughly equivalent to Arch's makepkg, statelessly builds packages in a chroot which, when writing "templates" (PKGBUILDs), helps make sure you haven't missed any build dependencies simply because they happen to be installed on your system.