Kernel for archlinux the way it meant to be.
With the expense of additional packaging and unpackaging and without infamous bug.
Note, if you installed linux-rolling after linux-rolling_*, you should manually regenerate grub.cfg.
91-grub.hook will update default grub install (in /boot directory with config at /boot/grub/grub.cfg)
automatically.
systemd-boot and syslinux both use manual configuration, so there is no easy universal update
mechanism.