Gradually, systemd dependency is plugged in more and more packages. It sux.
This is mdadm 4.1.2.
# Generated by makepkg 5.2.1
# using fakeroot version 1.24
pkgname = mdadm
pkgbase = mdadm
pkgver = 4.1-2
pkgdesc = A tool for managing/monitoring Linux md device arrays, also known as Software RAID
url = https://git.kernel.org/cgit/utils/mdadm
builddate = 1573668997
packager = Felix Yan <felixonmars@ archlinux.org>
size = 995175
arch = x86_64
license = GPL
replaces = raidtools
conflict = mkinitcpio<0.7
backup = etc/mdadm.conf
depend = glibc
makedepend = git
and this is 4.2.1.
# Generated by makepkg 6.0.1
# using fakeroot version 1.26
pkgname = mdadm
pkgbase = mdadm
pkgver = 4.2-1
pkgdesc = A tool for managing/monitoring Linux md device arrays, also known as Software RA
url = https://git.kernel.org/pub/scm/utils/mdadm
builddate = 1641831172
packager = Tobias Powalowski <tpowa@ archlinux.org>
size = 949208
arch = x86_64
license = GPL
replaces = raidtools
backup = etc/mdadm.conf
depend = glibc
depend = systemd
makedepend = git