https://www.archlinux.org/todo/base-group-removal/

PKGBUILD

@@ -2,13 +2,12 @@
 # Contributor: Tom Gundersen <teg@jklm.no>
 
 pkgname=filesystem
-pkgver=2019.05
-pkgrel=2
+pkgver=2019.10
+pkgrel=1
 pkgdesc='Base Arch Linux files'
 arch=('x86_64')
 license=('GPL')
 url='https://www.archlinux.org'
-groups=('base')
 depends=('iana-etc')
 backup=('etc/crypttab' 'etc/fstab' 'etc/group' 'etc/gshadow' 'etc/host.conf'
         'etc/hosts' 'etc/issue' 'etc/ld.so.conf' 'etc/motd' 'etc/nsswitch.conf'