Make keyrings variable

get-pacman-updates.service

@@ -6,6 +6,6 @@ Type=oneshot
 Nice=19
 IOSchedulingClass=2
 IOSchedulingPriority=7
-ExecStart=/usr/bin/pacman -Sy --needed --noconfirm archlinux-keyring
+Environment=KEYRINGS="archlinux-keyring chaotic-keyring"
+ExecStart=/usr/bin/awk 'BEGIN {print "'${KEYRINGS}'"}' | /usr/bin/xargs /usr/bin/pacman -Sy --needed --noconfirm
 ExecStart=/usr/bin/pacman -Suw --noconfirm
-ExecStart=/usr/bin/paccache -r