example for how to install linux-rt-lts and zfs-dkms

linux-rt-lts and zfs-dkms.sh

if ! grep -qF "[archzfs]" /etc/pacman.conf; then
cat >> /etc/pacman.conf << 'EOF'

[archzfs]
Server = http://archzfs.com/$repo/x86_64
Server = http://mirror.sum7.eu/archlinux/archzfs/$repo/x86_64
Server = https://mirror.biocrafting.net/archlinux/archzfs/$repo/x86_64
EOF
fi
pacman-key -r F75D9D76
pacman-key --lsign-key F75D9D76

cat > /usr/share/libalpm/hooks/69-zfs-dkms.hook << 'EOF'
[Trigger]
Operation = Install
Operation = Upgrade
Type = Package
Target = zfs-dkms

[Action]
Description = GPL-ify zfs-dkms
When = PostTransaction
Exec = /bin/sh -c "sed -i 's/CDDL/GPL/g' $(pacman -Ql zfs-dkms | grep META | cut -d' ' -f2)"
EOF
# https://github.com/openzfs/zfs/issues/15540

pacman -Syyu --noconfirm \
zfs-dkms zfs-utils \
linux-rt-lts linux-rt-lts-headers

This is great. Works for linux-rpi on aarch64 as well.