(Arch Linux) Keep current modules around during kernel upgrade ("30" is in the name to run before DMKS remove ("90" for install) when upgrading kernel)

INSTALL.sh

#/bin/sh
# Run: curl 'https://gist.githubusercontent.com/varqox/a4e5abd490059844e0e521db531a9d8f/raw/e69686e6b63791ef82fc3e182689986ffe838a53/INSTALL.sh' | sudo sh
curl 'https://gist.githubusercontent.com/varqox/a4e5abd490059844e0e521db531a9d8f/raw/85e25433f2f67576ea82b38a7cd461d424376901/%25E2%2581%2584usr%25E2%2581%2584share%25E2%2581%2584libalpm%25E2%2581%2584hooks%25E2%2581%258430-linux-modules-pre.hook' | sudo tee /usr/share/libalpm/hooks/30-linux-modules-pre.hook
curl 'https://gist.githubusercontent.com/varqox/a4e5abd490059844e0e521db531a9d8f/raw/85e25433f2f67576ea82b38a7cd461d424376901/%25E2%2581%2584usr%25E2%2581%2584share%25E2%2581%2584libalpm%25E2%2581%2584hooks%25E2%2581%258490-linux-modules-post.hook' | sudo tee /usr/share/libalpm/hooks/90-linux-modules-post.hook
curl 'https://gist.githubusercontent.com/varqox/a4e5abd490059844e0e521db531a9d8f/raw/85e25433f2f67576ea82b38a7cd461d424376901/%25E2%2581%2584etc%25E2%2581%2584tmpfiles.d%25E2%2581%2584linux-modules-cleanup.conf' | sudo tee /etc/tmpfiles.d/linux-modules-cleanup.conf
curl 'https://gist.githubusercontent.com/varqox/a4e5abd490059844e0e521db531a9d8f/raw/85e25433f2f67576ea82b38a7cd461d424376901/%25E2%2581%2584etc%25E2%2581%2584systemd%25E2%2581%2584system%25E2%2581%2584linux-modules-cleanup.service' | sudo tee /etc/systemd/system/linux-modules-cleanup.service
systemctl enable linux-modules-cleanup.service

⁄etc⁄systemd⁄system⁄linux-modules-cleanup.service

[Unit]
Description=Clean up modules from old kernels

[Service]
Type=oneshot
ExecStart=/bin/bash -exc 'for i in /usr/lib/modules/[0-9]*; do if [[ $${i##*/} = \'%v\' ]] || pacman -Qo "$${i}"; then continue; fi; rsync -AHXal "$${i}" /usr/lib/modules/.old/; rm -rf "$${i}"; done'

[Install]
WantedBy=basic.target

⁄etc⁄tmpfiles.d⁄linux-modules-cleanup.conf

R! /usr/lib/modules/.old/* - - - 4w

⁄usr⁄share⁄libalpm⁄hooks⁄30-linux-modules-pre.hook

[Trigger]
Operation = Upgrade
Type = Package
Target = linux

[Action]
Description = Restore Linux kernel modules
When = PostTransaction
Depends = coreutils
Depends = rsync
Exec = /bin/sh -xc 'KVER="${KVER:-$(uname -r)}"; if test -e "/lib/modules/backup/${KVER}"; then rsync -AHXal --ignore-existing "/lib/modules/backup/${KVER}" /lib/modules/; fi; rm -rf /lib/modules/backup'

⁄usr⁄share⁄libalpm⁄hooks⁄90-linux-modules-post.hook

[Trigger]
Operation = Upgrade
Type = Package
Target = linux

[Action]
Description = Save Linux kernel modules
When = PreTransaction
Depends = rsync
Exec = /bin/sh -c 'KVER="${KVER:-$(uname -r)}"; if test -e "/lib/modules/${KVER}"; then rsync -AHXal --delete-after "/lib/modules/${KVER}" /lib/modules/backup/; fi'