ALPM (pacman) hook compiling dkms modules when necessary

dkms

#!/bin/bash

list_installed_kernels() {
	for i in /usr/lib/modules/*/build/Kconfig; do 
		sed -rn 's#/usr/lib/modules/(.*)/build/Kconfig#\1#p' <<< "$i"
	done
}

build_all_modules() {
	while read kernel; do
		dkms autoinstall -k "$kernel"
	done
}

# Building missing modules for all installed kernels
list_installed_kernels | build_all_modules

dkms-load.service

[Unit]
Description=Load DKMS modules

[Service]
Type=oneshot
RemainAfterExit=yes
#ExecStart=/bin/sh -c 'for i in $(find /var/lib/dkms -iname "*.ko" | grep $(uname -r)); do m="$(basename "$i")"; modprobe -b "${m%.*}"; done'
ExecStart=/bin/sh -c 'for i in $$(find /var/lib/dkms -iname "*.ko" | grep $$(uname -r)); do m="$$(basename "$i")"; modprobe -b "$${m%.*}"; done'
ExecStop=/usr/lib/systemd/scripts/dkms stop

[Install]
WantedBy=multi-user.target

dkms.hook

[Trigger]
Operation = Install
Operation = Upgrade
Type = File
Target = usr/src/*
Target = usr/lib/modules/*

[Action]
Description = Building missing modules for all installed kernels
When = PostTransaction
Exec = /etc/pacman.d/hooks.bin/dkms
Depends = dkms