relink-extramodules-version

#!/bin/bash

relink-version() {
	# searching for latest installed version
	local installed=$(pacman -Qqs linux-rolling_ | sort -n | tail -n 1)
	if [ ! "$installed" ]; then
		# no installed linux-rolling_ left
		return 1
	fi

	local package_version=${installed##linux-rolling_}
	local package_release=${package_version##*_}
	package_version=${package_version%_*}
	package_version=${package_version//_/.}
	local f="/usr/lib/modules/extramodules-ARCH/version-$package_version-$package_release"
	if [ ! -e "$f" ]; then
		echo "Can't find $f. It must belong to $installed"
		return 2
	fi

	ln -sf "$f" /usr/lib/modules/extramodules-ARCH/version
}

linux-rolling-version-removed() {
	if [ "$(readlink  "/usr/lib/modules/extramodules-ARCH/version")" != "$1" ]; then
		# we already have "version" file linked to some installed kernel
		return 0
	fi
	relink-version
}

while read -r line; do
	if [[ "$line" == *version ]]; then
		# plain "linux" package was removed
		relink-version
	else
		# linux-rolling_* package was removed
		linux-rolling-version-removed "/$line"
	fi
done