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#!/bin/bash -e

kernels=()
dracut_update=0

while read -r line; do
    if [[ $line != 'usr/lib/modules/'+([^/])'/pkgbase' ]]; then
        dracut_update=1 # Dracut files have been updated
        continue
    fi

    read -r pkgbase <"/${line}"
    kernels+=("${pkgbase}")
done

if ((dracut_update)); then
    kernels=()
    for file in /lib/modules/*/pkgbase; do
        if read -r pkgbase &>/dev/null <"$file"; then
            kernels+=("${pkgbase}")
        fi
    done
fi

for kernel in "${kernels[@]}"; do
    path="$(grep -lE "^${kernel}\$" /usr/lib/modules/*/pkgbase)"
    version=$(basename "${path%/pkgbase}")
    read -r pkgbase <"$path"

    echo ":: Building unified kernel image for $kernel-$version"
    dracut -f --uefi --kver "${version}"
done