booster-install

#!/bin/bash -e

kernels=()
all=0

while read -r line; do
  # line is like usr/lib/modules/5.8.2-arch1-1/vmlinuz
  if [[ ${line} != usr/lib/modules/* ]]; then
    # triggers when it's a change to usr/lib/booster/*
    all=1
    break
  fi

  kernels+=("/${line%/vmlinuz}")
done

if [ "${all}" -eq "1" ]; then
  # find out all installed kernels
  mapfile -d '' kernels < <(find /usr/lib/modules -maxdepth 1 -type d ! -name "modules" -print0)
fi

for kernel in "${kernels[@]}"; do
  if ! pacman -Qqo "${kernel}/pkgbase" > /dev/null 2>&1; then
    # if pkgbase does not belong to any package then skip this kernel
    continue
  fi
  read -r pkgbase < "${kernel}/pkgbase"

  booster build --force --kernel-version ${kernel##/usr/lib/modules/} /boot/booster-${pkgbase}.img &
  install -Dm644 "${kernel}/vmlinuz" "/boot/vmlinuz-${pkgbase}"
done

wait