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#!/bin/bash
set -euo pipefail
use_tmpfs=true
CHROOT="/tmp/mkarchroot"
check_available_ram() {
if [ "$(awk '/^MemAvailable:/ { print $2; }' /proc/meminfo)" -lt 50000 ]; then
use_tmpfs=false
fi
}
create_chroot_directory() {
if [ $use_tmpfs ]; then
sudo mount --mkdir -t tmpfs -o defaults,size=20G tmpfs $CHROOT
else
sudo mkdir -p "$CHROOT"
fi
}
create_chroot_environment() {
if [[ ! -d "$CHROOT/root" ]]; then
mkarchroot -M ~/.config/pacman/makepkg.conf "$CHROOT/root" base-devel
fi
}
build_package(){
arch-nspawn "$CHROOT/root" pacman -Syu
makechrootpkg -c -r "$CHROOT" -- -Asf .
makepkg --printsrcinfo >.SRCINFO
}
sign_package(){
PACKAGE="$(makepkg --packagelist)"
gpg --use-agent --output "$PACKAGE.sig" --detach-sign "$PACKAGE"
}
delete_chroot_environment() {
if [ "$(stat -f --format=%T "$CHROOT")" == "btrfs" ]; then
{
sudo btrfs subvolume delete "$CHROOT/root/var/lib/portables"
sudo btrfs subvolume delete "$CHROOT/root/var/lib/machines"
sudo btrfs subvolume delete "$CHROOT/root"
sudo rm -Rf $CHROOT
} >>/dev/null 2>&1
elif [ "$(stat -f --format=%T "$CHROOT")" == "tmpfs" ]; then
sudo umount -f $CHROOT
fi
sudo rm -Rf $CHROOT
}
check_available_ram
create_chroot_directory
create_chroot_environment
build_package
sign_package
delete_chroot_environment
# vim: set ts=4 sw=4 et:
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