Initial commit

chroot-build

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+# SPDX-FileCopyrightText: Christian Schendel
+# SPDX-License-Identifier: 0BSD
+
+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 "$CHROOT/root" pacman -Syu
+    if makechrootpkg -c -r "$CHROOT" -- -Asf . ; then
+        makepkg --printsrcinfo >.SRCINFO
+    else
+        delete_chroot_environment && echo -e "\n\e[1;31m==> BUILD FAILED: \e[1;37m$CHROOT removed\e[0m " && exit 1
+    fi
+}
+
+sign_package(){
+    PACKAGE="$(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: