Remove template dir
template/: Remove template dir as it is fully replaced by including archlinux/ci-scripts via gitlab-ci.
This commit is contained in:
David Runge
parent
9146196a1e
commit
4f1a29c4ff
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#!/usr/bin/env bash
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#
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# This script runs a build script in a QEMU VM using the latest Arch Linux installation medium.
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# The build script is expected to create an './output' directory in the project's directory (when running in the VM) and
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# place any build artifacts there.
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# After the build script has finished this script will copy all artifacts to a (local) './output' directory and shutdown
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# the VM.
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#
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# Dependencies:
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# - coreutils
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# - curl
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# - libarchive
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# - qemu-headless
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# - util-linux
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#
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# Considered environment variables:
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# ARCHISO_COW_SPACE_SIZE: The amount of RAM to allocate for the copy-on-write space used by archiso (defaults to 1g -
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# see https://man.archlinux.org/man/tmpfs.5 for understood units)
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# ARCHITECTURE: A string to set the CPU architecture (defaults to x86_64)
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# BUILD_SCRIPT: A script that will be called on the host (defaults to ./build-inside-vm.sh)
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# BUILD_SCRIPT_ARGS: The arguments to BUILD_SCRIPT (as a space delimited list)
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# PACKAGE_LIST: A space delimited list of packages to install to the virtual machine
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# PACMAN_MIRROR: The pacman mirror to use (defaults to "https://mirror.pkgbuild.com")
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# ISO_DIR: The directory on the mirror server to use for locating the latest .iso (defaults to "iso/latest/")
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# QEMU_DISK_SIZE: A string given to fallocate to create a scratch disk to build in (defaults to 8G - see
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# https://man.archlinux.org/man/fallocate.1 for understood units)
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# QEMU_VM_MEMORY: The amount of RAM (in MiB) allocated for the QEMU virtual machine (defaults to 1024)
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# QEMU_LOGIN_TIMEOUT: The maximum time (in seconds) to wait for the initial prompt in the VM to appear (defaults to 60)
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# QEMU_PACKAGES_TIMEOUT: The maximum time (in seconds) to wait for output from pacman when installing packages (defaults
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# to 120)
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# QEMU_BUILD_TIMEOUT: The maximum time (in seconds) to wait for output from the build script (defaults to 1800)
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# QEMU_COPY_ARTIFACTS_TIMEOUT: The maximum time (in seconds) to wait for output from the action of copying the build
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# artifacts from the VM to a local directory (defaults to 60)
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set -euo pipefail
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readonly orig_pwd="${PWD}"
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readonly output="${PWD}/output"
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# variables with presets/ environmental overrides
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arch="${ARCHITECTURE:-x86_64}"
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script="${BUILD_SCRIPT:-./build-inside-vm.sh}"
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script_args="${BUILD_SCRIPT_ARGS:-}"
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mirror="${PACMAN_MIRROR:-https://mirror.pkgbuild.com}"
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iso_dir="${ISO_DIR:-iso/latest/}"
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disk_size="${QEMU_DISK_SIZE:-8G}"
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vm_memory="${QEMU_VM_MEMORY:-1024}"
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login_timeout="${QEMU_LOGIN_TIMEOUT:-60}"
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packages_timeout="${QEMU_PACKAGES_TIMEOUT:-120}"
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build_timeout="${QEMU_BUILD_TIMEOUT:-1800}"
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copy_artifacts_timeout="${QEMU_COPY_ARTIFACTS_TIMEOUT:-60}"
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cow_space_size="${ARCHISO_COW_SPACE_SIZE:-1g}"
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packages="${PACKAGE_LIST:-}"
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# variables without presets/ environmental overrides
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iso=""
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iso_volume_id=""
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tmpdir=""
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tmpdir="$(mktemp --dry-run --directory --tmpdir="${PWD}/tmp")"
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print_section_start() {
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# gitlab collapsible sections start: https://docs.gitlab.com/ee/ci/jobs/#custom-collapsible-sections
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local _section _title
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_section="${1}"
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_title="${2}"
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printf "\e[0Ksection_start:%(%s)T:%s\r\e[0K%s\n" '-1' "${_section}" "${_title}"
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}
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print_section_end() {
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# gitlab collapsible sections end: https://docs.gitlab.com/ee/ci/jobs/#custom-collapsible-sections
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local _section
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_section="${1}"
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printf "\e[0Ksection_end:%(%s)T:%s\r\e[0K\n" '-1' "${_section}"
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}
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init() {
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print_section_start "create_dirs" "Create required directories"
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mkdir -p "${output}" "${tmpdir}"
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cd "${tmpdir}"
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print_section_end "create_dirs"
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}
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# Do some cleanup when the script exits
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cleanup() {
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print_section_start "cleanup" "Cleaning up"
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rm -rf -- "${tmpdir}"
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jobs -p | xargs --no-run-if-empty kill
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print_section_end "cleanup"
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}
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trap cleanup EXIT
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# Use local Arch iso or download the latest iso and extract the relevant files
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prepare_boot() {
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local _latest_iso _iso
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local _isos=()
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print_section_start "prepare_boot" "Prepare boot media"
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# retrieve any local images and sort them
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for _iso in "${orig_pwd}/"archlinux-*-"${arch}.iso"; do
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if [[ -f "${_iso}" ]]; then
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_isos+=("${_iso}")
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fi
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done
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if (( ${#_isos[@]} >= 1 )); then
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iso="$(printf '%s\n' "${_isos[@]}" | sort -r | head -n1)"
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printf "Using local iso: %s\n" "$iso"
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fi
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if (( ${#_isos[@]} < 1 )); then
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_latest_iso="$(
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curl -fs "${mirror}/${iso_dir}" | \
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grep -Eo "archlinux-[0-9]{4}\.[0-9]{2}\.[0-9]{2}-${arch}.iso" | \
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head -n 1
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)"
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if [[ -z "${_latest_iso}" ]]; then
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echo "Error: Could not find latest iso"
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exit 1
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fi
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curl -fO "${mirror}/iso/latest/${_latest_iso}"
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iso="${PWD}/${_latest_iso}"
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fi
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# Extract the kernel and initrd so that a custom kernel cmdline can be set:
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# console=ttyS0, so that the kernel and systemd send output to the serial.
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bsdtar -x -f "${iso}" -C . "arch/boot/${arch}"
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iso_volume_id="$(blkid -s LABEL -o value "${iso}")"
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print_section_end "prepare_boot"
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}
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start_qemu() {
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local _kernel_params=(
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"archisobasedir=arch"
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"archisolabel=${iso_volume_id}"
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"cow_spacesize=${cow_space_size}"
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"ip=dhcp"
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"net.ifnames=0"
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"console=ttyS0"
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"mirror=${mirror}"
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)
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print_section_start "start_qemu" "Start VM using QEMU"
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# Used to communicate with qemu
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mkfifo guest.out guest.in
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# We could use a sparse file but we want to fail early
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fallocate -l "${disk_size}" scratch-disk.img
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{ qemu-system-x86_64 \
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-machine accel=kvm:tcg \
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-smp "$(nproc)" \
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-m "${vm_memory}" \
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-device virtio-net-pci,romfile=,netdev=net0 \
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-netdev user,id=net0 \
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-kernel "arch/boot/${arch}/vmlinuz-linux" \
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-initrd "arch/boot/${arch}/initramfs-linux.img" \
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-append "${_kernel_params[*]}" \
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-drive file=scratch-disk.img,format=raw,if=virtio \
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-drive "file=${iso},format=raw,if=virtio,media=cdrom,read-only=on" \
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-virtfs "local,path=${orig_pwd},mount_tag=host,security_model=none" \
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-monitor none \
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-serial pipe:guest \
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-nographic || kill "${$}"; } &
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# We want to send the output to both stdout (fd1) and fd10 (used by the expect function)
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exec 3>&1 10< <(tee /dev/fd/3 <guest.out)
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print_section_end "start_qemu"
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}
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# Wait for a specific string from qemu
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expect() {
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local length="${#1}"
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local i=0
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local timeout="${2:-30}"
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# We can't use ex: grep as we could end blocking forever, if the string isn't followed by a newline
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while true; do
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# read should never exit with a non-zero exit code,
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# but it can happen if the fd is EOF or it times out
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IFS= read -r -u 10 -n 1 -t "${timeout}" c
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if [[ "${1:${i}:1}" = "${c}" ]]; then
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i="$((i + 1))"
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if [[ "${length}" -eq "${i}" ]]; then
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break
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fi
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else
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i=0
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fi
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done
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}
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# Send string to qemu
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send() {
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echo -en "${1}" >guest.in
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}
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main() {
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local _pacman_command=(
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"pacman -Fy &&"
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"pacman -Syu --ignore"
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"\$(pacman -Fq --machinereadable /usr/lib/modules/"
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"| awk 'BEGIN { FS =\"\\\0\";ORS=\",\" }; { print \$2 }'"
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"| sort -ut , | head -c -2)"
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"--noconfirm --needed ${packages}\n"
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)
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init
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prepare_boot
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start_qemu
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print_section_start "init_build_environment" "Initialize build environment"
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# Login
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expect "archiso login:" "${login_timeout}"
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send "root\n"
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expect "# "
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# Switch to bash and shutdown on error
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send "bash\n"
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expect "# "
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send "trap \"shutdown now\" ERR\n"
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expect "# "
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# Prepare environment
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send "mkdir /mnt/project && mount -t 9p -o trans=virtio host /mnt/project -oversion=9p2000.L\n"
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expect "# "
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send "mkfs.ext4 /dev/vda && mkdir /mnt/scratch-disk/ && mount /dev/vda /mnt/scratch-disk && cd /mnt/scratch-disk\n"
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expect "# "
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send "rsync -a --exclude tmp --exclude .git -- /mnt/project/ .\n"
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expect "# "
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send "mkdir pkg && mount --bind pkg /var/cache/pacman/pkg\n"
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expect "# "
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# Wait for pacman-init
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send "until systemctl is-active pacman-init; do sleep 1; done\n"
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expect "# "
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# Explicitly lookup mirror address as we'd get random failures otherwise during pacman
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send "curl -sSo /dev/null ${mirror}\n"
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expect "# "
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print_section_end "init_build_environment"
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print_section_start "install_packages" "Install packages"
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if [[ -n "${packages}" ]]; then
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# Install required packages
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send "${_pacman_command[*]}"
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expect "# " "${packages_timeout}"
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fi
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print_section_end "install_packages"
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## Start build and copy output to local disk
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send "bash ${script} ${script_args}\n "
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expect "# " "${build_timeout}"
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print_section_start "move_artifacts" "Move artifacts to output directory"
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send "rsync -av -- output /mnt/project/tmp/$(basename "${tmpdir}")/\n"
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expect "# " "${copy_artifacts_timeout}"
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mv -- output/* "${output}/"
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print_section_end "move_artifacts"
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print_section_start "shutdown" "Shutdown the VM"
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# Shutdown the VM
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send "systemctl poweroff -i\n"
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wait
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print_section_end "shutdown"
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}
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main
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@ -1,18 +0,0 @@
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---
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default:
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image: "archlinux:latest"
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.build:
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artifacts:
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name: "output"
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paths:
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- "output/*"
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expire_in: 2d
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reports:
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metrics: metrics.txt
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before_script:
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- pacman -Syu --needed --noconfirm qemu-headless
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script:
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- ./template/build-host.sh
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stage: build
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