@@ -1137,3 +1137,13 @@ targeting Microsoft Hyper-V virtual machines on amd64.
The machine produces a `.vhdx` disk image using the WIC image type
and GRUB as the bootloader. It supports Debian bullseye, bookworm
and trixie.
+
+### "Prefetch" mode for base-apt
+
+Originally, `base-apt` repo is created only during second build when variable
+ISAR_USE_CACHED_BASE_REPO is set. The repo is populated with every package that
+took part in the first build and was cached in DL_DIR.
+
+New ISAR_PREFETCH_BASE_APT variable changes the way `base-apt` is populated.
+Packages added to the repo before running any task that need them. Separate
+`debrepo` script is used for populating base-apt repo.
@@ -86,6 +86,7 @@ apt install \
gettext-base \
git \
python3 \
+ python3-apt \
quilt \
qemu-user-static \
reprepro \
new file mode 100644
@@ -0,0 +1,90 @@
+# This software is a part of Isar.
+# Copyright (C) 2026 ilbers GmbH
+#
+# SPDX-License-Identifier: MIT
+
+# Prefetch to base-apt repo by default
+ISAR_PREFETCH_BASE_APT ??= "1"
+
+DEBREPO_WORKDIR ??= "${DEBREPO_TARGET_DIR}"
+
+debrepo_update_apt_source_list() {
+ [ "${ISAR_PREFETCH_BASE_APT}" != "1" ] && return
+
+ chroot_dir=${1}
+ apt_list=${2}
+
+ flock -x "${REPO_BASE_DIR}/repo.lock" -c "
+ sudo -E chroot ${chroot_dir} /usr/bin/apt-get update \
+ -o Dir::Etc::SourceList=\"sources.list.d/${apt_list}.list\" \
+ -o Dir::Etc::SourceParts=\"-\" \
+ -o APT::Get::List-Cleanup=\"0\"
+ "
+}
+
+debrepo_add_packages() {
+ [ "${ISAR_PREFETCH_BASE_APT}" != "1" ] && return
+ [ "${ISAR_USE_CACHED_BASE_REPO}" = "1" ] && return
+
+ args=""
+ if [ "${1}" = "--srcmode" ]; then
+ args="${args} --srcmode"
+ shift
+ fi
+
+ if [ "${1}" = "--isarapt" ]; then
+ args="${args} --extrarepo=${REPO_ISAR_DIR}/${DISTRO}"
+ shift
+ fi
+
+ workdir="${1}"
+ args="${args} ${2}"
+
+ if [ -n "${GNUPGHOME}" ]; then
+ export GNUPGHOME="${GNUPGHOME}"
+ else
+ export GNUPGHOME="${WORKDIR}/gpghome"
+ fi
+
+ ${SCRIPTSDIR}/debrepo \
+ --workdir="${workdir}" \
+ ${args}
+}
+
+debrepo_parse_dscfile() {
+ [ "${ISAR_PREFETCH_BASE_APT}" != "1" ] && return
+ [ "${ISAR_USE_CACHED_BASE_REPO}" = "1" ] && return
+
+ dscfile="${1}"
+ args=""
+
+ build_arch=${DISTRO_ARCH}
+ if [ "${ISAR_CROSS_COMPILE}" = "1" ]; then
+ build_arch=${HOST_ARCH}
+ fi
+ if [ "${PACKAGE_ARCH}" != "${build_arch}" ]; then
+ args="--crossbuild \
+ crossbuild-essential-${PACKAGE_ARCH}:${build_arch} \
+ dose-distcheck:${build_arch} \
+ libc-dev:${PACKAGE_ARCH} \
+ libstdc++-dev:${PACKAGE_ARCH} \
+ "
+ fi
+
+ args="${args} --extrarepo=${WORKDIR}/isar-apt/${DISTRO}-${DISTRO_ARCH}/apt/${DISTRO}"
+
+ if [ -n "${GNUPGHOME}" ]; then
+ export GNUPGHOME="${GNUPGHOME}"
+ else
+ export GNUPGHOME="${WORKDIR}/gpghome"
+ fi
+
+ if [ -n "${DEB_BUILD_PROFILES}" ]; then
+ export DEB_BUILD_PROFILES="${DEB_BUILD_PROFILES}"
+ fi
+
+ ${SCRIPTSDIR}/debrepo \
+ --workdir="${DEBREPO_WORKDIR}" \
+ --dscfile="${dscfile}" \
+ ${args}
+}
@@ -67,6 +67,11 @@ SDKCHROOT_DIR = "${DEPLOY_DIR_SDKCHROOT}/${BPN}-${DISTRO}-${MACHINE}"
CACHE = "${TMPDIR}/cache"
KERNEL_FILE ?= "${@ 'vmlinux' if d.getVar('DISTRO_ARCH') in ['mipsel', 'riscv64', 'arm64'] else 'vmlinuz'}"
+# debrepo config
+DEBREPO_DIR = "${TOPDIR}/debrepo"
+DEBREPO_HOST_DIR = "${DEBREPO_DIR}/${HOST_DISTRO}-${HOST_ARCH}_${DISTRO}-${DISTRO_ARCH}"
+DEBREPO_TARGET_DIR = "${DEBREPO_DIR}/${DISTRO}-${DISTRO_ARCH}"
+
MACHINEOVERRIDES ?= "${MACHINE}"
DISTROOVERRIDES ?= "${DISTRO}"
OVERRIDES = "${PACKAGE_ARCH}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${BASE_DISTRO_CODENAME}::${BASE_DISTRO}:${ISAR_CHROOT_MODE}:forcevariable"