Re: [PATCH v2] dpkg: Restore support for replacing pre-installed packages in sbuild-chroot

[Jan Kiszka <jan.kiszka@siemens.com>]

On 02.01.24 08:55, 'Jan Kiszka' via isar-users wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
> 
> During the migration to sbuild, support for using self-built packages in
> the build environment was lost if those were already part of the
> sbuild-chroot. This restores it by adding --apt-distupgrade to the

This patch does more than I originally expected: It is currently not
even possible to pull additional packages into an sbuild-chroot from
isar-apt. As that feature is a precondition for replacing packages, it
comes implicitly with these changes - widely obsoleting the approach
Srinu was taking in
https://groups.google.com/g/isar-users/c/TAtC1wA68mA/m/lI-ci5LrAgAJ.

Jan

> sbuild call. But that is not enough because sbuild will only upgrade
> packages from already configured sources, not those specified via
> --extra-repository. We therefore have to switch back to configuring
> isar-apt during sbuild-chroot creation.
> 
> As rootfs_configure_isar_apt configures the isar repo under
> /isar-apt, we bind-mount the one in /home/builder/${PN} to that folder.
> Another difference is that we now need to run apt-get update explicitly,
> but only for isar-apt.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
> 
> Changes in v2:
>  - fix regressions caused by adding isar-apt to more schroots than
>    needed
> 
>  meta/classes/dpkg-base.bbclass                | 22 ++++++++++---------
>  meta/classes/dpkg.bbclass                     |  5 +++--
>  .../sbuild-chroot/sbuild-chroot.inc           |  2 --
>  3 files changed, 15 insertions(+), 14 deletions(-)
> 
> diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
> index 7b054d3f..6a6964b2 100644
> --- a/meta/classes/dpkg-base.bbclass
> +++ b/meta/classes/dpkg-base.bbclass
> @@ -19,8 +19,6 @@ DEPENDS:append:riscv64 = "${@' crossbuild-essential-riscv64' if d.getVar('ISAR_C
>  DEB_BUILD_PROFILES ?= ""
>  DEB_BUILD_OPTIONS ?= ""
>  
> -ISAR_APT_REPO ?= "deb [trusted=yes] file:///home/builder/${PN}/isar-apt/${DISTRO}-${DISTRO_ARCH}/apt/${DISTRO} ${DEBDISTRONAME} main"
> -
>  python do_adjust_git() {
>      import subprocess
>  
> @@ -221,8 +219,17 @@ def isar_export_build_settings(d):
>      os.environ['DEB_BUILD_OPTIONS']  = isar_deb_build_options(d)
>      os.environ['DEB_BUILD_PROFILES'] = isar_deb_build_profiles(d)
>  
> +dpkg_schroot_create_configs() {
> +    schroot_create_configs
> +    sudo -s <<'EOSUDO'
> +        sbuild_fstab="${SBUILD_CONF_DIR}/fstab"
> +        fstab_isarapt="${WORKDIR}/isar-apt/${DISTRO}-${DISTRO_ARCH}/apt/${DISTRO} /isar-apt none rw,bind 0 0"
> +        grep -qxF "${fstab_isarapt}" ${sbuild_fstab} || echo "${fstab_isarapt}" >> ${sbuild_fstab}
> +EOSUDO
> +}
> +
>  python do_dpkg_build() {
> -    bb.build.exec_func('schroot_create_configs', d)
> +    bb.build.exec_func('dpkg_schroot_create_configs', d)
>      try:
>          bb.build.exec_func("dpkg_runbuild", d)
>      finally:
> @@ -297,11 +304,9 @@ python do_devshell() {
>          bb.build.exec_func('schroot_configure_ccache', d)
>  
>      schroot = d.getVar('SBUILD_CHROOT')
> -    isar_apt = d.getVar('ISAR_APT_REPO')
>      pkg_arch = d.getVar('PACKAGE_ARCH')
>      build_arch = d.getVar('BUILD_ARCH')
>      pp_pps = os.path.join(d.getVar('PP'), d.getVar('PPS'))
> -    debdistroname = d.getVar('DEBDISTRONAME')
>  
>      install_deps = ":" if d.getVar('BB_CURRENTTASK') == "devshell_nodeps" else f"mk-build-deps -i \
>          --host-arch {pkg_arch} --build-arch {build_arch}  \
> @@ -310,15 +315,12 @@ python do_devshell() {
>  
>      termcmd = "schroot -d / -c {0} -u root -- sh -c ' \
>          cd {1}; \
> -        echo {2} > /etc/apt/sources.list.d/isar_apt.list; \
> -        echo \"Package: *\nPin: release n={3}\nPin-Priority: 1000\" > /etc/apt/preferences.d/isar-apt; \
> -        echo \"APT::Get::allow-downgrades 1;\" > /etc/apt/apt.conf.d/50isar-apt; \
>          apt-get -y -q update; \
> -        {4}; \
> +        {2}; \
>          export PATH=$PATH_PREPEND:$PATH; \
>          $SHELL -i \
>      '"
> -    oe_terminal(termcmd.format(schroot, pp_pps, isar_apt, debdistroname, install_deps), "Isar devshell", d)
> +    oe_terminal(termcmd.format(schroot, pp_pps, install_deps), "Isar devshell", d)
>  
>      bb.build.exec_func('schroot_delete_configs', d)
>  }
> diff --git a/meta/classes/dpkg.bbclass b/meta/classes/dpkg.bbclass
> index 1d684e98..0cdb5792 100644
> --- a/meta/classes/dpkg.bbclass
> +++ b/meta/classes/dpkg.bbclass
> @@ -110,16 +110,17 @@ dpkg_runbuild() {
>      DEB_SOURCE_NAME=$(dpkg-parsechangelog --show-field Source --file ${WORKDIR}/${PPS}/debian/changelog)
>      DSC_FILE=$(find ${WORKDIR} -name "${DEB_SOURCE_NAME}*.dsc" -maxdepth 1 -print)
>  
> -    sbuild -A -n -c ${SBUILD_CHROOT} --extra-repository="${ISAR_APT_REPO}" \
> +    sbuild -A -n -c ${SBUILD_CHROOT} \
>          --host=${PACKAGE_ARCH} --build=${BUILD_ARCH} ${profiles} \
>          --no-run-lintian --no-run-piuparts --no-run-autopkgtest --resolve-alternatives \
>          --bd-uninstallable-explainer=apt \
> -        --no-apt-update \
> +        --no-apt-update --apt-distupgrade \
>          --chroot-setup-commands="echo \"Package: *\nPin: release n=${DEBDISTRONAME}\nPin-Priority: 1000\" > /etc/apt/preferences.d/isar-apt" \
>          --chroot-setup-commands="echo \"APT::Get::allow-downgrades 1;\" > /etc/apt/apt.conf.d/50isar-apt" \
>          --chroot-setup-commands="rm -f /var/log/dpkg.log" \
>          --chroot-setup-commands="mkdir -p ${deb_dir}" \
>          --chroot-setup-commands="ln -sf ${ext_deb_dir}/*.deb -t ${deb_dir}/" \
> +        --chroot-setup-commands="apt-get update -o Dir::Etc::SourceList=\"sources.list.d/isar-apt.list\" -o Dir::Etc::SourceParts=\"-\" -o APT::Get::List-Cleanup=\"0\"" \
>          --finished-build-commands="rm -f ${deb_dir}/sbuild-build-depends-main-dummy_*.deb" \
>          --finished-build-commands="[ -z "$(find ${deb_dir} -maxdepth 1 -name '*.deb' -print -quit)" ] || cp ${CP_FLAGS} ${deb_dir}/*.deb -t ${ext_deb_dir}/" \
>          --finished-build-commands="cp /var/log/dpkg.log ${ext_root}/dpkg_partial.log" \
> diff --git a/meta/recipes-devtools/sbuild-chroot/sbuild-chroot.inc b/meta/recipes-devtools/sbuild-chroot/sbuild-chroot.inc
> index 39ced80b..2f07de82 100644
> --- a/meta/recipes-devtools/sbuild-chroot/sbuild-chroot.inc
> +++ b/meta/recipes-devtools/sbuild-chroot/sbuild-chroot.inc
> @@ -56,8 +56,6 @@ SBUILD_CHROOT_DIR = "${WORKDIR}/rootfs"
>  ROOTFSDIR = "${SBUILD_CHROOT_DIR}"
>  ROOTFS_PACKAGES = "${SBUILD_CHROOT_PREINSTALL}"
>  
> -# We don't need /etc/apt/sources.list.d/isar-apt.list' while it's handled by sbuild
> -ROOTFS_CONFIGURE_COMMAND:remove = "rootfs_configure_isar_apt"
>  ROOTFS_POSTPROCESS_COMMAND:remove = "rootfs_cleanup_isar_apt"
>  
>  # Do not cleanup base-apt

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