[PATCH 1/1] Feature: Allow customization inside the schroot-run

[Ulrich Teichert]

Allow customization inside the schroot-run of image-tools-extension
by introducing the variables IMAGER_SCHROOT_CMD (useful to inject
a local apt-repository into the schroot), IMAGER_SCHROOT_UPDATE_OPTS
(to add the sources list) and IMAGER_SCHROOT_INSTALL_OPTS (to inject
options during install).

Signed-off-by: Ulrich Teichert <ulrich....@ebs-group.io>
---
meta/classes-recipe/image-tools-extension.bbclass | 3 +++
1 file changed, 3 insertions(+)

diff --git a/meta/classes-recipe/image-tools-extension.bbclass b/meta/classes-recipe/image-tools-extension.bbclass
index ab616b7e..5e8a8719 100644
--- a/meta/classes-recipe/image-tools-extension.bbclass
+++ b/meta/classes-recipe/image-tools-extension.bbclass
@@ -49,14 +49,17 @@ imager_run() {

E="${@ isar_export_proxies(d)}"
deb_dl_dir_import ${schroot_dir} ${distro}
+ if [ ! -z "${IMAGER_SCHROOT_CMD}" ]; then ${IMAGER_SCHROOT_CMD}; fi
${SCRIPTSDIR}/lockrun.py -r -f "${REPO_ISAR_DIR}/isar.lock" -s <<EOAPT
schroot -r -c ${session_id} -d / -u root -- sh -c " \
apt-get update \
-o Dir::Etc::SourceList='sources.list.d/isar-apt.list' \
+ ${IMAGER_SCHROOT_UPDATE_OPTS} \
-o Dir::Etc::SourceParts='-' \
-o APT::Get::List-Cleanup='0'
apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends -y \
--allow-unauthenticated --allow-downgrades --download-only install \
+ ${IMAGER_SCHROOT_INSTALL_OPTS} \
${local_install}"
EOAPT

--
2.47.3

Mit
besten Grüßen / Best regards 

Dipl.-Inform.
Ulrich
Teichert
Senior
Software Engineer

T
→ +49 431 375938-0

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[MOESSBAUER, Felix]

On Wed, 2026-07-15 at 06:54 +0000, 'Ulrich Teichert' via isar-users
wrote:

> Allow customization inside the schroot-run of image-tools-extension
> by introducing the variables IMAGER_SCHROOT_CMD (useful to inject
> a local apt-repository into the schroot), IMAGER_SCHROOT_UPDATE_OPTS
> (to add the sources list) and IMAGER_SCHROOT_INSTALL_OPTS (to inject
> options during install).

Hi,

I would like to postpone this patch until "add support to build isar
unprivileged" is merged, as this splits the imager_run path into
schroot and unshare.

Apart from that, I'm wondering if the change is really needed, as the
custom repo could also be injected into the whole build and by that
should also be accessible during imaging.

Felix

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[Ulrich Teichert]

Hi Felix,

>On Wed, 2026-07-15 at 06:54 +0000, 'Ulrich Teichert' via isar-users
>wrote:
>> Allow customization inside the schroot-run of image-tools-extension
>> by introducing the variables IMAGER_SCHROOT_CMD (useful to inject
>> a local apt-repository into the schroot), IMAGER_SCHROOT_UPDATE_OPTS
>> (to add the sources list) and IMAGER_SCHROOT_INSTALL_OPTS (to inject
>> options during install).

>Hi,
>
I> would like to postpone this patch until "add support to build isar
>unprivileged" is merged, as this splits the imager_run path into
>schroot and unshare.

That's fine with me.

>Apart from that, I'm wondering if the change is really needed, as the
>custom repo could also be injected into the whole build and by that
>should also be accessible during imaging.

Well, I am injecting the same repository with DISTRO_APT_SOURCES
but accessing it during the schroot-run failed, so I simply re-injecting it.
If the orginal setting could be preserved that would be nice, but I couldn't
get it to work,

CU,
Uli

[Jan Kiszka]

It's better to understand the root cause for the canonical approach
failing here.

Jan

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