Hi,

        When generating SBOM for foreign architectures (e.g., arm64), some 
Python packages fail to build. One such example is 
python3-cyclonedx-python-lib. During arm64 builds it throws the below error:

| The following packages have unmet dependencies:
|  sbuild-build-depends-main-dummy:arm64 : Depends: dh-python:arm64
|                                          Depends: python3-all:arm64 but 
it is not going to be installed
|                                          Depends: python3-setuptools:arm64
|                                          Depends: 
pybuild-plugin-pyproject:arm64
|                                          Depends: python3-hatchling:arm64 
but it is not installable


The fix is to add the :native suffix for Python build dependencies. For 
example:

DEBIAN_BUILD_DEPENDS = "debhelper (>= 11~), \
    dh-python, \
    python3-all:native, \
    python3-setuptools, \
    pybuild-plugin-pyproject, \
    python3-poetry:native, \
    python3-py-serializable:native, \
    python3-packageurl-python:native, \
    python3-sortedcontainers, \
    python3-ddt:native, \
    python3-defusedxml:native, \
    python3-license-expression:native, \
    python3-jsonschema:native, \
    python3-lxml:native, \
"

In short, Python recipes required for the build must explicitly use the 
:native suffix to avoid cross-architecture dependency resolution issues.

Similar fixes are needed for all the python recipes in this patch.

Many thanks,
Srinu

On Friday, September 12, 2025 at 1:47:13 PM UTC+5:30 Srinuvasan Arjunan 
wrote:

Hi Steiger,

In this patch series, the first patch (*meta: package Python dependencies 
for SBOM generation*) does not work on foreign architectures. I have fixed 
those cross-build issues — shall I send a v2 of this patch in the series?  

Many thanks,
Srinu


On Thursday, September 11, 2025 at 6:31:54 PM UTC+5:30 srinuv...@siemens.com 
wrote:

From: srinuvasan <srinuv...@siemens.com> 

Includes additional fixes alongside the following patch series 
https://groups.google.com/g/isar-users/c/4JntAI3gL1s 

srinuvasan (1): 
meta: derive ROOTFS_DISTRO correctly in sbom-chroot's 
do_prepare_rootfs 

meta/recipes-devtools/sbom-chroot/sbom-chroot.bb | 5 ----- 
1 file changed, 5 deletions(-) 

-- 
2.39.5 

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