[PATCH] meta: Generate WSL image for Windows Subsystem for Linux

[Clara Kowalsky]

This allows to generate a wsl file for Windows Subsystem for Linux.
The wsl image class adapts the rootfs for WSL: It creates /dev/pts/ptmx
because WSL needs that node before devpts is mounted. Without it, early
boot fails with forkpty errors. The class also removes /etc/resolv.conf,
as WSL manages it itself.
See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#configuration-file-recommendations

The wsl-config recipe ships the configuration files /etc/wsl.conf and
/etc/wsl-distribution.conf as templates.
See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#create-wsl-configuration-files

The variables in the configuration files can be overwritten in
downstream layers:
- WSL_DEFAULT_USER specifies which user runs when the WSL distro is
launched. Default: "root"
- WSL_DEFAULT_UID specifies the default UID used during first-run/OOBE
installation. Default: "0"
- WSL_DEFAULT_NAME specifies the name that the distro is registered
under. Default: "${DISTRO}-${MACHINE}"
Whole configuration files can be replaced or added by bbappending the
wsl-config recipe.

This was tested with WSL2, in plain Isar and in downstream layer.

Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
---
doc/user_manual.md | 1 +
kas/machine/Kconfig | 8 ++++
kas/machine/wsl.yaml | 7 +++
meta-isar/conf/machine/wsl.conf | 16 +++++++
meta-isar/conf/mc.conf | 2 +
meta-isar/conf/multiconfig/wsl-bookworm.conf | 7 +++
meta-isar/conf/multiconfig/wsl-trixie.conf | 7 +++
meta/classes-recipe/image.bbclass | 2 +-
meta/classes-recipe/imagetypes_wsl.bbclass | 48 +++++++++++++++++++
.../wsl-config/files/etc/oobe.sh | 4 ++
.../files/etc/wsl-distribution.conf.tmpl | 6 +++
.../wsl-config/files/etc/wsl.conf.tmpl | 5 ++
.../wsl-config/wsl-config_0.1.bb | 37 ++++++++++++++
testsuite/citest.py | 2 +
14 files changed, 151 insertions(+), 1 deletion(-)
create mode 100644 kas/machine/wsl.yaml
create mode 100644 meta-isar/conf/machine/wsl.conf
create mode 100644 meta-isar/conf/multiconfig/wsl-bookworm.conf
create mode 100644 meta-isar/conf/multiconfig/wsl-trixie.conf
create mode 100644 meta/classes-recipe/imagetypes_wsl.bbclass
create mode 100644 meta/recipes-support/wsl-config/files/etc/oobe.sh
create mode 100644 meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
create mode 100644 meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl
create mode 100644 meta/recipes-support/wsl-config/wsl-config_0.1.bb

diff --git a/doc/user_manual.md b/doc/user_manual.md
index dcc3f560..f3b1acb9 100644
--- a/doc/user_manual.md
+++ b/doc/user_manual.md
@@ -514,6 +514,7 @@ Currently, the following image types are provided:
- `ubi` - image for use on mtd nand partitions employing UBI
- `ubifs` - raw UBI filesystem image, normally used together with UBI partitions
- `ova` - Open Virtual Appliance: image for use on VirtualBox or VMware
+ - `wsl` - tar file for Windows Subsystem for Linux
- `squashfs` - raw squashfs filesystem image
- `fit` - FIT image as used by U-Boot
- `oci-archive`, `docker-archive`, `docker-daemon`, `containers-storage` - see [generating container images](#generate-container-image-with-root-filesystem)
diff --git a/kas/machine/Kconfig b/kas/machine/Kconfig
index 1e360be6..2895368c 100644
--- a/kas/machine/Kconfig
+++ b/kas/machine/Kconfig
@@ -253,6 +253,13 @@ config MACHINE_HYPER_V
select CODENAME_TRIXIE
select ARCH_AMD64

+config MACHINE_WSL
+ bool "wsl"
+ select DISTRO_DEBIAN
+ select CODENAME_BOOKWORM
+ select CODENAME_TRIXIE
+ select ARCH_AMD64
+
config MACHINE_X86_PC
bool "x86 PC"
select DISTRO_DEBIAN
@@ -297,6 +304,7 @@ config KAS_INCLUDE_MACHINE
default "kas/machine/virtualbox.yaml" if MACHINE_VIRTUALBOX
default "kas/machine/vmware.yaml" if MACHINE_VMWARE
default "kas/machine/hyper-v-amd64.yaml" if MACHINE_HYPER_V
+ default "kas/machine/wsl.yaml" if MACHINE_WSL
default "kas/machine/x86-pc.yaml" if MACHINE_X86_PC

endmenu
diff --git a/kas/machine/wsl.yaml b/kas/machine/wsl.yaml
new file mode 100644
index 00000000..f043b02a
--- /dev/null
+++ b/kas/machine/wsl.yaml
@@ -0,0 +1,7 @@
+# This software is a part of Isar.
+# Copyright (c) Siemens AG, 2026
+
+header:
+ version: 14
+
+machine: wsl
diff --git a/meta-isar/conf/machine/wsl.conf b/meta-isar/conf/machine/wsl.conf
new file mode 100644
index 00000000..086b0fe1
--- /dev/null
+++ b/meta-isar/conf/machine/wsl.conf
@@ -0,0 +1,16 @@
+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+DISTRO_ARCH ?= "amd64"
+
+# WSL uses the Windows-provided kernel
+KERNEL_NAME = ""
+
+IMAGE_FSTYPES ?= "wsl"
+
+# Configure rootfs for WSL boot
+IMAGE_INSTALL:append = " wsl-config"
+# Enable systemd-user session model
+IMAGE_PREINSTALL:append = " dbus dbus-user-session"
diff --git a/meta-isar/conf/mc.conf b/meta-isar/conf/mc.conf
index 649430a2..df3a38b0 100644
--- a/meta-isar/conf/mc.conf
+++ b/meta-isar/conf/mc.conf
@@ -89,4 +89,6 @@ BBMULTICONFIG = " \
qemuamd64-sid \
qemuarm64-sid \
qemuriscv64-resolute \
+ wsl-bookworm \
+ wsl-trixie \
"
diff --git a/meta-isar/conf/multiconfig/wsl-bookworm.conf b/meta-isar/conf/multiconfig/wsl-bookworm.conf
new file mode 100644
index 00000000..5e9f3697
--- /dev/null
+++ b/meta-isar/conf/multiconfig/wsl-bookworm.conf
@@ -0,0 +1,7 @@
+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+MACHINE ?= "wsl"
+DISTRO ?= "debian-bookworm"
diff --git a/meta-isar/conf/multiconfig/wsl-trixie.conf b/meta-isar/conf/multiconfig/wsl-trixie.conf
new file mode 100644
index 00000000..8ef796e4
--- /dev/null
+++ b/meta-isar/conf/multiconfig/wsl-trixie.conf
@@ -0,0 +1,7 @@
+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+MACHINE ?= "wsl"
+DISTRO ?= "debian-trixie"
diff --git a/meta/classes-recipe/image.bbclass b/meta/classes-recipe/image.bbclass
index d02f99da..0329c3f8 100644
--- a/meta/classes-recipe/image.bbclass
+++ b/meta/classes-recipe/image.bbclass
@@ -174,7 +174,7 @@ IMAGE_BASETYPES = "${@get_image_basetypes(d)}"

# image types
IMAGE_CLASSES ??= ""
-IMGCLASSES = "imagetypes imagetypes_wic imagetypes_vm imagetypes_container squashfs \
+IMGCLASSES = "imagetypes imagetypes_wic imagetypes_vm imagetypes_wsl imagetypes_container squashfs \
imagetypes_ddi"
IMGCLASSES += "${IMAGE_CLASSES}"
inherit ${IMGCLASSES}
diff --git a/meta/classes-recipe/imagetypes_wsl.bbclass b/meta/classes-recipe/imagetypes_wsl.bbclass
new file mode 100644
index 00000000..413c6a2d
--- /dev/null
+++ b/meta/classes-recipe/imagetypes_wsl.bbclass
@@ -0,0 +1,48 @@
+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+# This class allows to generate WSL import artifacts.
+#
+
+USING_WSL = "${@bb.utils.contains('IMAGE_BASETYPES', 'wsl', '1', '0', d)}"
+
+# WSL requires a static /dev/pts/ptmx during early boot
+ROOTFS_CONFIGURE_COMMAND += "${@bb.utils.contains('USING_WSL', '1', 'image_configure_wsl_ptmx', '', d)}"
+
+# The rootfs should not contain a /etc/resolv.conf
+# See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#configuration-file-recommendations
+ROOTFS_POSTPROCESS_COMMAND += "${@bb.utils.contains('USING_WSL', '1', 'image_postprocess_wsl_cleanup', '', d)}"
+image_postprocess_wsl_cleanup[vardeps] += "WSL_CLEANUP_FILES"
+
+WSL_CLEANUP_FILES ?= " \
+ /etc/resolv.conf \
+"
+
+IMAGE_TYPEDEP:wsl = "tar.gz"
+
+IMAGE_CMD:wsl() {
+ cp -f "${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.tar.gz" "${IMAGE_FILE_HOST}"
+}
+
+image_configure_wsl_ptmx() {
+ run_privileged_heredoc <<'EOSUDO'
+ set -e
+
+ mkdir -p "${ROOTFSDIR}/dev/pts"
+ if [ ! -e "${ROOTFSDIR}/dev/pts/ptmx" ]; then
+ mknod -m 000 "${ROOTFSDIR}/dev/pts/ptmx" c 5 2
+ fi
+EOSUDO
+}
+
+image_postprocess_wsl_cleanup() {
+ run_privileged_heredoc <<'EOSUDO'
+ set -e
+
+ for path in ${WSL_CLEANUP_FILES}; do
+ rm -f "${ROOTFSDIR}${path}"
+ done
+EOSUDO
+}
diff --git a/meta/recipes-support/wsl-config/files/etc/oobe.sh b/meta/recipes-support/wsl-config/files/etc/oobe.sh
new file mode 100644
index 00000000..e9ddfd16
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/oobe.sh
@@ -0,0 +1,4 @@
+#! /usr/bin/bash
+
+# Generic OOBE hook for Isar-generated WSL images
+exit 0
diff --git a/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
new file mode 100644
index 00000000..4f83314b
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
@@ -0,0 +1,6 @@
+# See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#add-the-wsl-distribution-configuration-file
+
+[oobe]
+command = /etc/oobe.sh
+defaultUid = ${WSL_DEFAULT_UID}
+defaultName = ${WSL_DEFAULT_NAME}
diff --git a/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl b/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl
new file mode 100644
index 00000000..862ca252
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl
@@ -0,0 +1,5 @@
+[boot]
+systemd=true
+
+[user]
+default=${WSL_DEFAULT_USER}
diff --git a/meta/recipes-support/wsl-config/wsl-config_0.1.bb b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
new file mode 100644
index 00000000..2144c01b
--- /dev/null
+++ b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
@@ -0,0 +1,37 @@
+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+inherit dpkg-raw
+
+DESCRIPTION = "WSL configuration files"
+MAINTAINER = "Clara Kowalsky <clara.k...@siemens.com>"
+
+WSL_DEFAULT_USER ?= "root"
+WSL_DEFAULT_UID ?= "0"
+WSL_DEFAULT_NAME ?= "${DISTRO}-${MACHINE}"
+
+SRC_URI = " \
+ file://etc/oobe.sh \
+ file://etc/wsl.conf.tmpl \
+ file://etc/wsl-distribution.conf.tmpl \
+"
+
+TEMPLATE_FILES = " \
+ etc/wsl.conf.tmpl \
+ etc/wsl-distribution.conf.tmpl \
+"
+TEMPLATE_VARS += " \
+ WSL_DEFAULT_USER \
+ WSL_DEFAULT_UID \
+ WSL_DEFAULT_NAME \
+"
+
+do_install[cleandirs] += "${D}/etc"
+
+do_install() {
+ install -m 0644 "${WORKDIR}/etc/wsl.conf" "${D}/etc"
+ install -m 0644 "${WORKDIR}/etc/wsl-distribution.conf" "${D}/etc"
+ install -m 0755 "${WORKDIR}/etc/oobe.sh" "${D}/etc"
+}
diff --git a/testsuite/citest.py b/testsuite/citest.py
index a4f15d04..b13e27ed 100644
--- a/testsuite/citest.py
+++ b/testsuite/citest.py
@@ -904,6 +904,8 @@ class NoCrossTest(CIBaseTest):
'mc:qemuamd64-jammy:isar-image-base',
'mc:qemuarm64-jammy:isar-image-base',
'mc:x86-pc-bookworm:isar-image-base',
+ 'mc:wsl-bookworm:isar-image-base',
+ 'mc:wsl-trixie:isar-image-base',
]

self.init()
--
2.54.0

[MOESSBAUER, Felix]

On Thu, 2026-08-06 at 09:07 +0200, 'Clara Kowalsky' via isar-users
wrote:

Hi,

this file is already in ROOTFS_CLEAN_FILES. By that, it should be
cleaned (but I'm wondering if rootfs_install_clean_files is running too
early). Please fix the existing logic (if needed) instead of
introducing a new one.

Apart from that, the image type must not alter the rootfs itself, but
instead create a new (modified) copy.

> +
> +IMAGE_TYPEDEP:wsl = "tar.gz"

Depend on the tar instead of tar.gz, then you can easily apply the
modifications while repacking

> +
> +IMAGE_CMD:wsl() {
> + cp -f "${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.tar.gz" "${IMAGE_FILE_HOST}"

Here you could apply the filter by doing something like (untested)

cat ${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.tar.gz | tar --delete
/etc/resolv.conf | gz > ${IMAGE_FILE_HOST}

> +}
> +
> +image_configure_wsl_ptmx() {
> + run_privileged_heredoc <<'EOSUDO'
> + set -e
> +
> + mkdir -p "${ROOTFSDIR}/dev/pts"
> + if [ ! -e "${ROOTFSDIR}/dev/pts/ptmx" ]; then
> + mknod -m 000 "${ROOTFSDIR}/dev/pts/ptmx" c 5 2
> + fi
> +EOSUDO
> +}
> +
> +image_postprocess_wsl_cleanup() {
> + run_privileged_heredoc <<'EOSUDO'
> + set -e
> +
> + for path in ${WSL_CLEANUP_FILES}; do
> + rm -f "${ROOTFSDIR}${path}"
> + done
> +EOSUDO
>
>
> +}

This does not work, as the final image is deployed with an empty /dev
(since "image: delete entries below /dev"). But it also should not be
needed, as systemd mounts a devpts on /dev/pts and sets up the
symlinks.

Felix

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[Anton Mikanovich]

We should probably don't set KERNEL_NAME at all, just like container
machine does.
And this also requires adding some hacks in
meta-isar/conf/local.conf.sample

> +
> +IMAGE_FSTYPES ?= "wsl"
> +
> +# Configure rootfs for WSL boot
> +IMAGE_INSTALL:append = " wsl-config"
> +# Enable systemd-user session model
> +IMAGE_PREINSTALL:append = " dbus dbus-user-session"
> diff --git a/meta-isar/conf/mc.conf b/meta-isar/conf/mc.conf
> index 649430a2..df3a38b0 100644
> --- a/meta-isar/conf/mc.conf
> +++ b/meta-isar/conf/mc.conf
> @@ -89,4 +89,6 @@ BBMULTICONFIG = " \
> qemuamd64-sid \
> qemuarm64-sid \
> qemuriscv64-resolute \
> + wsl-bookworm \
> + wsl-trixie \
> "

Can you also run testsuite/targets_gen.py to update
testsuite/data/targets.yml?

It's better to add a separate test case (just like for containers).
> ]
>
> self.init()

[Clara Kowalsky]

Hi,

I checked this and the cleanup was a leftover from very initial wsl
testing in a layer that depended on isar-cip-core, causing
KERNEL_NAME="cip" to be set for the wsl build.
I removed that in a v2. rootfs_install_clean_files is running at the
right time in my 3 test scenarios, so no need to place it later.

Clara

[Clara Kowalsky]

On 8/10/26 12:37, Anton Mikanovich wrote:
> 06.08.2026 10:07, 'Clara Kowalsky' via isar-users wrote:
>> This allows to generate a wsl file for Windows Subsystem for Linux.
>> The wsl image class adapts the rootfs for WSL: It creates /dev/pts/ptmx
>> because WSL needs that node before devpts is mounted. Without it, early
>> boot fails with forkpty errors. The class also removes /etc/resolv.conf,
>> as WSL manages it itself.

>> See https://eur01.safelinks.protection.outlook.com/?
>> url=https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fwindows%2Fwsl%2Fbuild-
>> custom-distro%23configuration-file-
>> recommendations&data=05%7C02%7Cclara.kowalsky%40siemens.com%7Cee27eaa6dc0e4d5563a308def6cb681c%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C639219550679870389%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=5vhCDx7w5JEvg268M8TauaG%2FHWvD1p4QnkOOJZOtMvA%3D&reserved=0

>>
>> The wsl-config recipe ships the configuration files /etc/wsl.conf and
>> /etc/wsl-distribution.conf as templates.

>> See https://eur01.safelinks.protection.outlook.com/?
>> url=https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fwindows%2Fwsl%2Fbuild-
>> custom-distro%23create-wsl-configuration-
>> files&data=05%7C02%7Cclara.kowalsky%40siemens.com%7Cee27eaa6dc0e4d5563a308def6cb681c%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C639219550679887567%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ivPY0EFuef7WVQHUxvTPOCVRDmAiB7m3D3mT157OrhY%3D&reserved=0

I'll send a v2 with KERNEL_NAME removed and "hacks" in
local.conf.sample. I only set the KERNEL_NAME to empty in v1, as it gets
overridden by default when using isar-cip-core.

>> +
>> +IMAGE_FSTYPES ?= "wsl"
>> +
>> +# Configure rootfs for WSL boot
>> +IMAGE_INSTALL:append = " wsl-config"
>> +# Enable systemd-user session model
>> +IMAGE_PREINSTALL:append = " dbus dbus-user-session"
>> diff --git a/meta-isar/conf/mc.conf b/meta-isar/conf/mc.conf
>> index 649430a2..df3a38b0 100644
>> --- a/meta-isar/conf/mc.conf
>> +++ b/meta-isar/conf/mc.conf
>> @@ -89,4 +89,6 @@ BBMULTICONFIG = " \
>>       qemuamd64-sid \
>>       qemuarm64-sid \
>>       qemuriscv64-resolute \
>> +    wsl-bookworm \
>> +    wsl-trixie \
>>   "
> Can you also run testsuite/targets_gen.py to update testsuite/data/
> targets.yml?

Done in v2.
>> diff --git a/meta-isar/conf/multiconfig/wsl-bookworm.conf b/meta-isar/

>> +# See https://eur01.safelinks.protection.outlook.com/?
>> url=https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fwindows%2Fwsl%2Fbuild-
>> custom-distro%23configuration-file-
>> recommendations&data=05%7C02%7Cclara.kowalsky%40siemens.com%7Cee27eaa6dc0e4d5563a308def6cb681c%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C639219550679897282%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ODd2QDlUQV0xHGNOedKXG9NQsbDYpTAh8HUlkLkqyv8%3D&reserved=0

>> +# See https://eur01.safelinks.protection.outlook.com/?
>> url=https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fwindows%2Fwsl%2Fbuild-
>> custom-distro%23add-the-wsl-distribution-configuration-
>> file&data=05%7C02%7Cclara.kowalsky%40siemens.com%7Cee27eaa6dc0e4d5563a308def6cb681c%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C639219550679906625%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=5syCP2hLknjgdDijfCEBLcqZS3ZUpe7Pqk1qzFdOklA%3D&reserved=0

Done in v2.
>>           ]
>>           self.init()
>

[Clara Kowalsky]

This allows to generate a `.wsl` file for Windows Subsystem for Linux,
based on the tar image type. WSL uses the Windows-provided kernel, so
make sure that other layers like isar-cip-core do not set the
KERNEL_NAME for this machine.

The wsl-config recipe ships the configuration files /etc/wsl.conf and
/etc/wsl-distribution.conf as templates.

See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#create-wsl-configuration-files

The variables in the configuration files can be overwritten in
downstream layers:
- WSL_DEFAULT_USER specifies which user runs when the WSL distro is
launched. Default: "root"
- WSL_DEFAULT_UID specifies the default UID used during first-run/OOBE
installation. Default: "0"
- WSL_DEFAULT_NAME specifies the name that the distro is registered
under. Default: "${DISTRO}-${MACHINE}"
Whole configuration files can be replaced or added by bbappending the
wsl-config recipe.

This was tested with WSL2, in plain Isar and in downstream layer.

Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
---
doc/user_manual.md | 1 +
kas/machine/Kconfig | 8 ++++

kas/machine/wsl.yaml | 7 ++++
meta-isar/conf/local.conf.sample | 3 +-
meta-isar/conf/machine/wsl.conf | 13 +++++++
meta-isar/conf/mc.conf | 2 +
meta-isar/conf/multiconfig/wsl-bookworm.conf | 7 ++++
meta-isar/conf/multiconfig/wsl-trixie.conf | 7 ++++
meta/classes-recipe/image.bbclass | 2 +-
meta/classes-recipe/imagetypes_wsl.bbclass | 13 +++++++

.../wsl-config/files/etc/oobe.sh | 4 ++
.../files/etc/wsl-distribution.conf.tmpl | 6 +++

.../wsl-config/files/etc/wsl.conf.tmpl | 5 +++
.../wsl-config/wsl-config_0.1.bb | 37 +++++++++++++++++++
testsuite/citest.py | 18 +++++++++
testsuite/data/targets.yml | 4 ++
16 files changed, 135 insertions(+), 2 deletions(-)

create mode 100644 kas/machine/wsl.yaml
create mode 100644 meta-isar/conf/machine/wsl.conf
create mode 100644 meta-isar/conf/multiconfig/wsl-bookworm.conf
create mode 100644 meta-isar/conf/multiconfig/wsl-trixie.conf
create mode 100644 meta/classes-recipe/imagetypes_wsl.bbclass
create mode 100644 meta/recipes-support/wsl-config/files/etc/oobe.sh

create mode 100644 meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
create mode 100644 meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl

create mode 100644 meta/recipes-support/wsl-config/wsl-config_0.1.bb

diff --git a/doc/user_manual.md b/doc/user_manual.md
index dcc3f560..f3b1acb9 100644
--- a/doc/user_manual.md
+++ b/doc/user_manual.md
@@ -514,6 +514,7 @@ Currently, the following image types are provided:
- `ubi` - image for use on mtd nand partitions employing UBI
- `ubifs` - raw UBI filesystem image, normally used together with UBI partitions
- `ova` - Open Virtual Appliance: image for use on VirtualBox or VMware
+ - `wsl` - tar file for Windows Subsystem for Linux
- `squashfs` - raw squashfs filesystem image
- `fit` - FIT image as used by U-Boot

- `oci-archive`, `docker-archive`, `docker-daemon`, `containers-storage` - see [generating container images](#generate-container-image-with-root-filesystem)

diff --git a/meta-isar/conf/local.conf.sample b/meta-isar/conf/local.conf.sample
index 9b0b3746..6e1e1546 100644
--- a/meta-isar/conf/local.conf.sample
+++ b/meta-isar/conf/local.conf.sample
@@ -155,8 +155,9 @@ CONF_VERSION = "1"
IMAGE_INSTALL = "hello-isar example-raw example-module-${KERNEL_NAME} enable-fsck isar-exclude-docs samefile hello isar-disable-apt-cache cowsay example-prebuilt"

#
-# Container machines don't need example module and enable-fsck.
+# Container and WSL machines don't need example module and enable-fsck.
IMAGE_INSTALL:remove:container-amd64 = "example-module-${KERNEL_NAME} enable-fsck"
+IMAGE_INSTALL:remove:wsl = "example-module-${KERNEL_NAME} enable-fsck"

#
# Machines with secure boot should use signed modules.
diff --git a/meta-isar/conf/machine/wsl.conf b/meta-isar/conf/machine/wsl.conf
new file mode 100644
index 00000000..b1a3b89b
--- /dev/null
+++ b/meta-isar/conf/machine/wsl.conf
@@ -0,0 +1,13 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+DISTRO_ARCH ?= "amd64"
+

+IMAGE_FSTYPES ?= "wsl"
+
+# Configure rootfs for WSL boot
+IMAGE_INSTALL:append = " wsl-config"
+# Enable systemd-user session model
+IMAGE_PREINSTALL:append = " dbus dbus-user-session"
diff --git a/meta-isar/conf/mc.conf b/meta-isar/conf/mc.conf
index 649430a2..df3a38b0 100644
--- a/meta-isar/conf/mc.conf
+++ b/meta-isar/conf/mc.conf
@@ -89,4 +89,6 @@ BBMULTICONFIG = " \
qemuamd64-sid \
qemuarm64-sid \
qemuriscv64-resolute \
+ wsl-bookworm \
+ wsl-trixie \
"

diff --git a/meta-isar/conf/multiconfig/wsl-bookworm.conf b/meta-isar/conf/multiconfig/wsl-bookworm.conf

new file mode 100644
index 00000000..e216ef5d
--- /dev/null
+++ b/meta/classes-recipe/imagetypes_wsl.bbclass
@@ -0,0 +1,13 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+# This class allows to generate WSL import artifacts.
+#
+

+IMAGE_TYPEDEP:wsl = "tar"
+
+IMAGE_CMD:wsl() {
+ gzip -f -9 -n -c "${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.tar" > "${IMAGE_FILE_HOST}"

+}
diff --git a/meta/recipes-support/wsl-config/files/etc/oobe.sh b/meta/recipes-support/wsl-config/files/etc/oobe.sh

new file mode 100644
index 00000000..e9ddfd16
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/oobe.sh
@@ -0,0 +1,4 @@
+#! /usr/bin/bash
+
+# Generic OOBE hook for Isar-generated WSL images
+exit 0
diff --git a/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
new file mode 100644
index 00000000..4f83314b
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
@@ -0,0 +1,6 @@

+# See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#add-the-wsl-distribution-configuration-file

index 3ab8b557..869560c1 100644
--- a/testsuite/citest.py
+++ b/testsuite/citest.py
@@ -1326,6 +1326,24 @@ class ContainerImageTest(CIBaseTest):
self.perform_build_test(targets, container=True)


+class WSLImageTest(CIBaseTest):
+
+ """
+ Test WSL images creation
+
+ :avocado: tags=wslbuild,full,wsl
+ """
+
+ def test_wsl_image(self):
+ targets = [

+ 'mc:wsl-bookworm:isar-image-base',
+ 'mc:wsl-trixie:isar-image-base',

+ ]
+
+ self.init()
+ self.perform_build_test(targets, cross=False)
+
+
class ContainerSdkTest(CIBaseTest):

"""
diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
index 2e5fa120..c7c4c32b 100644
--- a/testsuite/data/targets.yml
+++ b/testsuite/data/targets.yml
@@ -155,6 +155,10 @@ a: !mux
name: qemuarm64-sid
qemuriscv64-resolute:
name: qemuriscv64-resolute
+ wsl-bookworm:
+ name: wsl-bookworm
+ wsl-trixie:
+ name: wsl-trixie
b: !mux
base:
image: isar-image-base
--
2.54.0

[Clara Kowalsky]

Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
---

testsuite/data/targets.yml | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
index c7c4c32b..a4474829 100644
--- a/testsuite/data/targets.yml
+++ b/testsuite/data/targets.yml
@@ -77,6 +77,12 @@ a: !mux
name: hikey-bookworm
hikey-trixie:
name: hikey-trixie
+ hyper-v-amd64-bullseye:
+ name: hyper-v-amd64-bullseye
+ hyper-v-amd64-bookworm:
+ name: hyper-v-amd64-bookworm
+ hyper-v-amd64-trixie:
+ name: hyper-v-amd64-trixie
phyboard-mira-bullseye:
name: phyboard-mira-bullseye
phyboard-mira-bookworm:
--
2.54.0

[MOESSBAUER, Felix]

On Wed, 2026-08-12 at 12:00 +0200, 'Clara Kowalsky' via isar-users
wrote:

If the content is machine specific, we also need to have the ${MACHINE}
in the package name.

I recommend something like this:

PROVIDES := "${BPN}"
DEBIAN_PROVIDES := "${BPN}"
PN .= "-${DISTRO_ARCH}"

Why no cross? Just drop that parameter please.

Felix

> +
> +
> class ContainerSdkTest(CIBaseTest):
>
> """
> diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
> index 2e5fa120..c7c4c32b 100644
> --- a/testsuite/data/targets.yml
> +++ b/testsuite/data/targets.yml
> @@ -155,6 +155,10 @@ a: !mux
> name: qemuarm64-sid
> qemuriscv64-resolute:
> name: qemuriscv64-resolute
> + wsl-bookworm:
> + name: wsl-bookworm
> + wsl-trixie:
> + name: wsl-trixie
> b: !mux
> base:
> image: isar-image-base
> --
> 2.54.0
>

> --
> You received this message because you are subscribed to the Google Groups "isar-users" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to isar-users+...@googlegroups.com.

> To view this discussion visit https://groups.google.com/d/msgid/isar-users/20260812100003.1669757-1-clara.kowalsky%40siemens.com.

[MOESSBAUER, Felix]

On Wed, 2026-08-12 at 12:00 +0200, 'Clara Kowalsky' via isar-users
wrote:

> Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
> ---
> testsuite/data/targets.yml | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
> index c7c4c32b..a4474829 100644
> --- a/testsuite/data/targets.yml
> +++ b/testsuite/data/targets.yml
> @@ -77,6 +77,12 @@ a: !mux
> name: hikey-bookworm
> hikey-trixie:
> name: hikey-trixie
> + hyper-v-amd64-bullseye:
> + name: hyper-v-amd64-bullseye
> + hyper-v-amd64-bookworm:
> + name: hyper-v-amd64-bookworm
> + hyper-v-amd64-trixie:
> + name: hyper-v-amd64-trixie

Why are parts of the targets update in p1 and parts are here?

Felix

> phyboard-mira-bullseye:
> name: phyboard-mira-bullseye
> phyboard-mira-bookworm:
> --
> 2.54.0
>

> --
> You received this message because you are subscribed to the Google Groups "isar-users" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to isar-users+...@googlegroups.com.

> To view this discussion visit https://groups.google.com/d/msgid/isar-users/20260812100003.1669757-2-clara.kowalsky%40siemens.com.

[Florian Bezdeka]

On Wed, 2026-08-12 at 12:00 +0200, 'Clara Kowalsky' via isar-users
wrote:

> diff --git a/meta/recipes-support/wsl-config/wsl-config_0.1.bb b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
> new file mode 100644
> index 00000000..2144c01b
> --- /dev/null
> +++ b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
> @@ -0,0 +1,37 @@
> +# This software is a part of Isar.
> +# Copyright (C) Siemens AG, 2026
> +#
> +# SPDX-License-Identifier: MIT
> +
> +inherit dpkg-raw
> +
> +DESCRIPTION = "WSL configuration files"
> +MAINTAINER = "Clara Kowalsky <clara.k...@siemens.com>"

We normally use the isar mailing list as maintainer. I'm quite sure you
won't handle that in you "private" mail box ;-)

Florian

[Clara Kowalsky]

On 8/12/26 14:30, Moessbauer, Felix (FT RPD CED OES-DE) wrote:
> On Wed, 2026-08-12 at 12:00 +0200, 'Clara Kowalsky' via isar-users
> wrote:
>> Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
>> ---
>> testsuite/data/targets.yml | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
>> index c7c4c32b..a4474829 100644
>> --- a/testsuite/data/targets.yml
>> +++ b/testsuite/data/targets.yml
>> @@ -77,6 +77,12 @@ a: !mux
>> name: hikey-bookworm
>> hikey-trixie:
>> name: hikey-trixie
>> + hyper-v-amd64-bullseye:
>> + name: hyper-v-amd64-bullseye
>> + hyper-v-amd64-bookworm:
>> + name: hyper-v-amd64-bookworm
>> + hyper-v-amd64-trixie:
>> + name: hyper-v-amd64-trixie
>
> Why are parts of the targets update in p1 and parts are here?
>
> Felix

The hyper-v part was missing in commit 512ba3b4 ("feat: add support for
hyper-v virtual machine"). It does not belong to WSL. I'll change the
patch order in v3.

Clara

[Clara Kowalsky]

This adds the Hyper-V machine to targets.yml, as this was missing in

commit 512ba3b4 ("feat: add support for hyper-v virtual machine").

Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
---
testsuite/data/targets.yml | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml

index 2e5fa120..f27ae2d7 100644

--- a/testsuite/data/targets.yml
+++ b/testsuite/data/targets.yml
@@ -77,6 +77,12 @@ a: !mux
name: hikey-bookworm
hikey-trixie:
name: hikey-trixie
+ hyper-v-amd64-bullseye:
+ name: hyper-v-amd64-bullseye
+ hyper-v-amd64-bookworm:
+ name: hyper-v-amd64-bookworm
+ hyper-v-amd64-trixie:
+ name: hyper-v-amd64-trixie

[Clara Kowalsky]

This allows to generate a `.wsl` file for Windows Subsystem for Linux,
based on the tar image type. WSL uses the Windows-provided kernel, so
make sure that other layers like isar-cip-core do not set the
KERNEL_NAME for this machine.

The wsl-config recipe ships the configuration files /etc/wsl.conf and
/etc/wsl-distribution.conf as templates.
See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#create-wsl-configuration-files

The variables in the configuration files can be overwritten in
downstream layers:
- WSL_DEFAULT_USER specifies which user runs when the WSL distro is
launched. Default: "root"
- WSL_DEFAULT_UID specifies the default UID used during first-run/OOBE
installation. Default: "0"
- WSL_DEFAULT_NAME specifies the name that the distro is registered
under. Default: "${DISTRO}-${MACHINE}"
Whole configuration files can be replaced or added by bbappending the
wsl-config recipe.

This was tested with WSL2, in plain Isar and in downstream layer.

Signed-off-by: Clara Kowalsky <clara.k...@siemens.com>
---

doc/user_manual.md | 1 +
kas/machine/Kconfig | 8 ++++
kas/machine/wsl.yaml | 7 ++++
meta-isar/conf/local.conf.sample | 3 +-
meta-isar/conf/machine/wsl.conf | 13 ++++++

meta-isar/conf/mc.conf | 2 +
meta-isar/conf/multiconfig/wsl-bookworm.conf | 7 ++++
meta-isar/conf/multiconfig/wsl-trixie.conf | 7 ++++
meta/classes-recipe/image.bbclass | 2 +-
meta/classes-recipe/imagetypes_wsl.bbclass | 13 ++++++

.../wsl-config/files/etc/oobe.sh | 4 ++
.../files/etc/wsl-distribution.conf.tmpl | 6 +++
.../wsl-config/files/etc/wsl.conf.tmpl | 5 +++

.../wsl-config/wsl-config_0.1.bb | 41 +++++++++++++++++++
testsuite/citest.py | 18 ++++++++
testsuite/data/targets.yml | 4 ++
16 files changed, 139 insertions(+), 2 deletions(-)

new file mode 100644

index 00000000..f043b02a
--- /dev/null
+++ b/kas/machine/wsl.yaml

@@ -0,0 +1,7 @@

+# This software is a part of Isar.

+# Copyright (c) Siemens AG, 2026
+
+header:
+ version: 14
+
+machine: wsl
diff --git a/meta-isar/conf/local.conf.sample b/meta-isar/conf/local.conf.sample
index 9b0b3746..6e1e1546 100644
--- a/meta-isar/conf/local.conf.sample
+++ b/meta-isar/conf/local.conf.sample
@@ -155,8 +155,9 @@ CONF_VERSION = "1"
IMAGE_INSTALL = "hello-isar example-raw example-module-${KERNEL_NAME} enable-fsck isar-exclude-docs samefile hello isar-disable-apt-cache cowsay example-prebuilt"

#
-# Container machines don't need example module and enable-fsck.
+# Container and WSL machines don't need example module and enable-fsck.
IMAGE_INSTALL:remove:container-amd64 = "example-module-${KERNEL_NAME} enable-fsck"
+IMAGE_INSTALL:remove:wsl = "example-module-${KERNEL_NAME} enable-fsck"

#
# Machines with secure boot should use signed modules.
diff --git a/meta-isar/conf/machine/wsl.conf b/meta-isar/conf/machine/wsl.conf

new file mode 100644

index 00000000..b1a3b89b
--- /dev/null
+++ b/meta-isar/conf/machine/wsl.conf

@@ -0,0 +1,13 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+

+DISTRO_ARCH ?= "amd64"
+
+IMAGE_FSTYPES ?= "wsl"
+
+# Configure rootfs for WSL boot
+IMAGE_INSTALL:append = " wsl-config"
+# Enable systemd-user session model
+IMAGE_PREINSTALL:append = " dbus dbus-user-session"
diff --git a/meta-isar/conf/mc.conf b/meta-isar/conf/mc.conf
index 649430a2..df3a38b0 100644
--- a/meta-isar/conf/mc.conf
+++ b/meta-isar/conf/mc.conf
@@ -89,4 +89,6 @@ BBMULTICONFIG = " \
qemuamd64-sid \
qemuarm64-sid \
qemuriscv64-resolute \
+ wsl-bookworm \
+ wsl-trixie \
"
diff --git a/meta-isar/conf/multiconfig/wsl-bookworm.conf b/meta-isar/conf/multiconfig/wsl-bookworm.conf

new file mode 100644

index 00000000..5e9f3697
--- /dev/null
+++ b/meta-isar/conf/multiconfig/wsl-bookworm.conf

@@ -0,0 +1,7 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+

+MACHINE ?= "wsl"
+DISTRO ?= "debian-bookworm"
diff --git a/meta-isar/conf/multiconfig/wsl-trixie.conf b/meta-isar/conf/multiconfig/wsl-trixie.conf

new file mode 100644

index 00000000..8ef796e4
--- /dev/null
+++ b/meta-isar/conf/multiconfig/wsl-trixie.conf

@@ -0,0 +1,7 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+

+MACHINE ?= "wsl"
+DISTRO ?= "debian-trixie"
diff --git a/meta/classes-recipe/image.bbclass b/meta/classes-recipe/image.bbclass
index d02f99da..0329c3f8 100644
--- a/meta/classes-recipe/image.bbclass
+++ b/meta/classes-recipe/image.bbclass
@@ -174,7 +174,7 @@ IMAGE_BASETYPES = "${@get_image_basetypes(d)}"

# image types
IMAGE_CLASSES ??= ""
-IMGCLASSES = "imagetypes imagetypes_wic imagetypes_vm imagetypes_container squashfs \
+IMGCLASSES = "imagetypes imagetypes_wic imagetypes_vm imagetypes_wsl imagetypes_container squashfs \
imagetypes_ddi"
IMGCLASSES += "${IMAGE_CLASSES}"
inherit ${IMGCLASSES}
diff --git a/meta/classes-recipe/imagetypes_wsl.bbclass b/meta/classes-recipe/imagetypes_wsl.bbclass

new file mode 100644

index 00000000..e216ef5d
--- /dev/null
+++ b/meta/classes-recipe/imagetypes_wsl.bbclass

@@ -0,0 +1,13 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+

+# This class allows to generate WSL import artifacts.
+#
+
+IMAGE_TYPEDEP:wsl = "tar"
+
+IMAGE_CMD:wsl() {
+ gzip -f -9 -n -c "${DEPLOY_DIR_IMAGE}/${IMAGE_FULLNAME}.tar" > "${IMAGE_FILE_HOST}"
+}
diff --git a/meta/recipes-support/wsl-config/files/etc/oobe.sh b/meta/recipes-support/wsl-config/files/etc/oobe.sh

new file mode 100644

index 00000000..e9ddfd16
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/oobe.sh
@@ -0,0 +1,4 @@
+#! /usr/bin/bash
+
+# Generic OOBE hook for Isar-generated WSL images
+exit 0
diff --git a/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl

new file mode 100644

index 00000000..4f83314b
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/wsl-distribution.conf.tmpl
@@ -0,0 +1,6 @@
+# See https://learn.microsoft.com/en-us/windows/wsl/build-custom-distro#add-the-wsl-distribution-configuration-file
+
+[oobe]
+command = /etc/oobe.sh
+defaultUid = ${WSL_DEFAULT_UID}
+defaultName = ${WSL_DEFAULT_NAME}
diff --git a/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl b/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl

new file mode 100644

index 00000000..862ca252
--- /dev/null
+++ b/meta/recipes-support/wsl-config/files/etc/wsl.conf.tmpl
@@ -0,0 +1,5 @@
+[boot]
+systemd=true
+
+[user]
+default=${WSL_DEFAULT_USER}

diff --git a/meta/recipes-support/wsl-config/wsl-config_0.1.bb b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
new file mode 100644

index 00000000..5e013013
--- /dev/null
+++ b/meta/recipes-support/wsl-config/wsl-config_0.1.bb
@@ -0,0 +1,41 @@

+# This software is a part of Isar.
+# Copyright (C) Siemens AG, 2026
+#
+# SPDX-License-Identifier: MIT
+
+inherit dpkg-raw
+
+DESCRIPTION = "WSL configuration files"

+MAINTAINER = "isar-users <isar-...@googlegroups.com>"
+
+PROVIDES := "${BPN}"
+DEBIAN_PROVIDES := "${BPN}"
+PN .= "-${DISTRO_ARCH}"

+
+WSL_DEFAULT_USER ?= "root"
+WSL_DEFAULT_UID ?= "0"
+WSL_DEFAULT_NAME ?= "${DISTRO}-${MACHINE}"

index fc0c7106..968f89c8 100644
--- a/testsuite/citest.py
+++ b/testsuite/citest.py
@@ -1333,6 +1333,24 @@ class ContainerImageTest(CIBaseTest):

self.perform_build_test(targets, container=True)


+class WSLImageTest(CIBaseTest):
+
+ """
+ Test WSL images creation
+
+ :avocado: tags=wslbuild,full,wsl
+ """
+
+ def test_wsl_image(self):
+ targets = [
+ 'mc:wsl-bookworm:isar-image-base',
+ 'mc:wsl-trixie:isar-image-base',
+ ]
+
+ self.init()

+ self.perform_build_test(targets)
+
+
class ContainerSdkTest(CIBaseTest):

"""
diff --git a/testsuite/data/targets.yml b/testsuite/data/targets.yml
index f27ae2d7..a4474829 100644
--- a/testsuite/data/targets.yml
+++ b/testsuite/data/targets.yml
@@ -161,6 +161,10 @@ a: !mux

[MOESSBAUER, Felix]

On Thu, 2026-08-13 at 11:50 +0200, 'Clara Kowalsky' via isar-users
wrote:

As the location of the oobe command can be chosen, please use
/usr/libexec/wsl/oobe.sh instead.

/etc is just for configs and might be noexec mounted.

This makes the source package machine specific. By that, you have to
encode the machine in the package name. Probably use

PN .= "-${MACHINE}" instead of ${DISTRO_ARCH}.

The rest is fine.

Felix

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