ujust setup-cdemu cannot be installed - akmod-vhba chooses wrong kernel for module build

[chli1]

Describe the bug

I tried to install cdemu through ujust setup-cdemu, but it fails:

Checking out tree fb1e5a6... done
Enabled rpm-md repositories: updates fedora terra-mesa terra terra-source copr:copr.fedorainfracloud.org:rodoma92:kde-cdemu-manager copr:copr.fedorainfracloud.org:rok:cdemu updates-archive
Importing rpm-md... done
rpm-md repo 'updates' (cached); generated: 2025-11-12T00:43:57Z solvables: 9870
rpm-md repo 'fedora' (cached); generated: 2025-10-23T03:37:20Z solvables: 77664
rpm-md repo 'terra-mesa' (cached); generated: 2025-11-05T08:12:11Z solvables: 105
rpm-md repo 'terra' (cached); generated: 2025-11-12T07:02:40Z solvables: 2934
rpm-md repo 'terra-source' (cached); generated: 2025-11-12T07:02:44Z solvables: 483
rpm-md repo 'copr:copr.fedorainfracloud.org:rodoma92:kde-cdemu-manager' (cached); generated: 2025-08-13T12:39:45Z solvables: 8
rpm-md repo 'copr:copr.fedorainfracloud.org:rok:cdemu' (cached); generated: 2025-08-13T13:48:31Z solvables: 23
rpm-md repo 'updates-archive' (cached); generated: 2025-11-12T01:00:41Z solvables: 8289
Resolving dependencies... done
Checking out packages... done
Running systemd-sysusers... done
Running pre scripts... done
Running post scripts... done
error: Running %post for akmod-vhba: bwrap(/bin/sh): Child process exited with status 1; run `journalctl -t 'rpm-ostree(akmod-vhba.post)'` for more information
Failed to start cdemu-daemon.service: Unit cdemu-daemon.service not found.

Output of journalctl -t 'rpm-ostree(akmod-vhba.post)':

rpm-ostree(akmod-vhba.post)[14205]: Building /usr/src/akmods/vhba-kmod-20250329-1.fc43.src.rpm for kernel 6.17.5-300.fc43.x86_64
rpm-ostree(akmod-vhba.post)[14213]: ERROR: Files needed for building modules against kernel
rpm-ostree(akmod-vhba.post)[14213]:  6.17.5-300.fc43.x86_64 could not be found as the following
rpm-ostree(akmod-vhba.post)[14213]:  directories are missing:
rpm-ostree(akmod-vhba.post)[14213]:  /usr/src/kernels/6.17.5-300.fc43.x86_64/
rpm-ostree(akmod-vhba.post)[14213]:  /usr/lib/modules/6.17.5-300.fc43.x86_64/build/

Output of rpm -qa | grep kernel:

kernel-core-6.17.7-ba01.fc43.x86_64
kernel-modules-core-6.17.7-ba01.fc43.x86_64
kernel-modules-6.17.7-ba01.fc43.x86_64
kernel-modules-extra-6.17.7-ba01.fc43.x86_64
kernel-headers-6.17.4-300.fc43.x86_64
kernel-devel-6.17.7-ba01.fc43.x86_64
kernel-tools-libs-6.17.7-ba01.fc43.x86_64
kernel-tools-6.17.7-ba01.fc43.x86_64
kernel-devel-matched-6.17.7-ba01.fc43.x86_64
kernel-6.17.7-ba01.fc43.x86_64
kernel-modules-akmods-6.17.7-ba01.fc43.x86_64
kernel-common-6.17.7-ba01.fc43.x86_64

Interestingly akmod-vhba tries to use a kernel version (6.17.5-300.fc43.x86_64) that isn't even installed, kernel is 6.17.7-ba01.fc43.x86_64 while headers are 6.17.4-300.fc43.x86_64 (notice .4 instead of .5), so I did a sudo find / -type d -name 6.17.5-300.fc43.x86_64:

/sysroot/ostree/repo/tmp/19a7c848-4fcb-4e40-81f8-f5087386cb40/root/usr/lib/modules/6.17.5-300.fc43.x86_64
/sysroot/ostree/repo/extensions/rpmostree/private/commit/usr/lib/modules/6.17.5-300.fc43.x86_64
/sysroot/ostree/deploy/default/deploy/fb1e5a6d4c989550d902387ac90b75a0786ab69ffb8b87635b9f4229f2bdfea7.0/usr/lib/modules/6.17.5-300.fc43.x86_64
/usr/lib/modules/6.17.5-300.fc43.x86_64

Output of ls /usr/lib/modules: 6.17.5-300.fc43.x86_64 6.17.7-ba01.fc43.x86_64

Steps to reproduce the error:

1. Fresh bazzite desktop KDE install
2. ujust update
3. reboot
4. ujust setup-cdemu

On a fresh install using the latest iso (which contains older kernel versions) it works fine until you do a ujust update. After that it always fails.
Before update I had the following directories in /usr/lib/modules: 6.16.12-200.fc42.x86_64 6.16.4-116.bazzite.fc42.x86_64 and this kernels installed rpm -qa | grep kernel:

kernel-modules-core-6.16.4-116.bazzite.fc42.x86_64
kernel-core-6.16.4-116.bazzite.fc42.x86_64
kernel-modules-6.16.4-116.bazzite.fc42.x86_64
kernel-modules-extra-6.16.4-116.bazzite.fc42.x86_64
kernel-headers-6.16.2-200.fc42.x86_64
kernel-devel-6.16.4-116.bazzite.fc42.x86_64
kernel-tools-libs-6.16.4-116.bazzite.fc42.x86_64
kernel-tools-6.16.4-116.bazzite.fc42.x86_64
kernel-devel-matched-6.16.4-116.bazzite.fc42.x86_64
kernel-6.16.4-116.bazzite.fc42.x86_64
kernel-srpm-macros-1.0-25.fc42.noarch

Here vhba-kmod correctly builds using 6.16.4-116.bazzite.fc42.x86_64.

So I don't know on which criteria vhba-kmod selects the kernel version and thus the directories to build its modules.

What did you expect to happen?

ujust setup-cdemu should install cdemu packages without error.

Session Logs

https://paste.centos.org/view/2ba7d91a

Hardware

I don't think its hardware related, as it occurs on different systems, but:

Bare metal: Desktop PC with Ryzen 5700X3d and Radeon RX6700XT
VirtualBox VM

Extra information or context

No response

[antheas]

The provides for vhba was missing. I will have an update later today.

[antheas]

Checkout testing and see if it is fixed there.

[chli1]

I retried testing branch and now it seems to work! Thank you! There was still an error at the very end but application and daemon was running after reboot, so it wasn't that important I guess:

Checking out tree ce05f6f... done
Enabled rpm-md repositories: updates fedora terra-mesa copr:copr.fedorainfracloud.org:rok:cdemu copr:copr.fedorainfracloud.org:rodoma92:kde-cdemu-manager updates-archive
Updating metadata for 'updates'... done
Updating metadata for 'terra-mesa'... done
Updating metadata for 'updates-archive'... done
Importing rpm-md... done
rpm-md repo 'updates'; generated: 2025-11-13T00:46:58Z solvables: 9960
rpm-md repo 'fedora' (cached); generated: 2025-10-23T03:37:20Z solvables: 77664
rpm-md repo 'terra-mesa'; generated: 2025-11-12T18:57:33Z solvables: 105
rpm-md repo 'copr:copr.fedorainfracloud.org:rok:cdemu' (cached); generated: 2025-08-13T13:48:31Z solvables: 23
rpm-md repo 'copr:copr.fedorainfracloud.org:rodoma92:kde-cdemu-manager' (cached); generated: 2025-08-13T12:39:45Z solvables: 8
rpm-md repo 'updates-archive'; generated: 2025-11-13T01:05:28Z solvables: 8410
Resolving dependencies... done
Will download: 4 packages (514,3 KB)
Downloading from 'copr:copr.fedorainfracloud.org:rok:cdemu'... done
Downloading from 'copr:copr.fedorainfracloud.org:rodoma92:kde-cdemu-manager'... done
Importing packages... done
Checking out packages... done
Running systemd-sysusers... done
Running pre scripts... done
Running post scripts... done
Running posttrans scripts... done
Writing rpmdb... done
Writing OSTree commit... done
Staging deployment... done
Pruned images: 0 (layers: 71)
Freed: 21,0 MB (pkgcache branches: 0)
Computing /etc diff to preserve... done
Updating /usr... done
error: Changed directories are not supported yet
Failed to start cdemu-daemon.service: Unit cdemu-daemon.service not found.
CDEmu is installed!

Out of curiosity, what did you change?

[antheas]

I added all the modules to the kernel directly.

But because it did not have a Provides: vhda rpm-ostree tried to install the kmod and failed. I'm slowly updating all modules with provides to fix these issues.