v4l2loopback module isn't installed/installable any more

[geewiz]

Describe the bug

After an update of my workstation, the v4l2loopback module I use for the OBS virtual camera wasn't installed any more. Manual installation as an overlay fails with an error.

What did you expect to happen?

I expected the v4l2loopback module to still be installed and working.

Output of rpm-ostree status

State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: last run 1h 27min ago
Deployments:
  ostree-image-signed:docker://ghcr.io/ublue-os/bluefin-dx-nvidia:39
                   Digest: sha256:3dda14a15fb273e9dcac3b12ca11c1bc4586ebf351ae84d8975d39d389ae8f5d
                  Version: 39.20240414.0 (2024-04-14T22:00:00Z)
          LayeredPackages: 1password 1password-cli alacritty borgmatic langpacks-en lm_sensors material-icons-fonts msmtp
                           pasystray s-nail xautomation xbindkeys xdotool xinput xrdp yubico-piv-tool yubikey-manager

● ostree-image-signed:docker://ghcr.io/ublue-os/bluefin-dx-nvidia:39
                   Digest: sha256:e35490ed0d804f8dcaa3744c567f261eb277c475ac1d257e6e346d8fead33ebb
                  Version: 39.20240414.0 (2024-04-14T21:31:28Z)
          LayeredPackages: 1password 1password-cli alacritty borgmatic langpacks-en lm_sensors material-icons-fonts msmtp
                           pasystray s-nail xautomation xbindkeys xdotool xinput xrdp yubico-piv-tool yubikey-manager

  ostree-image-signed:docker://ghcr.io/ublue-os/bluefin-dx-nvidia:39
                   Digest: sha256:7c84c63189a0eb10a11609074995fce6418f34bdd964bc3df0ae131171e3555e
                  Version: 39.20240314.0 (2024-03-15T17:00:24Z)
          LayeredPackages: 1password 1password-cli alacritty borgmatic langpacks-en lm_sensors material-icons-fonts msmtp
                           pasystray s-nail xautomation xbindkeys xdotool xinput xrandr xrdp yubico-piv-tool
                           yubikey-manager
                   Pinned: yes

Extra information or context

Output of journalctl -t 'rpm-ostree(akmod-v4l2loopback.post)'

[m2Giles]

Currently v4l2loopback does not build for Fedora 38 or Fedora 39. RPM Fusion currently has an updated package in Testing.

F40 has the module

[m2Giles]

See ublue-os/akmods#168

[m2Giles]

#1157