Just updated the OBS + Carla (plugin hosting) Ubuntu PPA.
See https://launchpad.net/~falktx/+archive/ubuntu/carla+obs for details

This PPA is basically a repackage of the official OBS one from https://launchpad.net/~obsproject/+archive/ubuntu/obs-studio
See https://github.com/KXStudio/Repository/tree/master/sources/apps/obs-studio for the script and patch file used to generate the custom OBS packages.

@trummerschlunk please ping/forward our CC friends about the update :)